github.com/m3db/m3@v1.5.0/src/x/time/range_iter_test.go (about)

     1  // Copyright (c) 2016 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 time
    22  
    23  import (
    24  	"container/list"
    25  	"testing"
    26  	"time"
    27  
    28  	"github.com/stretchr/testify/require"
    29  )
    30  
    31  var (
    32  	testTimeRanges = []Range{
    33  		{Start: testStart, End: testStart.Add(time.Second)},
    34  		{Start: testStart.Add(2 * time.Second), End: testStart.Add(10 * time.Second)},
    35  		{Start: testStart.Add(20 * time.Second), End: testStart.Add(25 * time.Second)},
    36  	}
    37  )
    38  
    39  func getTestList() *list.List {
    40  	l := list.New()
    41  	for _, r := range testTimeRanges {
    42  		l.PushBack(r)
    43  	}
    44  	return l
    45  }
    46  
    47  func TestRangeIter(t *testing.T) {
    48  	it := newRangeIter(nil)
    49  	require.False(t, it.Next())
    50  
    51  	it = newRangeIter(getTestList())
    52  	for i := 0; i < len(testTimeRanges); i++ {
    53  		require.True(t, it.Next())
    54  		require.Equal(t, testTimeRanges[i], it.Value())
    55  	}
    56  	require.False(t, it.Next())
    57  
    58  }
    59  
    60  func TestRangeIterEOF(t *testing.T) {
    61  	it := newRangeIter(nil)
    62  	require.False(t, it.Next())
    63  
    64  	it = newRangeIter(getTestList())
    65  	var i int
    66  	for it.Next() {
    67  		require.Equal(t, testTimeRanges[i], it.Value())
    68  		i++
    69  	}
    70  	// Next() always returns falsy after hitting eof.
    71  	require.False(t, it.Next())
    72  }