| package multierr |
| |
| import ( |
| "errors" |
| "fmt" |
| "testing" |
| |
| "github.com/stretchr/testify/assert" |
| "github.com/stretchr/testify/require" |
| ) |
| |
| func TestCombine(t *testing.T) { |
| tests := []struct { |
| giveErrors []error |
| wantError error |
| wantMultiline string |
| wantSingleline string |
| }{ |
| { |
| giveErrors: nil, |
| wantError: nil, |
| }, |
| { |
| giveErrors: []error{}, |
| wantError: nil, |
| }, |
| { |
| giveErrors: []error{ |
| errors.New("foo"), |
| nil, |
| multiError{ |
| errors.New("bar"), |
| }, |
| nil, |
| }, |
| wantError: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| wantMultiline: "the following errors occurred:\n" + |
| " - foo\n" + |
| " - bar", |
| wantSingleline: "foo; bar", |
| }, |
| { |
| giveErrors: []error{ |
| errors.New("foo"), |
| multiError{ |
| errors.New("bar"), |
| }, |
| }, |
| wantError: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| wantMultiline: "the following errors occurred:\n" + |
| " - foo\n" + |
| " - bar", |
| wantSingleline: "foo; bar", |
| }, |
| { |
| giveErrors: []error{errors.New("great sadness")}, |
| wantError: errors.New("great sadness"), |
| wantMultiline: "great sadness", |
| wantSingleline: "great sadness", |
| }, |
| { |
| giveErrors: []error{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| wantError: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| wantMultiline: "the following errors occurred:\n" + |
| " - foo\n" + |
| " - bar", |
| wantSingleline: "foo; bar", |
| }, |
| { |
| giveErrors: []error{ |
| errors.New("great sadness"), |
| errors.New("multi\n line\nerror message"), |
| errors.New("single line error message"), |
| }, |
| wantError: multiError{ |
| errors.New("great sadness"), |
| errors.New("multi\n line\nerror message"), |
| errors.New("single line error message"), |
| }, |
| wantMultiline: "the following errors occurred:\n" + |
| " - great sadness\n" + |
| " - multi\n" + |
| " line\n" + |
| " error message\n" + |
| " - single line error message", |
| wantSingleline: "great sadness; " + |
| "multi\n line\nerror message; " + |
| "single line error message", |
| }, |
| { |
| giveErrors: []error{ |
| errors.New("foo"), |
| multiError{ |
| errors.New("bar"), |
| errors.New("baz"), |
| }, |
| errors.New("qux"), |
| }, |
| wantError: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| errors.New("baz"), |
| errors.New("qux"), |
| }, |
| wantMultiline: "the following errors occurred:\n" + |
| " - foo\n" + |
| " - bar\n" + |
| " - baz\n" + |
| " - qux", |
| wantSingleline: "foo; bar; baz; qux", |
| }, |
| { |
| giveErrors: []error{ |
| errors.New("foo"), |
| nil, |
| multiError{ |
| errors.New("bar"), |
| }, |
| nil, |
| }, |
| wantError: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| wantMultiline: "the following errors occurred:\n" + |
| " - foo\n" + |
| " - bar", |
| wantSingleline: "foo; bar", |
| }, |
| { |
| giveErrors: []error{ |
| errors.New("foo"), |
| multiError{ |
| errors.New("bar"), |
| }, |
| }, |
| wantError: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| wantMultiline: "the following errors occurred:\n" + |
| " - foo\n" + |
| " - bar", |
| wantSingleline: "foo; bar", |
| }, |
| } |
| |
| for i, tt := range tests { |
| t.Run(fmt.Sprint(i), func(t *testing.T) { |
| err := Combine(tt.giveErrors...) |
| require.Equal(t, tt.wantError, err) |
| |
| if tt.wantMultiline != "" { |
| assert.Equal(t, tt.wantMultiline, fmt.Sprintf("%+v", err)) |
| } |
| |
| if tt.wantSingleline != "" { |
| assert.Equal(t, tt.wantSingleline, err.Error()) |
| if s, ok := err.(fmt.Stringer); ok { |
| assert.Equal(t, tt.wantSingleline, s.String()) |
| } |
| assert.Equal(t, tt.wantSingleline, fmt.Sprintf("%v", err)) |
| } |
| }) |
| } |
| } |
| |
| func TestCombineDoesNotModifySlice(t *testing.T) { |
| errors := []error{ |
| errors.New("foo"), |
| nil, |
| errors.New("bar"), |
| } |
| |
| assert.NotNil(t, Combine(errors...)) |
| assert.Len(t, errors, 3) |
| assert.Nil(t, errors[1], 3) |
| } |
| |
| func TestAppend(t *testing.T) { |
| tests := []struct { |
| left error |
| right error |
| want error |
| }{ |
| { |
| left: nil, |
| right: nil, |
| want: nil, |
| }, |
| { |
| left: nil, |
| right: errors.New("great sadness"), |
| want: errors.New("great sadness"), |
| }, |
| { |
| left: errors.New("great sadness"), |
| right: nil, |
| want: errors.New("great sadness"), |
| }, |
| { |
| left: errors.New("foo"), |
| right: errors.New("bar"), |
| want: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| }, |
| { |
| left: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| right: errors.New("baz"), |
| want: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| errors.New("baz"), |
| }, |
| }, |
| { |
| left: errors.New("baz"), |
| right: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| want: multiError{ |
| errors.New("baz"), |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| }, |
| { |
| left: multiError{ |
| errors.New("foo"), |
| }, |
| right: multiError{ |
| errors.New("bar"), |
| }, |
| want: multiError{ |
| errors.New("foo"), |
| errors.New("bar"), |
| }, |
| }, |
| } |
| |
| for _, tt := range tests { |
| assert.Equal(t, tt.want, Append(tt.left, tt.right)) |
| } |
| } |