feature: add redundant-test-main-exit rule (#1208)

testdata/redundant_test_main_exit_test.go

@@ -0,0 +1,27 @@
+package fixtures
+
+import (
+	"fmt"
+	"os"
+	"testing"
+)
+
+func TestMain(m *testing.M) {
+	setup()
+	i := m.Run()
+	teardown()
+	// must not match because the go version of this module is less than 1.15
+	os.Exit(i)
+}
+
+func setup() {
+	fmt.Println("Setup")
+}
+
+func teardown() {
+	fmt.Println("Teardown")
+}
+
+func Test_function(t *testing.T) {
+	t.Error("Fail")
+}