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https://github.com/IBM/fp-go.git
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55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package errors
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import (
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"fmt"
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"testing"
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F "github.com/IBM/fp-go/function"
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O "github.com/IBM/fp-go/option"
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"github.com/stretchr/testify/assert"
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)
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type MyError struct{}
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func (m *MyError) Error() string {
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return "boom"
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}
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func TestAs(t *testing.T) {
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root := &MyError{}
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err := fmt.Errorf("This is my custom error, %w", root)
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errO := F.Pipe1(
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err,
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As[*MyError](),
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)
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assert.Equal(t, O.Of(root), errO)
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}
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func TestNotAs(t *testing.T) {
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err := fmt.Errorf("This is my custom error")
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errO := F.Pipe1(
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err,
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As[*MyError](),
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)
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assert.Equal(t, O.None[*MyError](), errO)
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}
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