Function TestAs

go113_test.go:80–137

(t *testing.T)

func (c customErr) Error() string { return c.msg }

func TestAs(t *testing.T) {
	var err = customErr{msg: "test message"}

	type args struct {
		err    error
		target interface{}
	}
	tests := []struct {
		name string
		args args
		want bool
	}{
		{
			name: "with stack",
			args: args{
				err:    WithStack(err),
				target: new(customErr),
			},
			want: true,
		},
		{
			name: "with message",
			args: args{
				err:    WithMessage(err, "test"),
				target: new(customErr),
			},
			want: true,
		},
		{
			name: "with message format",
			args: args{
				err:    WithMessagef(err, "%s", "test"),
				target: new(customErr),
			},
			want: true,
		},
		{
			name: "std errors compatibility",
			args: args{
				err:    fmt.Errorf("wrap it: %w", err),
				target: new(customErr),
			},
			want: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := As(tt.args.err, tt.args.target); got != tt.want {
				t.Errorf("As() = %v, want %v", got, tt.want)
			}

			ce := tt.args.target.(*customErr)
			if !reflect.DeepEqual(err, *ce) {
				t.Errorf("set target error failed, target error is %v", *ce)
			}
		})
	}
}