ci: separate out rpc and integration tests (#931)

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

.github/workflows/build.yml

@@ -29,4 +29,4 @@ jobs:
             .sum
       - run: |
           make build
-        if: "env.GIT_DIFF != ''"
+        if: env.GIT_DIFF

.github/workflows/deploy-contract.yml

@@ -35,4 +35,4 @@ jobs:
         run: |
           sudo make contract-tools
           sudo make test-contract
-        if: "env.GIT_DIFF != ''"
+        if: env.GIT_DIFF

.github/workflows/test.yml

@@ -73,7 +73,7 @@ jobs:
       - name: test-importer
         run: |
           make test-import
-        if: "env.GIT_DIFF != ''"
+        if: env.GIT_DIFF
 
   test-solidity:
     runs-on: ubuntu-latest
@@ -100,7 +100,7 @@ jobs:
       - name: test-solidity
         run: |
           ./scripts/run-solidity-tests.sh --batch=${{ matrix.batch }}
-        if: "env.GIT_DIFF != ''"
+        if: env.GIT_DIFF
 
   liveness-test:
     runs-on: ubuntu-latest
@@ -150,3 +150,23 @@ jobs:
         run: |
           make test-rpc
         if: env.GIT_DIFF
+
+  test-e2e:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/setup-go@v2.1.4
+        with:
+          go-version: 1.17
+      - uses: actions/checkout@v2.4.0
+      - uses: technote-space/get-diff-action@v6.0.1
+        with:
+          PATTERNS: |
+            **/**.sol
+            **/**.go
+            go.mod
+            go.sum
+      - name: Test e2e
+        run: |
+          make test-integration
+        if: env.GIT_DIFF