From 23f666beff88f14cb11ad47528982cde742d25d6 Mon Sep 17 00:00:00 2001
From: violet <158512193+fastfadingviolets@users.noreply.github.com>
Date: Mon, 9 Dec 2024 05:18:51 -0500
Subject: [PATCH] ci: Add an interchaintest for double signing evidence (#3415)

---
 tests/interchain/delegator/evidence_test.go | 62 +++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 tests/interchain/delegator/evidence_test.go

diff --git a/tests/interchain/delegator/evidence_test.go b/tests/interchain/delegator/evidence_test.go
new file mode 100644
index 0000000000..520e0b01f7
--- /dev/null
+++ b/tests/interchain/delegator/evidence_test.go
@@ -0,0 +1,62 @@
+package delegator_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/cosmos/gaia/v21/tests/interchain/chainsuite"
+	"github.com/cosmos/gaia/v21/tests/interchain/delegator"
+	"github.com/strangelove-ventures/interchaintest/v8"
+	"github.com/strangelove-ventures/interchaintest/v8/testutil"
+	"github.com/stretchr/testify/suite"
+)
+
+type EvidenceSuite struct {
+	*delegator.Suite
+}
+
+func (s *EvidenceSuite) TestDoubleSigning() {
+	from, to := 0, 3
+	privkey, err := s.Chain.Validators[from].PrivValFileContent(s.GetContext())
+	s.Require().NoError(err)
+	s.Require().NoError(s.Chain.Validators[to].OverwritePrivValFile(s.GetContext(), privkey))
+
+	s.Require().NoError(s.Chain.StopAllNodes(s.GetContext()))
+
+	s.Require().NoError(s.Chain.Validators[to].CreateNodeContainer(s.GetContext()))
+	s.Require().NoError(s.Chain.Validators[to].StartContainer(s.GetContext()))
+	time.Sleep(10 * time.Second)
+	s.Require().NoError(s.Chain.Validators[from].CreateNodeContainer(s.GetContext()))
+	s.Require().NoError(s.Chain.Validators[from].StartContainer(s.GetContext()))
+	time.Sleep(10 * time.Second)
+
+	for i := 0; i < len(s.Chain.Validators); i++ {
+		if i == from || i == to {
+			continue
+		}
+		s.Require().NoError(s.Chain.Validators[i].CreateNodeContainer(s.GetContext()))
+		s.Require().NoError(s.Chain.Validators[i].StartContainer(s.GetContext()))
+	}
+	s.Require().NoError(testutil.WaitForBlocks(s.GetContext(), 5, s.Chain))
+
+	evidence, err := s.Chain.QueryJSON(s.GetContext(), "evidence", "evidence", "list")
+	s.Require().NoError(err)
+	s.Require().NotEmpty(evidence.Array())
+	valcons := evidence.Get("0.value.consensus_address").String()
+	s.Require().NotEmpty(valcons)
+	s.Require().Equal(s.Chain.ValidatorWallets[from].ValConsAddress, valcons)
+}
+
+func TestEvidence(t *testing.T) {
+	nodes := 4
+	s := &EvidenceSuite{
+		Suite: &delegator.Suite{Suite: chainsuite.NewSuite(chainsuite.SuiteConfig{
+			UpgradeOnSetup: true,
+			ChainSpec: &interchaintest.ChainSpec{
+				NumValidators: &nodes,
+			},
+		})},
+	}
+	suite.Run(t, s)
+
+}