go.uber.org/yarpc@v1.72.1/internal/shard/main_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
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     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 main
    22  
    23  import (
    24  	"bytes"
    25  	"testing"
    26  
    27  	"github.com/stretchr/testify/assert"
    28  )
    29  
    30  func TestDo(t *testing.T) {
    31  	tests := []struct {
    32  		Args       []string
    33  		WantOutput string
    34  		WantError  bool
    35  	}{
    36  		{
    37  			WantError: true,
    38  		},
    39  		{
    40  			Args:      []string{},
    41  			WantError: true,
    42  		},
    43  		{
    44  			Args:      []string{"1"},
    45  			WantError: true,
    46  		},
    47  		{
    48  			Args:      []string{"1", "x"},
    49  			WantError: true,
    50  		},
    51  		{
    52  			Args:      []string{"x", "1"},
    53  			WantError: true,
    54  		},
    55  		{
    56  			Args: []string{"1", "3"},
    57  		},
    58  		{
    59  			Args:       []string{"1", "3", "a"},
    60  			WantOutput: "a",
    61  		},
    62  		{
    63  			Args:       []string{"1", "3", "a", "b"},
    64  			WantOutput: "a",
    65  		},
    66  		{
    67  			Args:       []string{"1", "3", "a", "b", "c"},
    68  			WantOutput: "a",
    69  		},
    70  		{
    71  			Args:       []string{"1", "3", "a", "b", "c", "d"},
    72  			WantOutput: "a d",
    73  		},
    74  	}
    75  	for _, tt := range tests {
    76  		buffer := bytes.NewBuffer(nil)
    77  		err := do(tt.Args, buffer)
    78  		if tt.WantError {
    79  			assert.Error(t, err)
    80  		} else {
    81  			assert.NoError(t, err)
    82  		}
    83  		assert.Equal(t, tt.WantOutput, buffer.String())
    84  	}
    85  }