Coreth sync (#1418)

* fix test generator (#724)

* add go mod tidy check

Author: ceyonur

.github/workflows/tests.yml

@@ -35,6 +35,10 @@ jobs:
       - name: Run actionlint
         shell: bash
         run: scripts/actionlint.sh
+      - name: go mod tidy
+        run: |
+          go mod tidy
+          git diff --exit-code
 
   unit_test:
     name: Golang Unit Tests (${{ matrix.os }})

triedb/pathdb/database_test.go

@@ -228,7 +228,11 @@ func (t *tester) generate(parent common.Hash) (common.Hash, *trienode.MergedNode
 		dirties = make(map[common.Hash]struct{})
 	)
 	for i := 0; i < 20; i++ {
-		switch rand.Intn(opLen) {
+		op := createAccountOp
+		if i > 0 {
+			op = rand.Intn(opLen)
+		}
+		switch op {
 		case createAccountOp:
 			// account creation
 			addr := testutil.RandomAddress()