verifier_test.go

Documentation: cloud.google.com/go/pubsub/internal/testutil

     1  // Copyright 2019 Google LLC
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package testutil_test
    16  
    17  import (
    18  	"testing"
    19  
    20  	"cloud.google.com/go/pubsub/internal/testutil"
    21  )
    22  
    23  func TestVerifyKeyOrdering(t *testing.T) {
    24  	for _, tc := range []struct {
    25  		name          string
    26  		publishedMsgs []testutil.OrderedKeyMsg
    27  		receivedMsgs  []testutil.OrderedKeyMsg
    28  		wantErr       bool
    29  	}{
    30  		{
    31  			name: "correct despite different ordering",
    32  			publishedMsgs: []testutil.OrderedKeyMsg{
    33  				{Key: "some-key-1", Data: "some-datum-1"},
    34  				{Key: "some-key-2", Data: "some-datum-1"},
    35  				{Key: "some-key-1", Data: "some-datum-2"},
    36  				{Key: "some-key-3", Data: "some-datum-1"},
    37  				{Key: "some-key-1", Data: "some-datum-3"},
    38  				{Key: "some-key-4", Data: "some-datum-1"},
    39  			},
    40  			receivedMsgs: []testutil.OrderedKeyMsg{
    41  				{Key: "some-key-2", Data: "some-datum-1"},
    42  				{Key: "some-key-1", Data: "some-datum-1"},
    43  				{Key: "some-key-3", Data: "some-datum-1"},
    44  				{Key: "some-key-4", Data: "some-datum-1"},
    45  				{Key: "some-key-1", Data: "some-datum-2"},
    46  				{Key: "some-key-1", Data: "some-datum-3"},
    47  			},
    48  			wantErr: false,
    49  		},
    50  		{
    51  			name: "received something we didnt publish",
    52  			publishedMsgs: []testutil.OrderedKeyMsg{
    53  				{Key: "some-key-1", Data: "some-datum-1"},
    54  			},
    55  			receivedMsgs: []testutil.OrderedKeyMsg{
    56  				{Key: "some-key-1", Data: "some-datum-2"},
    57  			},
    58  			wantErr: true,
    59  		},
    60  		{
    61  			name: "published message missing",
    62  			publishedMsgs: []testutil.OrderedKeyMsg{
    63  				{Key: "some-key-1", Data: "some-datum-1"},
    64  			},
    65  			receivedMsgs: []testutil.OrderedKeyMsg{},
    66  			wantErr:      true,
    67  		},
    68  		// TODO(deklerk): account for consistent redelivery.
    69  		//{
    70  		//	name: "correct despite consistent redlivery",
    71  		//	publishedMsgs: []testutil.OrderedKeyMsg{
    72  		//		{Key: "some-key-1", Data: "some-datum-1"},
    73  		//		{Key: "some-key-1", Data: "some-datum-2"},
    74  		//		{Key: "some-key-1", Data: "some-datum-3"},
    75  		//		{Key: "some-key-1", Data: "some-datum-4"},
    76  		//		{Key: "some-key-1", Data: "some-datum-5"},
    77  		//	},
    78  		//	// Messages 2 and 3 are redelivered twice.
    79  		//	receivedMsgs: []testutil.OrderedKeyMsg{
    80  		//		{Key: "some-key-1", Data: "some-datum-1"},
    81  		//		{Key: "some-key-1", Data: "some-datum-2"},
    82  		//		{Key: "some-key-1", Data: "some-datum-3"},
    83  		//		{Key: "some-key-1", Data: "some-datum-2"},
    84  		//		{Key: "some-key-1", Data: "some-datum-3"},
    85  		//		{Key: "some-key-1", Data: "some-datum-2"},
    86  		//		{Key: "some-key-1", Data: "some-datum-3"},
    87  		//		{Key: "some-key-1", Data: "some-datum-4"},
    88  		//		{Key: "some-key-1", Data: "some-datum-5"},
    89  		//	},
    90  		//	wantErr:      true,
    91  		//},
    92  	} {
    93  		t.Run(tc.name, func(t *testing.T) {
    94  			err := testutil.VerifyKeyOrdering(tc.publishedMsgs, tc.receivedMsgs)
    95  			if tc.wantErr {
    96  				if err == nil {
    97  					t.Fatal("wanted err, but got nil")
    98  				}
    99  			} else {
   100  				if err != nil {
   101  					t.Fatalf("wanted nil, got err:\n\t%v", err)
   102  				}
   103  			}
   104  		})
   105  	}
   106  }
   107
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