new test for out.Handle

removing no need panic call: fix

if test asserter isn't given, we use TestFull to get call stack

Author: lainio

assert/assert.go

@@ -99,8 +99,7 @@ func PushTester(t testing.TB, a ...defInd) function {
 	} else if Default()&AsserterUnitTesting == 0 {
 		// if this is forgotten or tests don't have proper place to set it
 		// it's good to keep the API as simple as possible
-		SetDefault(Test)
-		// TODO: parallel testing is something we should test.
+		SetDefault(TestFull)
 	}
 	testers.Tx(func(m testersMap) {
 		rid := goid()

try/out.go

@@ -112,7 +112,6 @@ func (o *Result) Handle(a ...any) *Result {
 		o.Err = fmt.Errorf(f+wrapStr(), append(a[1:], o.Err)...)
 	case ErrFn:
 		o.Err = f(o.Err)
-		panic(o.Err)
 	case error:
 		if len(a) == 2 {
 			hfn, haveHandlerFn := a[1].(ErrFn)

try/out_test.go

@@ -107,6 +107,26 @@ func TestResult2_Logf(t *testing.T) {
 	test.RequireEqual(t, num2, 2)
 }
 
+func TestResult_Handle(t *testing.T) {
+	// try out f() |err| handle to show how to stop propagate error
+	callFn := func(mode int) (err error) {
+		defer err2.Handle(&err)
+
+		try.Out(fmt.Errorf("test error")).Handle(func(err error) error {
+			if mode == 0 {
+				return err
+			}
+			return nil // no error to throw
+		})
+		return nil
+	}
+	err := callFn(1)
+	test.Requiref(t, err == nil, "no error when Out.Handle sets it nil")
+
+	err = callFn(0)
+	test.Requiref(t, err != nil, "want error when Out.Handle sets it the same")
+}
+
 func ExampleResult1_Handle() {
 	// try out f() |err| handle to show power of error handling language, EHL
 	callRead := func(in io.Reader, b []byte) (eof bool, n int) {