feat(core): add coretest package (#20487)

Co-authored-by: unknown unknown <unknown@unknown>
2024-06-06 00:11:33 +02:00 · 2024-06-06 00:11:33 +02:00 · fe22e9a5da
commit fe22e9a5da
parent 80ba18e39e
53 changed files with 641 additions and 375 deletions
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@ -61,6 +61,15 @@ updates:
    labels:
      - "A:automerge"
      - dependencies
+  - package-ecosystem: gomod
+    directory: "/core/testing"
+    schedule:
+      interval: weekly
+      day: thursday
+      time: "01:30"
+    labels:
+      - "A:automerge"
+      - dependencies
  - package-ecosystem: gomod
    directory: "/depinject"
    schedule:
--- a/.github/pr_labeler.yml
+++ b/.github/pr_labeler.yml
@ -16,6 +16,8 @@
  - store/**/*
 "C:collections":
  - collections/**/*
+"C:core/testing":
+  - core/testing/**/*
 "C:log":
  - log/*
 "C:orm":
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@ -335,6 +335,36 @@ jobs:
          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
        with:
          projectBaseDir: core/
+  test-coretesting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.20"
+          check-latest: true
+          cache: true
+          cache-dependency-path: core/testing/go.sum
+      - uses: technote-space/get-diff-action@v6.1.2
+        id: git_diff
+        with:
+          PATTERNS: |
+            core/testing/**/*.go
+            core/testing/go.mod
+            core/testing/go.sum
+      - name: tests
+        if: env.GIT_DIFF
+        run: |
+          cd core/testing
+          go test -mod=readonly -timeout 30m -coverprofile=coverage.out -covermode=atomic -tags='norace ledger test_ledger_mock' ./...
+      - name: sonarcloud
+        if: ${{ env.GIT_DIFF && !github.event.pull_request.draft && env.SONAR_TOKEN != null }}
+        uses: SonarSource/sonarcloud-github-action@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        with:
+          projectBaseDir: core/testing/

  test-depinject:
    runs-on: ubuntu-latest
--- a/client/v2/go.mod
+++ b/client/v2/go.mod
@ -177,6 +177,7 @@ replace github.com/cosmos/cosmos-sdk => ./../../
 replace (
 	cosmossdk.io/api => ./../../api
 	cosmossdk.io/core => ./../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ./../../depinject
 	cosmossdk.io/log => ./../../log
 	cosmossdk.io/store => ./../../store
--- a/collections/collections_test.go
+++ b/collections/collections_test.go
@ -5,49 +5,16 @@ import (
 	"math"
 	"testing"

-	db "github.com/cosmos/cosmos-db"
 	"github.com/stretchr/testify/require"

 	"cosmossdk.io/core/store"
+	"cosmossdk.io/core/testing"
 )

-type testStore struct {
-	db db.DB
-}
-
-func (t testStore) OpenKVStore(ctx context.Context) store.KVStore {
-	return t
-}
-
-func (t testStore) Get(key []byte) ([]byte, error) {
-	return t.db.Get(key)
-}
-
-func (t testStore) Has(key []byte) (bool, error) {
-	return t.db.Has(key)
-}
-
-func (t testStore) Set(key, value []byte) error {
-	return t.db.Set(key, value)
-}
-
-func (t testStore) Delete(key []byte) error {
-	return t.db.Delete(key)
-}
-
-func (t testStore) Iterator(start, end []byte) (store.Iterator, error) {
-	return t.db.Iterator(start, end)
-}
-
-func (t testStore) ReverseIterator(start, end []byte) (store.Iterator, error) {
-	return t.db.ReverseIterator(start, end)
-}
-
-var _ store.KVStore = testStore{}
-
 func deps() (store.KVStoreService, context.Context) {
-	kv := db.NewMemDB()
-	return &testStore{kv}, context.Background()
+	ctx := coretesting.Context()
+	kv := coretesting.KVStoreService(ctx, "test")
+	return kv, ctx
 }

 func TestPrefix(t *testing.T) {
--- a/collections/colltest/store.go
+++ b/collections/colltest/store.go
@ -1,61 +0,0 @@
-package colltest
-
-import (
-	"context"
-
-	db "github.com/cosmos/cosmos-db"
-
-	"cosmossdk.io/core/store"
-)
-
-type contextStoreKey struct{}
-
-// MockStore returns a mock store.KVStoreService and a mock context.Context.
-// They can be used to test collections. The StoreService.NewStoreContext
-// can be used to instantiate a new empty KVStore.
-func MockStore() (*StoreService, context.Context) {
-	kv := db.NewMemDB()
-	ctx := context.WithValue(context.Background(), contextStoreKey{}, &testStore{kv})
-	return &StoreService{}, ctx
-}
-
-type StoreService struct{}
-
-func (s StoreService) OpenKVStore(ctx context.Context) store.KVStore {
-	return ctx.Value(contextStoreKey{}).(store.KVStore)
-}
-
-func (s StoreService) NewStoreContext() context.Context {
-	kv := db.NewMemDB()
-	return context.WithValue(context.Background(), contextStoreKey{}, &testStore{kv})
-}
-
-type testStore struct {
-	db db.DB
-}
-
-func (t testStore) Get(key []byte) ([]byte, error) {
-	return t.db.Get(key)
-}
-
-func (t testStore) Has(key []byte) (bool, error) {
-	return t.db.Has(key)
-}
-
-func (t testStore) Set(key, value []byte) error {
-	return t.db.Set(key, value)
-}
-
-func (t testStore) Delete(key []byte) error {
-	return t.db.Delete(key)
-}
-
-func (t testStore) Iterator(start, end []byte) (store.Iterator, error) {
-	return t.db.Iterator(start, end)
-}
-
-func (t testStore) ReverseIterator(start, end []byte) (store.Iterator, error) {
-	return t.db.ReverseIterator(start, end)
-}
-
-var _ store.KVStore = testStore{}
--- a/collections/go.mod
+++ b/collections/go.mod
@ -3,44 +3,19 @@ module cosmossdk.io/collections
 go 1.21

 require (
-	cosmossdk.io/core v0.11.0
-	github.com/cosmos/cosmos-db v1.0.2
+	cosmossdk.io/core v0.12.0
+	cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000
 	github.com/stretchr/testify v1.9.0
 	pgregory.net/rapid v1.1.0
 )

 require (
-	cosmossdk.io/api v0.7.5 // indirect
-	cosmossdk.io/depinject v1.0.0-alpha.4 // indirect
-	github.com/DataDog/zstd v1.5.5 // indirect
-	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/cockroachdb/errors v1.11.1 // indirect
-	github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b // indirect
-	github.com/cockroachdb/pebble v1.1.0 // indirect
-	github.com/cockroachdb/redact v1.1.5 // indirect
-	github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06 // indirect
-	github.com/cosmos/cosmos-proto v1.0.0-beta.5 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/fsnotify/fsnotify v1.6.0 // indirect
-	github.com/getsentry/sentry-go v0.27.0 // indirect
-	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/btree v1.1.2 // indirect
-	github.com/klauspost/compress v1.17.7 // indirect
-	github.com/kr/pretty v0.3.1 // indirect
-	github.com/kr/text v0.2.0 // indirect
-	github.com/linxGnu/grocksdb v1.8.14 // indirect
-	github.com/onsi/gomega v1.20.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/cosmos/gogoproto v1.4.12 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_golang v1.19.1 // indirect
-	github.com/prometheus/client_model v0.6.1 // indirect
-	github.com/prometheus/common v0.54.0 // indirect
-	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/rogpeppe/go-internal v1.12.0 // indirect
-	github.com/spf13/cast v1.6.0 // indirect
-	github.com/syndtr/goleveldb v1.0.1-0.20220721030215-126854af5e6d // indirect
+	github.com/tidwall/btree v1.7.0 // indirect
 	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect
 	golang.org/x/net v0.25.0 // indirect
 	golang.org/x/sys v0.20.0 // indirect
@ -50,3 +25,8 @@ require (
 	google.golang.org/protobuf v1.34.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
+
+replace (
+	cosmossdk.io/core => ../core
+	cosmossdk.io/core/testing => ../core/testing
+)
--- a/collections/go.sum
+++ b/collections/go.sum
@ -1,216 +1,39 @@
-cosmossdk.io/api v0.7.5 h1:eMPTReoNmGUm8DeiQL9DyM8sYDjEhWzL1+nLbI9DqtQ=
-cosmossdk.io/api v0.7.5/go.mod h1:IcxpYS5fMemZGqyYtErK7OqvdM0C8kdW3dq8Q/XIG38=
-cosmossdk.io/core v0.11.0 h1:vtIafqUi+1ZNAE/oxLOQQ7Oek2n4S48SWLG8h/+wdbo=
-cosmossdk.io/core v0.11.0/go.mod h1:LaTtayWBSoacF5xNzoF8tmLhehqlA9z1SWiPuNC6X1w=
-cosmossdk.io/depinject v1.0.0-alpha.4 h1:PLNp8ZYAMPTUKyG9IK2hsbciDWqna2z1Wsl98okJopc=
-cosmossdk.io/depinject v1.0.0-alpha.4/go.mod h1:HeDk7IkR5ckZ3lMGs/o91AVUc7E596vMaOmslGFM3yU=
-github.com/DataDog/zstd v1.5.5 h1:oWf5W7GtOLgp6bciQYDmhHHjdhYkALu6S/5Ni9ZgSvQ=
-github.com/DataDog/zstd v1.5.5/go.mod h1:g4AWEaM3yOg3HYfnJ3YIawPnVdXJh9QME85blwSAmyw=
-github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
-github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
-github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
-github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
-github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
-github.com/cockroachdb/datadriven v1.0.3-0.20230413201302-be42291fc80f h1:otljaYPt5hWxV3MUfO5dFPFiOXg9CyG5/kCfayTqsJ4=
-github.com/cockroachdb/datadriven v1.0.3-0.20230413201302-be42291fc80f/go.mod h1:a9RdTaap04u637JoCzcUoIcDmvwSUtcUFtT/C3kJlTU=
-github.com/cockroachdb/errors v1.11.1 h1:xSEW75zKaKCWzR3OfxXUxgrk/NtT4G1MiOv5lWZazG8=
-github.com/cockroachdb/errors v1.11.1/go.mod h1:8MUxA3Gi6b25tYlFEBGLf+D8aISL+M4MIpiWMSNRfxw=
-github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b h1:r6VH0faHjZeQy818SGhaone5OnYfxFR/+AzdY3sf5aE=
-github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b/go.mod h1:Vz9DsVWQQhf3vs21MhPMZpMGSht7O/2vFW2xusFUVOs=
-github.com/cockroachdb/pebble v1.1.0 h1:pcFh8CdCIt2kmEpK0OIatq67Ln9uGDYY3d5XnE0LJG4=
-github.com/cockroachdb/pebble v1.1.0/go.mod h1:sEHm5NOXxyiAoKWhoFxT8xMgd/f3RA6qUqQ1BXKrh2E=
-github.com/cockroachdb/redact v1.1.5 h1:u1PMllDkdFfPWaNGMyLD1+so+aq3uUItthCFqzwPJ30=
-github.com/cockroachdb/redact v1.1.5/go.mod h1:BVNblN9mBWFyMyqK1k3AAiSxhvhfK2oOZZ2lK+dpvRg=
-github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06 h1:zuQyyAKVxetITBuuhv3BI9cMrmStnpT18zmgmTxunpo=
-github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06/go.mod h1:7nc4anLGjupUW/PeY5qiNYsdNXj7zopG+eqsS7To5IQ=
-github.com/cosmos/cosmos-db v1.0.2 h1:hwMjozuY1OlJs/uh6vddqnk9j7VamLv+0DBlbEXbAKs=
-github.com/cosmos/cosmos-db v1.0.2/go.mod h1:Z8IXcFJ9PqKK6BIsVOB3QXtkKoqUOp1vRvPT39kOXEA=
-github.com/cosmos/cosmos-proto v1.0.0-beta.5 h1:eNcayDLpip+zVLRLYafhzLvQlSmyab+RC5W7ZfmxJLA=
-github.com/cosmos/cosmos-proto v1.0.0-beta.5/go.mod h1:hQGLpiIUloJBMdQMMWb/4wRApmI9hjHH05nefC0Ojec=
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
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 google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
-gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gotest.tools/v3 v3.5.1 h1:EENdUnS3pdur5nybKYIh2Vfgc8IUNBjxDPSjtiJcOzU=
-gotest.tools/v3 v3.5.1/go.mod h1:isy3WKz7GK6uNw/sbHzfKBLvlvXwUyV06n6brMxxopU=
 pgregory.net/rapid v1.1.0 h1:CMa0sjHSru3puNx+J0MIAuiiEV4N0qj8/cMWGBBCsjw=
 pgregory.net/rapid v1.1.0/go.mod h1:PY5XlDGj0+V1FCq0o192FdRhpKHGTRIWBgqjDBTrq04=
--- a/collections/indexed_map_test.go
+++ b/collections/indexed_map_test.go
@ -8,6 +8,7 @@ import (
 	"cosmossdk.io/collections"
 	"cosmossdk.io/collections/colltest"
 	"cosmossdk.io/collections/indexes"
+	"cosmossdk.io/core/testing"
 )

 type company struct {
@ -44,7 +45,9 @@ func newTestIndexedMap(schema *collections.SchemaBuilder) *collections.IndexedMa
 }

 func TestIndexedMap(t *testing.T) {
-	sk, ctx := colltest.MockStore()
+	ctx := coretesting.Context()
+	sk := coretesting.KVStoreService(ctx, "test")
+
 	schema := collections.NewSchemaBuilder(sk)

 	im := newTestIndexedMap(schema)
@ -122,7 +125,7 @@ func newInferIndex(schema *collections.SchemaBuilder) *inferIndex {
 }

 func TestIndexedMapInfer(t *testing.T) {
-	sk, _ := colltest.MockStore()
+	sk := coretesting.KVStoreService(coretesting.Context(), "test")
 	schema := collections.NewSchemaBuilder(sk)

 	_, err := collections.NewIndexedMapSafe(schema, collections.NewPrefix(0), "im", collections.StringKey, colltest.MockValueCodec[company](), newInferIndex(schema))
--- a/collections/indexes/indexes_test.go
+++ b/collections/indexes/indexes_test.go
@ -3,50 +3,14 @@ package indexes
 import (
 	"context"

-	db "github.com/cosmos/cosmos-db"
-
 	"cosmossdk.io/core/store"
+	"cosmossdk.io/core/testing"
 )

-// TODO remove this when we add testStore to core/store.
-
-type testStore struct {
-	db db.DB
-}
-
-func (t testStore) OpenKVStore(ctx context.Context) store.KVStore {
-	return t
-}
-
-func (t testStore) Get(key []byte) ([]byte, error) {
-	return t.db.Get(key)
-}
-
-func (t testStore) Has(key []byte) (bool, error) {
-	return t.db.Has(key)
-}
-
-func (t testStore) Set(key, value []byte) error {
-	return t.db.Set(key, value)
-}
-
-func (t testStore) Delete(key []byte) error {
-	return t.db.Delete(key)
-}
-
-func (t testStore) Iterator(start, end []byte) (store.Iterator, error) {
-	return t.db.Iterator(start, end)
-}
-
-func (t testStore) ReverseIterator(start, end []byte) (store.Iterator, error) {
-	return t.db.ReverseIterator(start, end)
-}
-
-var _ store.KVStore = testStore{}
-
 func deps() (store.KVStoreService, context.Context) {
-	kv := db.NewMemDB()
-	return &testStore{kv}, context.Background()
+	ctx := coretesting.Context()
+	kv := coretesting.KVStoreService(ctx, "test")
+	return kv, ctx
 }

 type company struct {
--- a/collections/lookup_map_test.go
+++ b/collections/lookup_map_test.go
@ -6,11 +6,12 @@ import (
 	"github.com/stretchr/testify/require"

 	"cosmossdk.io/collections"
-	"cosmossdk.io/collections/colltest"
+	"cosmossdk.io/core/testing"
 )

 func TestLookupMap(t *testing.T) {
-	sk, ctx := colltest.MockStore()
+	ctx := coretesting.Context()
+	sk := coretesting.KVStoreService(ctx, "test")
 	schema := collections.NewSchemaBuilder(sk)

 	lm := collections.NewLookupMap(schema, collections.NewPrefix("hi"), "lm", collections.Uint64Key, collections.Uint64Value)
--- a/collections/triple_test.go
+++ b/collections/triple_test.go
@ -7,6 +7,7 @@ import (

 	"cosmossdk.io/collections"
 	"cosmossdk.io/collections/colltest"
+	"cosmossdk.io/core/testing"
 )

 func TestTriple(t *testing.T) {
@ -18,7 +19,8 @@ func TestTriple(t *testing.T) {
 }

 func TestTripleRange(t *testing.T) {
-	sk, ctx := colltest.MockStore()
+	ctx := coretesting.Context()
+	sk := coretesting.KVStoreService(ctx, "test")
 	schema := collections.NewSchemaBuilder(sk)
 	// this is a key composed of 3 parts: uint64, string, []byte
 	kc := collections.TripleKeyCodec(collections.Uint64Key, collections.StringKey, collections.BytesKey)
--- a/core/testing/CHANGELOG.md
+++ b/core/testing/CHANGELOG.md
@ -0,0 +1,38 @@
+<!--
+Guiding Principles:
+
+Changelogs are for humans, not machines.
+There should be an entry for every single version.
+The same types of changes should be grouped.
+Versions and sections should be linkable.
+The latest version comes first.
+The release date of each version is displayed.
+Mention whether you follow Semantic Versioning.
+
+Usage:
+
+Change log entries are to be added to the Unreleased section under the
+appropriate stanza (see below). Each entry should ideally include a tag and
+the Github issue reference in the following format:
+
+* (<tag>) \#<issue-number> message
+
+The issue numbers will later be link-ified during the release process so you do
+not have to worry about including a link manually, but you can if you wish.
+
+Types of changes (Stanzas):
+
+"Features" for new features.
+"Improvements" for changes in existing functionality.
+"Deprecated" for soon-to-be removed features.
+"Bug Fixes" for any bug fixes.
+"Client Breaking" for breaking Protobuf, gRPC and REST routes used by end-users.
+"CLI Breaking" for breaking CLI commands.
+"API Breaking" for breaking exported APIs used by developers building on SDK.
+Ref: https://keepachangelog.com/en/1.0.0/
+-->
+
+# Changelog
+
+## [Unreleased]
+
--- a/core/testing/context.go
+++ b/core/testing/context.go
@ -0,0 +1,31 @@
+package coretesting
+
+import (
+	"context"
+
+	"cosmossdk.io/core/store"
+)
+
+type dummyKey struct{}
+
+func Context() context.Context {
+	dummy := &dummyCtx{
+		stores: map[string]store.KVStore{},
+	}
+
+	ctx := context.WithValue(context.Background(), dummyKey{}, dummy)
+	return ctx
+}
+
+type dummyCtx struct {
+	stores map[string]store.KVStore
+}
+
+func unwrap(ctx context.Context) *dummyCtx {
+	dummy := ctx.Value(dummyKey{})
+	if dummy == nil {
+		panic("invalid ctx without dummy")
+	}
+
+	return dummy.(*dummyCtx)
+}
--- a/core/testing/go.mod
+++ b/core/testing/go.mod
@ -0,0 +1,18 @@
+module cosmossdk.io/core/testing
+
+go 1.20
+
+replace cosmossdk.io/core => ../
+
+require (
+	cosmossdk.io/core v0.12.0
+	github.com/stretchr/testify v1.9.0
+	github.com/tidwall/btree v1.7.0
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
--- a/core/testing/go.sum
+++ b/core/testing/go.sum
@ -0,0 +1,17 @@
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/tidwall/btree v1.7.0 h1:L1fkJH/AuEh5zBnnBbmTwQ5Lt+bRJ5A8EWecslvo9iI=
+github.com/tidwall/btree v1.7.0/go.mod h1:twD9XRA5jj9VUQGELzDO4HPQTNJsoWWfYEL+EUQ2cKY=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/core/testing/memdb.go
+++ b/core/testing/memdb.go
@ -0,0 +1,254 @@
+package coretesting
+
+import (
+	"bytes"
+	"errors"
+
+	"github.com/tidwall/btree"
+
+	"cosmossdk.io/core/store"
+)
+
+const (
+	// The approximate number of items and children per B-tree node. Tuned with benchmarks.
+	// copied from memdb.
+	bTreeDegree = 32
+)
+
+var errKeyEmpty = errors.New("key cannot be empty")
+
+var _ store.KVStore = (*memDB)(nil)
+
+// memDB a lightweight memory db
+type memDB struct {
+	tree *btree.BTreeG[item]
+}
+
+// newMemDB creates a wrapper around `btree.BTreeG`.
+func newMemDB() memDB {
+	return memDB{
+		tree: btree.NewBTreeGOptions(byKeys, btree.Options{
+			Degree:  bTreeDegree,
+			NoLocks: true,
+		}),
+	}
+}
+
+// set adds a new key-value pair to the change set's tree.
+func (bt memDB) set(key, value []byte) {
+	bt.tree.Set(newItem(key, value))
+}
+
+// get retrieves the value associated with the given key from the memDB's tree.
+func (bt memDB) get(key []byte) (value []byte, found bool) {
+	it, found := bt.tree.Get(item{key: key})
+	return it.value, found
+}
+
+// delete removes the value associated with the given key from the change set.
+// If the key does not exist in the change set, this method does nothing.
+func (bt memDB) delete(key []byte) {
+	bt.tree.Delete(item{key: key})
+}
+
+// iterator returns a new iterator over the key-value pairs in the memDB
+// that have keys greater than or equal to the start key and less than the end key.
+func (bt memDB) iterator(start, end []byte) (store.Iterator, error) {
+	if (start != nil && len(start) == 0) || (end != nil && len(end) == 0) {
+		return nil, errKeyEmpty
+	}
+	return newMemIterator(start, end, bt.tree, true), nil
+}
+
+// reverseIterator returns a new iterator that iterates over the key-value pairs in reverse order
+// within the specified range [start, end) in the memDB's tree.
+// If start or end is an empty byte slice, it returns an error indicating that the key is empty.
+func (bt memDB) reverseIterator(start, end []byte) (store.Iterator, error) {
+	if (start != nil && len(start) == 0) || (end != nil && len(end) == 0) {
+		return nil, errKeyEmpty
+	}
+	return newMemIterator(start, end, bt.tree, false), nil
+}
+
+// KV impl
+
+func (bt memDB) Get(key []byte) ([]byte, error) {
+	value, _ := bt.get(key)
+	return value, nil
+}
+
+func (bt memDB) Has(key []byte) (bool, error) {
+	_, found := bt.get(key)
+	return found, nil
+}
+
+func (bt memDB) Set(key, value []byte) error {
+	bt.set(key, value)
+	return nil
+}
+
+func (bt memDB) Delete(key []byte) error {
+	bt.delete(key)
+	return nil
+}
+
+func (bt memDB) Iterator(start, end []byte) (store.Iterator, error) {
+	return bt.iterator(start, end)
+}
+
+func (bt memDB) ReverseIterator(start, end []byte) (store.Iterator, error) {
+	return bt.reverseIterator(start, end)
+}
+
+// item is a btree item with byte slices as keys and values
+type item struct {
+	key   []byte
+	value []byte
+}
+
+// byKeys compares the items by key
+func byKeys(a, b item) bool {
+	return bytes.Compare(a.key, b.key) == -1
+}
+
+// newItem creates a new pair item.
+func newItem(key, value []byte) item {
+	return item{key: key, value: value}
+}
+
+// memIterator iterates over iterKVCache items.
+// if value is nil, means it was deleted.
+// Implements Iterator.
+type memIterator struct {
+	iter btree.IterG[item]
+
+	start     []byte
+	end       []byte
+	ascending bool
+	valid     bool
+}
+
+// newMemIterator creates a new memory iterator for a given range of keys in a B-tree.
+// The iterator starts at the specified start key and ends at the specified end key.
+// The `tree` parameter is the B-tree to iterate over.
+// The `ascending` parameter determines the direction of iteration.
+// If `ascending` is true, the iterator will iterate in ascending order.
+// If `ascending` is false, the iterator will iterate in descending order.
+// The returned iterator is positioned at the first key that is greater than or equal to the start key.
+// If the start key is nil, the iterator is positioned at the first key in the B-tree.
+// If the end key is nil, the iterator is positioned at the last key in the B-tree.
+// The iterator is inclusive of the start key and exclusive of the end key.
+// The `valid` field of the iterator indicates whether the iterator is positioned at a valid key.
+// The `start` and `end` fields of the iterator store the start and end keys respectively.
+func newMemIterator(start, end []byte, tree *btree.BTreeG[item], ascending bool) *memIterator {
+	iter := tree.Iter()
+	var valid bool
+	if ascending {
+		if start != nil {
+			valid = iter.Seek(newItem(start, nil))
+		} else {
+			valid = iter.First()
+		}
+	} else {
+		if end != nil {
+			valid = iter.Seek(newItem(end, nil))
+			if !valid {
+				valid = iter.Last()
+			} else {
+				// end is exclusive
+				valid = iter.Prev()
+			}
+		} else {
+			valid = iter.Last()
+		}
+	}
+
+	mi := &memIterator{
+		iter:      iter,
+		start:     start,
+		end:       end,
+		ascending: ascending,
+		valid:     valid,
+	}
+
+	if mi.valid {
+		mi.valid = mi.keyInRange(mi.Key())
+	}
+
+	return mi
+}
+
+// Domain returns the start and end keys of the iterator's domain.
+func (mi *memIterator) Domain() (start, end []byte) {
+	return mi.start, mi.end
+}
+
+// Close releases any resources held by the iterator.
+func (mi *memIterator) Close() error {
+	mi.iter.Release()
+	return nil
+}
+
+var errInvalidIterator = errors.New("invalid iterator")
+
+// Error returns the error state of the iterator.
+// If the iterator is not valid, it returns the errInvalidIterator error.
+// Otherwise, it returns nil.
+func (mi *memIterator) Error() error {
+	if !mi.Valid() {
+		return errInvalidIterator
+	}
+	return nil
+}
+
+// Valid returns whether the iterator is currently pointing to a valid entry.
+// It returns true if the iterator is valid, and false otherwise.
+func (mi *memIterator) Valid() bool {
+	return mi.valid
+}
+
+// Next advances the iterator to the next key-value pair.
+// If the iterator is in ascending order, it moves to the next key-value pair.
+// If the iterator is in descending order, it moves to the previous key-value pair.
+// It also checks if the new key-value pair is within the specified range.
+func (mi *memIterator) Next() {
+	mi.assertValid()
+
+	if mi.ascending {
+		mi.valid = mi.iter.Next()
+	} else {
+		mi.valid = mi.iter.Prev()
+	}
+
+	if mi.valid {
+		mi.valid = mi.keyInRange(mi.Key())
+	}
+}
+
+func (mi *memIterator) keyInRange(key []byte) bool {
+	if mi.ascending && mi.end != nil && bytes.Compare(key, mi.end) >= 0 {
+		return false
+	}
+	if !mi.ascending && mi.start != nil && bytes.Compare(key, mi.start) < 0 {
+		return false
+	}
+	return true
+}
+
+// Key returns the key of the current item in the iterator.
+func (mi *memIterator) Key() []byte {
+	return mi.iter.Item().key
+}
+
+// Value returns the value of the current item in the iterator.
+func (mi *memIterator) Value() []byte {
+	return mi.iter.Item().value
+}
+
+// assertValid checks if the memIterator is in a valid state.
+// If there is an error, it panics with the error message.
+func (mi *memIterator) assertValid() {
+	if err := mi.Error(); err != nil {
+		panic(err)
+	}
+}
--- a/core/testing/memdb_test.go
+++ b/core/testing/memdb_test.go
@ -0,0 +1,59 @@
+package coretesting
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"cosmossdk.io/core/store"
+)
+
+func TestMemDB(t *testing.T) {
+	var db store.KVStore = newMemDB()
+
+	key, value := []byte("key"), []byte("value")
+	require.NoError(t, db.Set(key, value))
+	val, err := db.Get(key)
+	require.NoError(t, err)
+	require.Equal(t, value, val)
+	require.NoError(t, db.Delete(key))
+	has, err := db.Has(key)
+	require.NoError(t, err)
+	require.False(t, has)
+
+	// test iter
+	makeKey := func(i int) []byte {
+		return []byte(fmt.Sprintf("key_%d", i))
+	}
+	for i := 0; i < 10; i++ {
+		require.NoError(t, db.Set(makeKey(i), makeKey(i)))
+	}
+
+	iter, err := db.Iterator(nil, nil)
+	require.NoError(t, err)
+	key = iter.Key()
+	value = iter.Value()
+	require.Equal(t, makeKey(0), key)
+	require.Equal(t, makeKey(0), value)
+	require.NoError(t, iter.Error())
+	iter.Next()
+	key, value = iter.Key(), iter.Value()
+	require.Equal(t, makeKey(1), key)
+	require.Equal(t, makeKey(1), value)
+	require.NoError(t, iter.Close())
+
+	// test reverse iter
+	iter, err = db.ReverseIterator(nil, nil)
+	require.NoError(t, err)
+	key = iter.Key()
+	value = iter.Value()
+	require.Equal(t, makeKey(9), key)
+	require.Equal(t, makeKey(9), value)
+	require.NoError(t, iter.Error())
+	iter.Next()
+	key, value = iter.Key(), iter.Value()
+	require.Equal(t, makeKey(8), key)
+	require.Equal(t, makeKey(8), value)
+	require.NoError(t, iter.Close())
+}
--- a/core/testing/services_test.go
+++ b/core/testing/services_test.go
@ -0,0 +1,35 @@
+package coretesting
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestKVStoreService(t *testing.T) {
+	ctx := Context()
+	svc1 := KVStoreService(ctx, "bank")
+
+	// must panic
+	t.Run("must panic on invalid ctx", func(t *testing.T) {
+		require.Panics(t, func() {
+			svc1.OpenKVStore(context.Background())
+		})
+	})
+
+	t.Run("success", func(t *testing.T) {
+		kv := svc1.OpenKVStore(ctx)
+		require.NoError(t, kv.Set([]byte("key"), []byte("value")))
+
+		value, err := kv.Get([]byte("key"))
+		require.NoError(t, err)
+		require.Equal(t, []byte("value"), value)
+	})
+
+	t.Run("contains module name", func(t *testing.T) {
+		KVStoreService(ctx, "auth")
+		_, ok := unwrap(ctx).stores["auth"]
+		require.True(t, ok)
+	})
+}
--- a/core/testing/sonar-project.properties
+++ b/core/testing/sonar-project.properties
@ -0,0 +1,16 @@
+sonar.projectKey=cosmos-sdk-core-testing
+sonar.organization=cosmos
+
+sonar.projectName=Cosmos SDK - Core Testing
+sonar.project.monorepo.enabled=true
+
+sonar.sources=.
+sonar.exclusions=**/*_test.go,**/*.pb.go,**/*.pulsar.go,**/*.pb.gw.go
+sonar.coverage.exclusions=**/*_test.go,**/testutil/**,**/*.pb.go,**/*.pb.gw.go,**/*.pulsar.go,test_helpers.go,docs/**
+sonar.tests=.
+sonar.test.inclusions=**/*_test.go
+sonar.go.coverage.reportPaths=coverage.out
+
+sonar.sourceEncoding=UTF-8
+sonar.scm.provider=git
+sonar.scm.forceReloadAll=true
--- a/core/testing/store.go
+++ b/core/testing/store.go
@ -0,0 +1,27 @@
+package coretesting
+
+import (
+	"context"
+	"fmt"
+
+	"cosmossdk.io/core/store"
+)
+
+func KVStoreService(ctx context.Context, moduleName string) store.KVStoreService {
+	unwrap(ctx).stores[moduleName] = newMemDB()
+	return kvStoreService{
+		moduleName: moduleName,
+	}
+}
+
+type kvStoreService struct {
+	moduleName string
+}
+
+func (k kvStoreService) OpenKVStore(ctx context.Context) store.KVStore {
+	kv, ok := unwrap(ctx).stores[k.moduleName]
+	if !ok {
+		panic(fmt.Sprintf("KVStoreService %s not found", k.moduleName))
+	}
+	return kv
+}
--- a/go.mod
+++ b/go.mod
@ -6,6 +6,7 @@ require (
 	cosmossdk.io/api v0.7.5
 	cosmossdk.io/collections v0.4.0
 	cosmossdk.io/core v0.12.1-0.20231114100755-569e3ff6a0d7
+	cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000
 	cosmossdk.io/depinject v1.0.0-alpha.4
 	cosmossdk.io/errors v1.0.1
 	cosmossdk.io/log v1.3.1
@ -186,6 +187,7 @@ replace (
 	cosmossdk.io/api => ./api
 	cosmossdk.io/collections => ./collections
 	cosmossdk.io/core => ./core
+	cosmossdk.io/core/testing => ./core/testing
 	cosmossdk.io/depinject => ./depinject
 	cosmossdk.io/log => ./log
 	cosmossdk.io/store => ./store
--- a/go.work.example
+++ b/go.work.example
@ -6,6 +6,7 @@ use (
 	./client/v2
 	./collections
 	./core
+	./core/testing
 	./depinject
 	./errors
 	./log
--- a/server/v2/cometbft/go.mod
+++ b/server/v2/cometbft/go.mod
@ -5,6 +5,7 @@ go 1.22.2
 replace (
 	cosmossdk.io/api => ../../../api
 	cosmossdk.io/core => ../../../core
+	cosmossdk.io/core/testing => ../../../core/testing
 	cosmossdk.io/depinject => ../../../depinject
 	cosmossdk.io/server/v2 => ../
 	cosmossdk.io/server/v2/appmanager => ../appmanager
--- a/simapp/go.mod
+++ b/simapp/go.mod
@ -58,6 +58,7 @@ require (
 	cloud.google.com/go/compute/metadata v0.3.0 // indirect
 	cloud.google.com/go/iam v1.1.7 // indirect
 	cloud.google.com/go/storage v1.40.0 // indirect
+	cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
 	cosmossdk.io/errors v1.0.1 // indirect
 	filippo.io/edwards25519 v1.1.0 // indirect
 	github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 // indirect
@ -241,6 +242,7 @@ replace (
 	cosmossdk.io/client/v2 => ../client/v2
 	cosmossdk.io/collections => ../collections
 	cosmossdk.io/core => ../core
+	cosmossdk.io/core/testing => ../core/testing
 	cosmossdk.io/depinject => ../depinject
 	cosmossdk.io/log => ../log
 	cosmossdk.io/store => ../store
--- a/tests/go.mod
+++ b/tests/go.mod
@ -63,6 +63,7 @@ require (
 	cloud.google.com/go/iam v1.1.7 // indirect
 	cloud.google.com/go/storage v1.40.0 // indirect
 	cosmossdk.io/client/v2 v2.0.0-20230630094428-02b760776860 // indirect
+	cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
 	cosmossdk.io/x/circuit v0.0.0-20230613133644-0a778132a60f // indirect
 	cosmossdk.io/x/epochs v0.0.0-00010101000000-000000000000 // indirect
 	filippo.io/edwards25519 v1.1.0 // indirect
@ -236,6 +237,7 @@ replace (
 	cosmossdk.io/client/v2 => ../client/v2
 	cosmossdk.io/collections => ../collections
 	cosmossdk.io/core => ../core
+	cosmossdk.io/core/testing => ../core/testing
 	cosmossdk.io/depinject => ../depinject
 	cosmossdk.io/log => ../log
 	cosmossdk.io/x/accounts => ../x/accounts
--- a/types/simulation/collections_test.go
+++ b/types/simulation/collections_test.go
@ -6,13 +6,14 @@ import (
 	"github.com/stretchr/testify/require"

 	"cosmossdk.io/collections"
-	"cosmossdk.io/collections/colltest"
+	"cosmossdk.io/core/testing"

 	"github.com/cosmos/cosmos-sdk/types/kv"
 )

 func TestNewStoreDecoderFuncFromCollectionsSchema(t *testing.T) {
-	store, _ := colltest.MockStore()
+	ctx := coretesting.Context()
+	store := coretesting.KVStoreService(ctx, "test")
 	sb := collections.NewSchemaBuilder(store)

 	prefixM1 := collections.NewPrefix("map_1")
--- a/x/accounts/accountstd/test_util.go
+++ b/x/accounts/accountstd/test_util.go
@ -3,8 +3,8 @@ package accountstd
 import (
 	"context"

-	"cosmossdk.io/collections/colltest"
 	"cosmossdk.io/core/store"
+	"cosmossdk.io/core/testing"
 	"cosmossdk.io/x/accounts/internal/implementation"

 	sdk "github.com/cosmos/cosmos-sdk/types"
@ -19,7 +19,8 @@ func NewMockContext(
 	moduleExecUntyped implementation.ModuleExecUntypedFunc,
 	moduleQuery implementation.ModuleQueryFunc,
 ) (context.Context, store.KVStoreService) {
-	ss, ctx := colltest.MockStore()
+	ctx := coretesting.Context()
+	ss := coretesting.KVStoreService(ctx, "test")

 	return implementation.MakeAccountContext(
 		ctx, ss, accNumber, accountAddr, sender, funds, moduleExec, moduleExecUntyped, moduleQuery,
--- a/x/accounts/defaults/lockup/go.mod
+++ b/x/accounts/defaults/lockup/go.mod
@ -17,6 +17,7 @@ require cosmossdk.io/x/consensus v0.0.0-00010101000000-000000000000 // indirect

 require (
 	buf.build/gen/go/cometbft/cometbft/protocolbuffers/go v1.34.1-20240312114316-c0d3497e35d6.1 // indirect
+	cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
 	cosmossdk.io/depinject v1.0.0-alpha.4 // indirect
 	github.com/cometbft/cometbft/api v1.0.0-alpha.2.0.20240530055211-ae27f7eb3c08 // indirect
 	github.com/cosmos/crypto v0.0.0-20240309083813-82ed2537802e // indirect
@ -172,6 +173,7 @@ replace (
 	cosmossdk.io/api => ../../../../api
 	cosmossdk.io/collections => ../../../../collections // TODO tag new collections ASAP
 	cosmossdk.io/core => ../../../../core
+	cosmossdk.io/core/testing => ../../../../core/testing
 	cosmossdk.io/depinject => ../../../../depinject
 	cosmossdk.io/log => ../../../../log
 	cosmossdk.io/x/accounts => ../../.
--- a/x/accounts/genesis_test.go
+++ b/x/accounts/genesis_test.go
@ -6,26 +6,26 @@ import (
 	"github.com/cosmos/gogoproto/types"
 	"github.com/stretchr/testify/require"

-	"cosmossdk.io/collections/colltest"
 	"cosmossdk.io/x/accounts/internal/implementation"
 	v1 "cosmossdk.io/x/accounts/v1"
 )

 func TestGenesis(t *testing.T) {
+	const testAccountType = "test"
 	k, ctx := newKeeper(t, func(deps implementation.Dependencies) (string, implementation.Account, error) {
 		acc, err := NewTestAccount(deps)
-		return "test", acc, err
+		return testAccountType, acc, err
 	})
 	// we init two accounts of the same type

 	// we set counter to 10
-	_, addr1, err := k.Init(ctx, "test", []byte("sender"), &types.Empty{}, nil)
+	_, addr1, err := k.Init(ctx, testAccountType, []byte("sender"), &types.Empty{}, nil)
 	require.NoError(t, err)
 	_, err = k.Execute(ctx, addr1, []byte("sender"), &types.UInt64Value{Value: 10}, nil)
 	require.NoError(t, err)

 	// we set counter to 20
-	_, addr2, err := k.Init(ctx, "test", []byte("sender"), &types.Empty{}, nil)
+	_, addr2, err := k.Init(ctx, testAccountType, []byte("sender"), &types.Empty{}, nil)
 	require.NoError(t, err)
 	_, err = k.Execute(ctx, addr2, []byte("sender"), &types.UInt64Value{Value: 20}, nil)
 	require.NoError(t, err)
@ -35,7 +35,10 @@ func TestGenesis(t *testing.T) {
 	require.NoError(t, err)

 	// reset state
-	_, ctx = colltest.MockStore()
+	k, ctx = newKeeper(t, func(deps implementation.Dependencies) (string, implementation.Account, error) {
+		acc, err := NewTestAccount(deps)
+		return testAccountType, acc, err
+	})
 	err = k.ImportState(ctx, state)
 	require.NoError(t, err)

--- a/x/accounts/go.mod
+++ b/x/accounts/go.mod
@ -6,6 +6,7 @@ require (
 	cosmossdk.io/api v0.7.5
 	cosmossdk.io/collections v0.4.0
 	cosmossdk.io/core v0.12.1-0.20231114100755-569e3ff6a0d7
+	cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000
 	cosmossdk.io/depinject v1.0.0-alpha.4
 	cosmossdk.io/x/tx v0.13.3
 	github.com/cosmos/cosmos-sdk v0.51.0
@ -174,6 +175,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/auth => ../auth
--- a/x/accounts/internal/implementation/context_test.go
+++ b/x/accounts/internal/implementation/context_test.go
@ -9,11 +9,12 @@ import (
 	"github.com/stretchr/testify/require"

 	"cosmossdk.io/collections"
-	"cosmossdk.io/collections/colltest"
+	"cosmossdk.io/core/testing"
 )

 func TestMakeAccountContext(t *testing.T) {
-	storeService, originalContext := colltest.MockStore()
+	originalContext := coretesting.Context()
+	storeService := coretesting.KVStoreService(originalContext, "test")
 	accountAddr := []byte("accountAddr")
 	sender := []byte("sender")
 	sb := collections.NewSchemaBuilderFromAccessor(openKVStore)
--- a/x/accounts/utils_test.go
+++ b/x/accounts/utils_test.go
@ -11,10 +11,10 @@ import (

 	bankv1beta1 "cosmossdk.io/api/cosmos/bank/v1beta1"
 	basev1beta1 "cosmossdk.io/api/cosmos/base/v1beta1"
-	"cosmossdk.io/collections/colltest"
 	"cosmossdk.io/core/address"
 	"cosmossdk.io/core/event"
 	"cosmossdk.io/core/log"
+	"cosmossdk.io/core/testing"
 	coretransaction "cosmossdk.io/core/transaction"
 	"cosmossdk.io/x/accounts/internal/implementation"
 	"cosmossdk.io/x/tx/signing"
@ -73,7 +73,8 @@ func newKeeper(t *testing.T, accounts ...implementation.AccountCreatorFunc) (Kee
 	queryRouter.RegisterService(&bankv1beta1.Query_ServiceDesc, &bankQueryServer{})
 	msgRouter.RegisterService(&bankv1beta1.Msg_ServiceDesc, &bankMsgServer{})

-	ss, ctx := colltest.MockStore()
+	ctx := coretesting.Context()
+	ss := coretesting.KVStoreService(ctx, "test")
 	env := runtime.NewEnvironment(ss, log.NewNopLogger(), runtime.EnvWithQueryRouterService(queryRouter), runtime.EnvWithMsgRouterService(msgRouter))
 	env.EventService = eventService{}
 	m, err := NewKeeper(codec.NewProtoCodec(ir), env, addressCodec, ir, accounts...)
--- a/x/auth/go.mod
+++ b/x/auth/go.mod
@ -6,6 +6,7 @@ require (
 	cosmossdk.io/api v0.7.5
 	cosmossdk.io/collections v0.4.0
 	cosmossdk.io/core v0.12.1-0.20231114100755-569e3ff6a0d7
+	cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000
 	cosmossdk.io/depinject v1.0.0-alpha.4
 	cosmossdk.io/errors v1.0.1
 	cosmossdk.io/math v1.3.0
@ -175,6 +176,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/auth/migrations/v5/migrate_test.go
+++ b/x/auth/migrations/v5/migrate_test.go
@ -7,11 +7,12 @@ import (
 	"github.com/stretchr/testify/require"

 	"cosmossdk.io/collections"
-	"cosmossdk.io/collections/colltest"
+	"cosmossdk.io/core/testing"
 )

 func TestMigrate(t *testing.T) {
-	kv, ctx := colltest.MockStore()
+	ctx := coretesting.Context()
+	kv := coretesting.KVStoreService(ctx, "test")
 	sb := collections.NewSchemaBuilder(kv)
 	seq := collections.NewSequence(sb, collections.NewPrefix(0), "seq")

@ -33,7 +34,8 @@ func TestMigrate(t *testing.T) {
 	require.Equal(t, wantValue, gotValue)

 	// case the global account number was not set
-	ctx = kv.NewStoreContext() // this resets the store to zero
+	ctx = coretesting.Context()
+	kv = coretesting.KVStoreService(ctx, "test")
 	wantValue = collections.DefaultSequenceStart

 	err = Migrate(ctx, kv, seq)
--- a/x/authz/go.mod
+++ b/x/authz/go.mod
@ -169,6 +169,8 @@ require (
 	sigs.k8s.io/yaml v1.4.0 // indirect
 )

+require cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
+
 replace github.com/cosmos/cosmos-sdk => ../../.

 // TODO remove post spinning out all modules
@ -176,6 +178,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/bank/go.mod
+++ b/x/bank/go.mod
@ -168,6 +168,8 @@ require (
 	sigs.k8s.io/yaml v1.4.0 // indirect
 )

+require cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
+
 replace github.com/cosmos/cosmos-sdk => ../../.

 // TODO remove post spinning out all modules
@ -175,6 +177,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/circuit/go.mod
+++ b/x/circuit/go.mod
@ -174,6 +174,7 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/consensus/go.mod
+++ b/x/consensus/go.mod
@ -172,10 +172,12 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
 	cosmossdk.io/x/auth => ../auth
 	cosmossdk.io/x/bank => ../bank
 	cosmossdk.io/x/staking => ../staking
+	cosmossdk.io/x/tx => ../tx
 )
--- a/x/consensus/go.sum
+++ b/x/consensus/go.sum
@ -14,8 +14,6 @@ cosmossdk.io/store v1.1.1-0.20240418092142-896cdf1971bc h1:R9O9d75e0qZYUsVV0zzi+
 cosmossdk.io/store v1.1.1-0.20240418092142-896cdf1971bc/go.mod h1:amTTatOUV3u1PsKmNb87z6/galCxrRbz9kRdJkL0DyU=
 cosmossdk.io/x/accounts/defaults/lockup v0.0.0-20240417181816-5e7aae0db1f5 h1:eb0kcGyaYHSS0do7+MIWg7UKlskSH01biRNENbm/zDA=
 cosmossdk.io/x/accounts/defaults/lockup v0.0.0-20240417181816-5e7aae0db1f5/go.mod h1:drzY4oVisyWvSgpsM7ccQ7IX3efMuVIvd9Eij1Gm/6o=
-cosmossdk.io/x/tx v0.13.3 h1:Ha4mNaHmxBc6RMun9aKuqul8yHiL78EKJQ8g23Zf73g=
-cosmossdk.io/x/tx v0.13.3/go.mod h1:I8xaHv0rhUdIvIdptKIqzYy27+n2+zBVaxO6fscFhys=
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 h1:/vQbFIOMbk2FiG/kXiLl8BRyzTWDw7gX/Hz7Dd5eDMs=
--- a/x/distribution/go.mod
+++ b/x/distribution/go.mod
@ -179,6 +179,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/epochs/go.mod
+++ b/x/epochs/go.mod
@ -176,6 +176,7 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/evidence/go.mod
+++ b/x/evidence/go.mod
@ -174,6 +174,7 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/feegrant/go.mod
+++ b/x/feegrant/go.mod
@ -173,6 +173,8 @@ require (
 	sigs.k8s.io/yaml v1.4.0 // indirect
 )

+require cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
+
 replace github.com/cosmos/cosmos-sdk => ../../.

 // TODO remove post spinning out all modules
@ -180,6 +182,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/gov/go.mod
+++ b/x/gov/go.mod
@ -172,6 +172,8 @@ require (
 	sigs.k8s.io/yaml v1.4.0 // indirect
 )

+require cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
+
 replace github.com/cosmos/cosmos-sdk => ../../.

 // TODO remove post spinning out all modules
@ -179,6 +181,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/group/go.mod
+++ b/x/group/go.mod
@ -41,6 +41,7 @@ require (
 	buf.build/gen/go/cometbft/cometbft/protocolbuffers/go v1.34.1-20240312114316-c0d3497e35d6.1 // indirect
 	buf.build/gen/go/cosmos/gogo-proto/protocolbuffers/go v1.34.1-20240130113600-88ef6483f90f.1 // indirect
 	cosmossdk.io/collections v0.4.0 // indirect
+	cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
 	cosmossdk.io/x/accounts/defaults/lockup v0.0.0-20240417181816-5e7aae0db1f5 // indirect
 	cosmossdk.io/x/tx v0.13.3 // indirect
 	filippo.io/edwards25519 v1.1.0 // indirect
@ -182,6 +183,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/mint/go.mod
+++ b/x/mint/go.mod
@ -177,6 +177,7 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/nft/go.mod
+++ b/x/nft/go.mod
@ -174,6 +174,7 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/params/go.mod
+++ b/x/params/go.mod
@ -175,6 +175,7 @@ replace github.com/cosmos/cosmos-sdk => ../..
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/protocolpool/go.mod
+++ b/x/protocolpool/go.mod
@ -174,6 +174,7 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/slashing/go.mod
+++ b/x/slashing/go.mod
@ -175,6 +175,7 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/staking/go.mod
+++ b/x/staking/go.mod
@ -171,6 +171,8 @@ require (
 	go.opencensus.io v0.24.0 // indirect
 )

+require cosmossdk.io/core/testing v0.0.0-00010101000000-000000000000 // indirect
+
 replace github.com/cosmos/cosmos-sdk => ../../.

 // TODO remove post spinning out all modules
@ -178,6 +180,7 @@ replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/collections => ../../collections
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts
--- a/x/upgrade/go.mod
+++ b/x/upgrade/go.mod
@ -205,6 +205,7 @@ replace github.com/cosmos/cosmos-sdk => ../../.
 replace (
 	cosmossdk.io/api => ../../api
 	cosmossdk.io/core => ../../core
+	cosmossdk.io/core/testing => ../../core/testing
 	cosmossdk.io/depinject => ../../depinject
 	cosmossdk.io/log => ../../log
 	cosmossdk.io/x/accounts => ../accounts