go.uber.org/yarpc@v1.72.1/encoding/raw/inbound_test.go (about)

     1  // Copyright (c) 2022 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
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     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package raw
    22  
    23  import (
    24  	"context"
    25  	"errors"
    26  	"fmt"
    27  	"testing"
    28  
    29  	"github.com/stretchr/testify/assert"
    30  	"github.com/stretchr/testify/require"
    31  	"github.com/uber/tchannel-go/testutils/testreader"
    32  	"go.uber.org/yarpc"
    33  	"go.uber.org/yarpc/api/transport"
    34  	"go.uber.org/yarpc/api/transport/transporttest"
    35  	"go.uber.org/yarpc/internal/testtime"
    36  )
    37  
    38  func TestRawHandler(t *testing.T) {
    39  	// handler to use for test cases where the handler should not be called
    40  	handlerNotCalled :=
    41  		func(ctx context.Context, body []byte) ([]byte, error) {
    42  			t.Errorf("unexpected call handle(%v)", body)
    43  			return nil, fmt.Errorf("unexpected call handle(%v)", body)
    44  		}
    45  
    46  	tests := []struct {
    47  		procedure  string
    48  		headers    transport.Headers
    49  		bodyChunks [][]byte
    50  		handler    UnaryHandler
    51  
    52  		wantErr     string
    53  		wantHeaders transport.Headers
    54  		wantBody    []byte
    55  	}{
    56  		{
    57  			procedure: "foo",
    58  			bodyChunks: [][]byte{
    59  				{1, 2, 3},
    60  				{4, 5, 6},
    61  			},
    62  			handler: func(ctx context.Context, body []byte) ([]byte, error) {
    63  				assert.Equal(t, "foo", yarpc.CallFromContext(ctx).Procedure())
    64  				assert.Equal(t, []byte{1, 2, 3, 4, 5, 6}, body)
    65  				return []byte("hello"), nil
    66  			},
    67  			wantBody: []byte("hello"),
    68  		},
    69  		{
    70  			procedure: "foo",
    71  			bodyChunks: [][]byte{
    72  				{1, 2, 3},
    73  				{4, 5, 6},
    74  			},
    75  			handler: func(ctx context.Context, body []byte) ([]byte, error) {
    76  				assert.Equal(t, "foo", yarpc.CallFromContext(ctx).Procedure())
    77  				assert.Equal(t, []byte{1, 2, 3, 4, 5, 6}, body)
    78  				return []byte("hello"), errors.New("bar")
    79  			},
    80  			wantBody: []byte("hello"),
    81  			wantErr:  "bar",
    82  		},
    83  		{
    84  			procedure: "bar",
    85  			bodyChunks: [][]byte{
    86  				{1, 2, 3},
    87  				nil, // triggers a read error
    88  				{4, 5, 6},
    89  			},
    90  			handler: handlerNotCalled,
    91  			wantErr: "error set by user",
    92  			// TODO consistent error messages between languages
    93  		},
    94  		{
    95  			procedure:  "baz",
    96  			bodyChunks: [][]byte{},
    97  			handler: func(ctx context.Context, body []byte) ([]byte, error) {
    98  				assert.Equal(t, []byte{}, body)
    99  				return nil, fmt.Errorf("great sadness")
   100  			},
   101  			wantErr: "great sadness",
   102  		},
   103  		{
   104  			procedure:  "responseHeaders",
   105  			bodyChunks: [][]byte{},
   106  			handler: func(ctx context.Context, body []byte) ([]byte, error) {
   107  				require.NoError(t, yarpc.CallFromContext(ctx).WriteResponseHeader("hello", "world"))
   108  				return []byte{}, nil
   109  			},
   110  			wantHeaders: transport.NewHeaders().With("hello", "world"),
   111  		},
   112  	}
   113  
   114  	for _, tt := range tests {
   115  		handler := rawUnaryHandler{tt.handler}
   116  		resw := new(transporttest.FakeResponseWriter)
   117  
   118  		writer, chunkReader := testreader.ChunkReader()
   119  		for _, chunk := range tt.bodyChunks {
   120  			writer <- chunk
   121  		}
   122  		close(writer)
   123  
   124  		ctx, cancel := context.WithTimeout(context.Background(), testtime.Second)
   125  		defer cancel()
   126  
   127  		err := handler.Handle(ctx, &transport.Request{
   128  			Procedure: tt.procedure,
   129  			Headers:   tt.headers,
   130  			Encoding:  "raw",
   131  			Body:      chunkReader,
   132  		}, resw)
   133  
   134  		if tt.wantErr != "" {
   135  			if assert.Error(t, err) {
   136  				assert.Equal(t, err.Error(), tt.wantErr)
   137  			}
   138  		} else {
   139  			assert.NoError(t, err)
   140  		}
   141  		assert.Equal(t, tt.wantHeaders, resw.Headers)
   142  		if tt.wantBody != nil {
   143  			assert.Equal(t, tt.wantBody, resw.Body.Bytes(),
   144  				"body does not match for %s", tt.procedure)
   145  		}
   146  	}
   147  }