github.com/rclone/rclone@v1.66.1-0.20240517100346-7b89735ae726/backend/union/errors_test.go (about)

     1  //go:build go1.20
     2  
     3  package union
     4  
     5  import (
     6  	"errors"
     7  	"testing"
     8  
     9  	"github.com/stretchr/testify/assert"
    10  )
    11  
    12  var (
    13  	err1 = errors.New("Error 1")
    14  	err2 = errors.New("Error 2")
    15  	err3 = errors.New("Error 3")
    16  )
    17  
    18  func TestErrorsMap(t *testing.T) {
    19  	es := Errors{
    20  		nil,
    21  		err1,
    22  		err2,
    23  	}
    24  	want := Errors{
    25  		err2,
    26  	}
    27  	got := es.Map(func(e error) error {
    28  		if e == err1 {
    29  			return nil
    30  		}
    31  		return e
    32  	})
    33  	assert.Equal(t, want, got)
    34  }
    35  
    36  func TestErrorsFilterNil(t *testing.T) {
    37  	es := Errors{
    38  		nil,
    39  		err1,
    40  		nil,
    41  		err2,
    42  		nil,
    43  	}
    44  	want := Errors{
    45  		err1,
    46  		err2,
    47  	}
    48  	got := es.FilterNil()
    49  	assert.Equal(t, want, got)
    50  }
    51  
    52  func TestErrorsErr(t *testing.T) {
    53  	// Check not all nil case
    54  	es := Errors{
    55  		nil,
    56  		err1,
    57  		nil,
    58  		err2,
    59  		nil,
    60  	}
    61  	want := Errors{
    62  		err1,
    63  		err2,
    64  	}
    65  	got := es.Err()
    66  
    67  	// Check all nil case
    68  	assert.Equal(t, want, got)
    69  	es = Errors{
    70  		nil,
    71  		nil,
    72  		nil,
    73  	}
    74  	assert.Nil(t, es.Err())
    75  }
    76  
    77  func TestErrorsError(t *testing.T) {
    78  	assert.Equal(t, "no error", Errors{}.Error())
    79  	assert.Equal(t, "1 error: Error 1", Errors{err1}.Error())
    80  	assert.Equal(t, "1 error: nil error", Errors{nil}.Error())
    81  	assert.Equal(t, "2 errors: Error 1; Error 2", Errors{err1, err2}.Error())
    82  }
    83  
    84  func TestErrorsUnwrap(t *testing.T) {
    85  	es := Errors{
    86  		err1,
    87  		err2,
    88  	}
    89  	assert.Equal(t, []error{err1, err2}, es.Unwrap())
    90  	assert.True(t, errors.Is(es, err1))
    91  	assert.True(t, errors.Is(es, err2))
    92  	assert.False(t, errors.Is(es, err3))
    93  }