Add Slashing Query Params (#3117)

client/lcd/lcd_test.go

@@ -26,6 +26,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/auth"
 	authrest "github.com/cosmos/cosmos-sdk/x/auth/client/rest"
 	"github.com/cosmos/cosmos-sdk/x/gov"
+	"github.com/cosmos/cosmos-sdk/x/slashing"
 	"github.com/cosmos/cosmos-sdk/x/stake"
 	stakeTypes "github.com/cosmos/cosmos-sdk/x/stake/types"
 )
@@ -741,3 +742,15 @@ func TestProposalsQuery(t *testing.T) {
 	require.True(t, addrs[0].String() == votes[0].Voter.String() || addrs[0].String() == votes[1].Voter.String())
 	require.True(t, addrs[1].String() == votes[0].Voter.String() || addrs[1].String() == votes[1].Voter.String())
 }
+
+func TestSlashingGetParams(t *testing.T) {
+	cleanup, _, _, port := InitializeTestLCD(t, 1, []sdk.AccAddress{})
+	defer cleanup()
+
+	res, body := Request(t, port, "GET", "/slashing/parameters", nil)
+	require.Equal(t, http.StatusOK, res.StatusCode, body)
+
+	var params slashing.Params
+	err := cdc.UnmarshalJSON([]byte(body), &params)
+	require.NoError(t, err)
+}

client/lcd/swagger-ui/swagger.yaml

@@ -1187,6 +1187,35 @@ paths:
           description: Key password is wrong
         500:
           description: Internal Server Error
+  /slashing/parameters:
+    get:
+      summary: Get the current slashing parameters
+      tags:
+      - ICS23
+      produces:
+      - application/json
+      responses:
+        200:
+          description: OK
+          schema:
+            type: object
+            properties:
+              max_evidence_age:
+                type: integer
+              signed_blocks_window:
+                type: integer
+              min_signed_per_window:
+                type: integer
+              double_sign_unbond_duration:
+                type: integer
+              downtime_unbond_duration:
+                type: integer
+              slash_fraction_double_sign:
+                type: integer
+              slash_fraction_downtime:
+                type: integer
+        500:
+          description: Internal Server Error
   /gov/proposals:
     post:
       summary: Submit a proposal