Adds deeply nested tests

Author: kalverra

tools/flakeguard/runner/example_test_package/example_tests_test.go

@@ -102,6 +102,23 @@ func TestFailInParentBeforeSubTests(t *testing.T) {
 	})
 }
 
+func TestDeeplyNestedSubTests(t *testing.T) {
+	t.Parallel()
+
+	t.Run("Level1", func(t *testing.T) {
+		t.Run("Level2", func(t *testing.T) {
+			t.Run("Level3", func(t *testing.T) {
+				t.Run("Pass", func(t *testing.T) {
+					t.Log("This deeply nested subtest always passes")
+				})
+				t.Run("Fail", func(t *testing.T) {
+					t.Fatal("This deeply nested subtest always fails")
+				})
+			})
+		})
+	})
+}
+
 // This test should have a 50% pass ratio
 func TestFlaky(t *testing.T) {
 	t.Parallel()

tools/flakeguard/runner/runner_test.go

@@ -155,6 +155,30 @@ func TestRun(t *testing.T) {
 					exactRuns:   &defaultTestRunCount,
 					allFailures: true,
 				},
+				"TestDeeplyNestedSubTests": {
+					exactRuns:   &defaultTestRunCount,
+					allFailures: true,
+				},
+				"TestDeeplyNestedSubTests/Level1": {
+					exactRuns:   &defaultTestRunCount,
+					allFailures: true,
+				},
+				"TestDeeplyNestedSubTests/Level1/Level2": {
+					exactRuns:   &defaultTestRunCount,
+					allFailures: true,
+				},
+				"TestDeeplyNestedSubTests/Level1/Level2/Level3": {
+					exactRuns:   &defaultTestRunCount,
+					allFailures: true,
+				},
+				"TestDeeplyNestedSubTests/Level1/Level2/Level3/Pass": {
+					exactRuns:    &defaultTestRunCount,
+					allSuccesses: true,
+				},
+				"TestDeeplyNestedSubTests/Level1/Level2/Level3/Fail": {
+					exactRuns:   &defaultTestRunCount,
+					allFailures: true,
+				},
 			},
 		},
 		{