test: add evidence e2e tests (#5488)

test/e2e/tests/app_test.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
 	e2e "github.com/tendermint/tendermint/test/e2e/pkg"
 	"github.com/tendermint/tendermint/types"
 )

test/e2e/tests/block_test.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
 	e2e "github.com/tendermint/tendermint/test/e2e/pkg"
 )
 

test/e2e/tests/e2e_test.go

@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+
 	rpchttp "github.com/tendermint/tendermint/rpc/client/http"
 	rpctypes "github.com/tendermint/tendermint/rpc/core/types"
 	e2e "github.com/tendermint/tendermint/test/e2e/pkg"

test/e2e/tests/evidence_test.go

@@ -0,0 +1,50 @@
+package e2e_test
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	e2e "github.com/tendermint/tendermint/test/e2e/pkg"
+	"github.com/tendermint/tendermint/types"
+)
+
+// assert that all nodes that have blocks during the height (or height + 1) of a misbehavior has evidence
+// for that misbehavior
+func TestEvidence_Misbehavior(t *testing.T) {
+	blocks := fetchBlockChain(t)
+	testNode(t, func(t *testing.T, node e2e.Node) {
+		for _, block := range blocks {
+			// Find any evidence blaming this node in this block
+			var nodeEvidence types.Evidence
+			for _, evidence := range block.Evidence.Evidence {
+				switch evidence := evidence.(type) {
+				case *types.DuplicateVoteEvidence:
+					if bytes.Equal(evidence.VoteA.ValidatorAddress, node.Key.PubKey().Address()) {
+						nodeEvidence = evidence
+					}
+				default:
+					t.Fatalf("unexpected evidence type %T", evidence)
+				}
+			}
+
+			// Check that evidence was as expected (evidence is submitted in following height)
+			misbehavior, ok := node.Misbehaviors[block.Height-1]
+			if !ok {
+				require.Nil(t, nodeEvidence, "found unexpected evidence %v in height %v",
+					nodeEvidence, block.Height)
+				continue
+			}
+			require.NotNil(t, nodeEvidence, "no evidence found for misbehavior %v in height %v",
+				misbehavior, block.Height)
+
+			switch misbehavior {
+			case "double-prevote":
+				require.IsType(t, &types.DuplicateVoteEvidence{}, nodeEvidence, "unexpected evidence type")
+			default:
+				t.Fatalf("unknown misbehavior %v", misbehavior)
+			}
+		}
+	})
+}

test/e2e/tests/net_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+
 	e2e "github.com/tendermint/tendermint/test/e2e/pkg"
 )
 

test/e2e/tests/validator_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+
 	e2e "github.com/tendermint/tendermint/test/e2e/pkg"
 	"github.com/tendermint/tendermint/types"
 )