packer-cn/packer/multi_error_test.go

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package packer
import (
"errors"
"testing"
)
func TestMultiError_Impl(t *testing.T) {
var raw interface{}
raw = &MultiError{}
if _, ok := raw.(error); !ok {
t.Fatal("MultiError must implement error")
}
}
func TestMultiErrorError(t *testing.T) {
expected := `2 error(s) occurred:
* foo
* bar`
errors := []error{
errors.New("foo"),
errors.New("bar"),
}
multi := &MultiError{errors}
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if multi.Error() != expected {
t.Fatalf("bad: %s", multi.Error())
}
}
func TestMultiErrorAppend_MultiError(t *testing.T) {
original := &MultiError{
Errors: []error{errors.New("foo")},
}
result := MultiErrorAppend(original, errors.New("bar"))
if len(result.Errors) != 2 {
t.Fatalf("wrong len: %d", len(result.Errors))
}
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original = &MultiError{}
result = MultiErrorAppend(original, errors.New("bar"))
if len(result.Errors) != 1 {
t.Fatalf("wrong len: %d", len(result.Errors))
}
}
func TestMultiErrorAppend_NonMultiError(t *testing.T) {
original := errors.New("foo")
result := MultiErrorAppend(original, errors.New("bar"))
if len(result.Errors) != 2 {
t.Fatalf("wrong len: %d", len(result.Errors))
}
}