gitlab.com/beacon-software/gadget@v0.0.0-20181217202115-54565ea1ed5e/collection/specialized/requeingqueue_test.go (about)

     1  package specialized
     2  
     3  import (
     4  	"testing"
     5  
     6  	"github.com/stretchr/testify/assert"
     7  
     8  	"gitlab.com/beacon-software/gadget/collection"
     9  )
    10  
    11  func TestReuqueingQueue(t *testing.T) {
    12  	assert := assert.New(t)
    13  	rqq := NewRequeueingQueue()
    14  	assert.Equal(0, rqq.Size())
    15  	actual, err := rqq.Peek()
    16  	assert.Nil(actual)
    17  	assert.Error(err, collection.NewEmptyListError().Error())
    18  
    19  	actual, err = rqq.Pop()
    20  	assert.Nil(actual)
    21  	assert.Error(err, collection.NewEmptyListError().Error())
    22  	assert.Equal(0, rqq.Size())
    23  
    24  	rqq.Push("fun")
    25  	rqq.Push("super")
    26  	rqq.Push("is")
    27  	rqq.Push("go")
    28  
    29  	actual, err = rqq.Peek()
    30  	assert.NoError(err)
    31  	assert.Equal("go", actual)
    32  	assert.Equal(4, rqq.Size())
    33  
    34  	actual, err = rqq.Pop()
    35  	assert.NoError(err)
    36  	assert.Equal("go", actual)
    37  	assert.Equal(4, rqq.Size())
    38  
    39  	actual, err = rqq.Pop()
    40  	assert.NoError(err)
    41  	assert.Equal("is", actual)
    42  	assert.Equal(4, rqq.Size())
    43  
    44  	actual, err = rqq.Pop()
    45  	assert.NoError(err)
    46  	assert.Equal("super", actual)
    47  	assert.Equal(4, rqq.Size())
    48  
    49  	actual, err = rqq.Pop()
    50  	assert.NoError(err)
    51  	assert.Equal("fun", actual)
    52  	assert.Equal(4, rqq.Size())
    53  
    54  	actual, err = rqq.Pop()
    55  	assert.NoError(err)
    56  	assert.Equal("go", actual)
    57  	assert.Equal(4, rqq.Size())
    58  }