Method New handles error more exactly

CHANGELOG.md

@@ -1,3 +1,7 @@
+# v1.0.2 (Jan 7, 2023)
+
+-   Exception.New handles error more exactly.
+
 # v1.0.1 (Jan 7, 2023)
 
 -   Exceptions with different parent now can have the same name.

exception.go

@@ -81,6 +81,12 @@ func (exc Exception) Newf(msg string, a ...any) Error {
 
 // New creates an Error with default formatting objects.
 func (exc Exception) New(a ...any) Error {
+	for i := range a {
+		if e, ok := a[i].(Error); ok {
+			a[i] = e.msg
+		}
+	}
+
 	return Error{exc: exc, msg: fmt.Sprint(a...)}
 }
 

exception_test.go

@@ -34,3 +34,14 @@ func TestException(t *testing.T) {
 	xycond.ExpectTrue(strings.Contains(c1.Error(), "class1")).Test(t)
 	xycond.ExpectTrue(strings.Contains(c2.Error(), "class2")).Test(t)
 }
+
+func TestExceptionSameName(t *testing.T) {
+	var c = xyerror.NewException(t.Name())
+	xycond.ExpectNotPanic(func() { c.NewException(t.Name()) }).Test(t)
+}
+
+func TestExceptionNewError(t *testing.T) {
+	var e1 = xyerror.ValueError.New(t.Name())
+	var e2 = xyerror.TypeError.New(e1)
+	xycond.ExpectEqual(e2.Error(), "TypeError: "+t.Name()).Test(t)
+}