Change to guard clause

suite/suite.go

@@ -181,7 +181,9 @@ func Run(t *testing.T, suite TestingSuite) {
 func runTests(t testing.TB, tests []testing.InternalTest) {
 	if len(tests) == 0 {
 		t.Log("warning: no tests to run")
-	} else {
+		return
+	}
+
 	r, ok := t.(runner)
 	if !ok { // backwards compatibility with Go 1.6 and below
 		if !testing.RunTests(allTestsFilter, tests) {
@@ -194,7 +196,6 @@ func runTests(t testing.TB, tests []testing.InternalTest) {
 		r.Run(test.Name, test.F)
 	}
 }
-}
 
 // Filtering method according to set regular expression
 // specified command-line argument -m