Add tests for ValidateBasic methods (#2754)

Fixes #2740

evidence/reactor_test.go

@@ -10,6 +10,7 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/crypto/secp256k1"
 	dbm "github.com/tendermint/tendermint/libs/db"
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/p2p"
@@ -178,3 +179,30 @@ func TestReactorSelectiveBroadcast(t *testing.T) {
 	peers := reactors[1].Switch.Peers().List()
 	assert.Equal(t, 1, len(peers))
 }
+func TestEvidenceListMessageValidationBasic(t *testing.T) {
+
+	testCases := []struct {
+		testName          string
+		malleateEvListMsg func(*EvidenceListMessage)
+		expectErr         bool
+	}{
+		{"Good EvidenceListMessage", func(evList *EvidenceListMessage) {}, false},
+		{"Invalid EvidenceListMessage", func(evList *EvidenceListMessage) {
+			evList.Evidence = append(evList.Evidence,
+				&types.DuplicateVoteEvidence{PubKey: secp256k1.GenPrivKey().PubKey()})
+		}, true},
+	}
+	for _, tc := range testCases {
+		t.Run(tc.testName, func(t *testing.T) {
+			evListMsg := &EvidenceListMessage{}
+			n := 3
+			valAddr := []byte("myval")
+			evListMsg.Evidence = make([]types.Evidence, n)
+			for i := 0; i < n; i++ {
+				evListMsg.Evidence[i] = types.NewMockGoodEvidence(int64(i+1), 0, valAddr)
+			}
+			tc.malleateEvListMsg(evListMsg)
+			assert.Equal(t, tc.expectErr, evListMsg.ValidateBasic() != nil, "Validate Basic had an unexpected result")
+		})
+	}
+}