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// +build go1.13
package errorx
import (
"errors"
"fmt"
"io"
"testing"
"github.com/stretchr/testify/require"
)
func TestErrorUnwrap(t *testing.T) {
t.Run("Trivial", func(t *testing.T) {
err := testType.NewWithNoMessage()
unwrapped := errors.Unwrap(err)
require.Nil(t, unwrapped)
})
t.Run("Wrap", func(t *testing.T) {
err := testTypeBar1.Wrap(testType.NewWithNoMessage(), "")
unwrapped := errors.Unwrap(err)
require.Nil(t, unwrapped)
})
t.Run("WrapForeign", func(t *testing.T) {
err := testTypeBar1.Wrap(io.EOF, "")
unwrapped := errors.Unwrap(err)
require.Nil(t, unwrapped)
})
t.Run("Decorate", func(t *testing.T) {
err := Decorate(testType.NewWithNoMessage(), "")
unwrapped := errors.Unwrap(err)
require.NotNil(t, unwrapped)
require.True(t, IsOfType(unwrapped, testType))
require.True(t, Cast(unwrapped).Type() == testType)
})
t.Run("DecorateForeign", func(t *testing.T) {
err := Decorate(io.EOF, "")
unwrapped := errors.Unwrap(err)
require.NotNil(t, unwrapped)
require.True(t, errors.Is(unwrapped, io.EOF))
require.True(t, unwrapped == io.EOF)
})
t.Run("Nested", func(t *testing.T) {
err := Decorate(Decorate(testType.NewWithNoMessage(), ""), "")
unwrapped := errors.Unwrap(err)
require.NotNil(t, unwrapped)
unwrapped = errors.Unwrap(unwrapped)
require.NotNil(t, unwrapped)
require.True(t, IsOfType(unwrapped, testType))
})
t.Run("NestedWrapped", func(t *testing.T) {
err := Decorate(testTypeBar1.Wrap(testType.NewWithNoMessage(), ""), "")
unwrapped := errors.Unwrap(err)
require.NotNil(t, unwrapped)
require.True(t, IsOfType(unwrapped, testTypeBar1))
unwrapped = errors.Unwrap(unwrapped)
require.Nil(t, unwrapped)
})
t.Run("NestedForeign", func(t *testing.T) {
err := Decorate(Decorate(io.EOF, ""), "")
unwrapped := errors.Unwrap(err)
require.NotNil(t, unwrapped)
unwrapped = errors.Unwrap(unwrapped)
require.NotNil(t, unwrapped)
require.True(t, errors.Is(unwrapped, io.EOF))
})
}
func TestErrorIs(t *testing.T) {
t.Run("Trivial", func(t *testing.T) {
err := testType.NewWithNoMessage()
require.True(t, errors.Is(err, testType.NewWithNoMessage()))
require.False(t, errors.Is(err, testTypeBar1.NewWithNoMessage()))
})
t.Run("Wrap", func(t *testing.T) {
err := testTypeBar1.Wrap(testType.NewWithNoMessage(), "")
require.False(t, errors.Is(err, testType.NewWithNoMessage()))
require.True(t, errors.Is(err, testTypeBar1.NewWithNoMessage()))
})
t.Run("Supertype", func(t *testing.T) {
err := testSubtype0.Wrap(testTypeBar1.NewWithNoMessage(), "")
require.True(t, errors.Is(err, testType.NewWithNoMessage()))
require.True(t, errors.Is(err, testSubtype0.NewWithNoMessage()))
require.False(t, errors.Is(err, testTypeBar1.NewWithNoMessage()))
})
t.Run("Decorate", func(t *testing.T) {
err := Decorate(testType.NewWithNoMessage(), "")
require.True(t, errors.Is(err, testType.NewWithNoMessage()))
})
t.Run("DecorateForeign", func(t *testing.T) {
err := Decorate(io.EOF, "")
require.True(t, errors.Is(err, io.EOF))
})
}
func TestErrorsAndErrorx(t *testing.T) {
t.Run("DecoratedForeign", func(t *testing.T) {
err := fmt.Errorf("error test: %w", testType.NewWithNoMessage())
require.True(t, errors.Is(err, testType.NewWithNoMessage()))
require.True(t, IsOfType(err, testType))
})
t.Run("LayeredDecorate", func(t *testing.T) {
err := Decorate(fmt.Errorf("error test: %w", testType.NewWithNoMessage()), "test")
require.True(t, errors.Is(err, testType.NewWithNoMessage()))
require.True(t, IsOfType(err, testType))
})
t.Run("LayeredDecorateAgain", func(t *testing.T) {
err := fmt.Errorf("error test: %w", Decorate(io.EOF, "test"))
require.True(t, errors.Is(err, io.EOF))
})
t.Run("Wrap", func(t *testing.T) {
err := fmt.Errorf("error test: %w", testType.Wrap(io.EOF, "test"))
require.False(t, errors.Is(err, io.EOF))
require.True(t, errors.Is(err, testType.NewWithNoMessage()))
})
}
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