demangle: in TestCases count failures and differences separately

cases_test.go

@@ -30086,7 +30086,8 @@ var casesExceptions = map[string]string{
 
 func TestCases(t *testing.T) {
 	t.Parallel()
-	expectedFails := 0
+	expectedErrors := 0
+	expectedDifferent := 0
 	found := make(map[string]bool)
 	for _, test := range cases {
 		expectedFail := casesExpectedFailures[test[0]]
@@ -30102,7 +30103,7 @@ func TestCases(t *testing.T) {
 			if expectedFail || (haveException && exception == "") {
 				t.Logf("demangling %s: expected failure: error %v", test[0], err)
 				if expectedFail {
-					expectedFails++
+					expectedErrors++
 					found[test[0]] = true
 				}
 			} else {
@@ -30111,7 +30112,7 @@ func TestCases(t *testing.T) {
 		} else if got != want && !closeEnoughCase(got, want) {
 			if expectedFail {
 				t.Logf("demangling %s: expected failure: got %s, want %s", test[0], got, want)
-				expectedFails++
+				expectedDifferent++
 				found[test[0]] = true
 			} else if haveException && exception == "" {
 				t.Errorf("demangling %s: expected to fail, but succeeded with %s", test[0], got)
@@ -30137,8 +30138,11 @@ func TestCases(t *testing.T) {
 			}
 		}
 	}
-	if expectedFails > 0 {
-		t.Logf("%d expected failures out of %d cases", expectedFails, len(cases))
+	if expectedDifferent > 0 {
+		t.Logf("%d different demanglings out of %d cases", expectedDifferent, len(cases))
+	}
+	if expectedErrors > 0 {
+		t.Logf("%d expected failures out of %d cases", expectedErrors, len(cases))
 	}
 }