Add ErrContext method to Result

result.go

@@ -157,6 +157,14 @@ func (r Result[T]) MapErr(mapper func(error) (T, error)) Result[T] {
 	return Ok(r.value)
 }
 
+func (r Result[T]) ErrContext(context string) Result[T] {
+	if r.isErr {
+		return Err[T](fmt.Errorf("%s\n\nOriginal Error:\n%s", context, r.err.Error()))
+	}
+
+	return Ok(r.value)
+}
+
 // FlatMap executes the mapper function if Result is valid. It returns a new Result.
 // Play: https://go.dev/play/p/Ud5QjZOqg-7
 func (r Result[T]) FlatMap(mapper func(value T) Result[T]) Result[T] {

result_test.go

@@ -190,6 +190,14 @@ func TestResultMapErr(t *testing.T) {
 	is.Equal(Result[int]{value: 42, isErr: false, err: nil}, opt2)
 }
 
+func TestResultErrContext(t *testing.T) {
+	is := assert.New(t)
+
+	opt := Err[int](assert.AnError).ErrContext("Oh bananas")
+
+	is.Equal(Result[int]{value: 0, isErr: true, err: errors.New("Oh bananas\n\nOriginal Error:\nassert.AnError general error for testing")}, opt)
+}
+
 func TestResultFlatMap(t *testing.T) {
 	is := assert.New(t)