error_response_test.go

package restapi

import "testing"

func TestAPI_NewError_KnownCode(t *testing.T) {
	t.Parallel()

	got := Default().NewError(CodeNotFound)
	if got.Code != CodeNotFound || got.Message != "resource not found" {
		t.Fatalf("unexpected: %+v", got)
	}
	if got.Details != nil {
		t.Fatalf("Details should be nil by default; got %#v", got.Details)
	}
}

func TestAPI_NewError_UnknownCode_FallsBack(t *testing.T) {
	t.Parallel()

	got := Default().NewError(99999)
	if got.Code != CodeInternal {
		t.Fatalf("got %+v; want fallback CodeInternal", got)
	}
}

func TestAPI_NewError_AppliesOptions_SkipsNil(t *testing.T) {
	t.Parallel()

	got := Default().NewError(
		CodeBadRequest,
		nil,
		WithMessage("custom"),
		WithDetails(map[string]any{"x": 1}),
	)
	if got.Message != "custom" {
		t.Fatalf("WithMessage did not apply; got %q", got.Message)
	}
	if d, ok := got.Details.(map[string]any); !ok || d["x"] != 1 {
		t.Fatalf("WithDetails did not apply; got %#v", got.Details)
	}
}

func TestPackage_NewError_DelegatesToDefault(t *testing.T) {
	t.Parallel()

	a := Default().NewError(CodeBadRequest)
	b := NewError(CodeBadRequest)
	if a != b {
		t.Fatalf("package-level NewError diverged from Default().NewError: %+v vs %+v", a, b)
	}
}