github.com/containerd/containerd@v22.0.0-20200918172823-438c87b8e050+incompatible/errdefs/grpc_test.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package errdefs
    18  
    19  import (
    20  	"context"
    21  	"testing"
    22  
    23  	"google.golang.org/grpc/codes"
    24  	"google.golang.org/grpc/status"
    25  
    26  	"github.com/pkg/errors"
    27  )
    28  
    29  func TestGRPCRoundTrip(t *testing.T) {
    30  	errShouldLeaveAlone := errors.New("unknown to package")
    31  
    32  	for _, testcase := range []struct {
    33  		input error
    34  		cause error
    35  		str   string
    36  	}{
    37  		{
    38  			input: ErrAlreadyExists,
    39  			cause: ErrAlreadyExists,
    40  		},
    41  		{
    42  			input: ErrNotFound,
    43  			cause: ErrNotFound,
    44  		},
    45  		{
    46  			input: errors.Wrapf(ErrFailedPrecondition, "test test test"),
    47  			cause: ErrFailedPrecondition,
    48  			str:   "test test test: failed precondition",
    49  		},
    50  		{
    51  			input: status.Errorf(codes.Unavailable, "should be not available"),
    52  			cause: ErrUnavailable,
    53  			str:   "should be not available: unavailable",
    54  		},
    55  		{
    56  			input: errShouldLeaveAlone,
    57  			cause: ErrUnknown,
    58  			str:   errShouldLeaveAlone.Error() + ": " + ErrUnknown.Error(),
    59  		},
    60  		{
    61  			input: context.Canceled,
    62  			cause: context.Canceled,
    63  			str:   "context canceled",
    64  		},
    65  		{
    66  			input: errors.Wrapf(context.Canceled, "this is a test cancel"),
    67  			cause: context.Canceled,
    68  			str:   "this is a test cancel: context canceled",
    69  		},
    70  		{
    71  			input: context.DeadlineExceeded,
    72  			cause: context.DeadlineExceeded,
    73  			str:   "context deadline exceeded",
    74  		},
    75  		{
    76  			input: errors.Wrapf(context.DeadlineExceeded, "this is a test deadline exceeded"),
    77  			cause: context.DeadlineExceeded,
    78  			str:   "this is a test deadline exceeded: context deadline exceeded",
    79  		},
    80  	} {
    81  		t.Run(testcase.input.Error(), func(t *testing.T) {
    82  			t.Logf("input: %v", testcase.input)
    83  			gerr := ToGRPC(testcase.input)
    84  			t.Logf("grpc: %v", gerr)
    85  			ferr := FromGRPC(gerr)
    86  			t.Logf("recovered: %v", ferr)
    87  
    88  			if errors.Cause(ferr) != testcase.cause {
    89  				t.Fatalf("unexpected cause: %v != %v", errors.Cause(ferr), testcase.cause)
    90  			}
    91  			if !errors.Is(ferr, testcase.cause) {
    92  				t.Fatalf("unexpected cause: !errors.Is(%v, %v)", ferr, testcase.cause)
    93  			}
    94  
    95  			expected := testcase.str
    96  			if expected == "" {
    97  				expected = testcase.cause.Error()
    98  			}
    99  			if ferr.Error() != expected {
   100  				t.Fatalf("unexpected string: %q != %q", ferr.Error(), expected)
   101  			}
   102  		})
   103  	}
   104  
   105  }