github.com/m3db/m3@v1.5.0/src/query/models/query_context_test.go (about)

     1  // Copyright (c) 2019 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 models
    22  
    23  import (
    24  	"context"
    25  	"testing"
    26  
    27  	"github.com/stretchr/testify/assert"
    28  )
    29  
    30  func TestQueryContext_WithContext(t *testing.T) {
    31  	t.Run("passes along new context without modifying old", func(t *testing.T) {
    32  		qc := NoopQueryContext()
    33  
    34  		testKey := struct{}{}
    35  
    36  		newCtx := context.WithValue(qc.Ctx, testKey, "bar")
    37  
    38  		newQc := qc.WithContext(newCtx)
    39  
    40  		assert.Equal(t, "bar", newQc.Ctx.Value(testKey), "new context should be present")
    41  		assert.Equal(t, nil, qc.Ctx.Value(testKey), "old context should be the same")
    42  	})
    43  
    44  	t.Run("returns nil on nil", func(t *testing.T) {
    45  		var qc *QueryContext
    46  		assert.Nil(t, qc.WithContext(context.TODO()))
    47  	})
    48  }