github.com/jasonkeene/cli@v6.14.1-0.20160816203908-ca5715166dfb+incompatible/utils/checksum_test.go (about)

     1  package utils_test
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"os"
     7  
     8  	. "github.com/cloudfoundry/cli/utils"
     9  
    10  	. "github.com/onsi/ginkgo"
    11  	. "github.com/onsi/gomega"
    12  )
    13  
    14  var _ = Describe("Sha1Checksum", func() {
    15  
    16  	var (
    17  		checksum Sha1Checksum
    18  	)
    19  
    20  	Describe("ComputeFileSha1", func() {
    21  		Context("If file does not exist", func() {
    22  			It("returns error", func() {
    23  				checksum = NewSha1Checksum("file/path/to/no/where")
    24  
    25  				sha1, err := checksum.ComputeFileSha1()
    26  				Expect(len(sha1)).To(Equal(0))
    27  				Expect(err).To(HaveOccurred())
    28  			})
    29  		})
    30  
    31  		Context("If file does exist", func() {
    32  			var (
    33  				f   *os.File
    34  				err error
    35  			)
    36  
    37  			BeforeEach(func() {
    38  				f, err = ioutil.TempFile("", "sha1_test_")
    39  				Expect(err).NotTo(HaveOccurred())
    40  				defer f.Close()
    41  				f.Write([]byte("abc"))
    42  			})
    43  
    44  			AfterEach(func() {
    45  				os.RemoveAll(f.Name())
    46  			})
    47  
    48  			It("returns the sha1 of a file", func() {
    49  				checksum = NewSha1Checksum(f.Name())
    50  
    51  				sha1, err := checksum.ComputeFileSha1()
    52  				Expect(err).NotTo(HaveOccurred())
    53  				Expect(len(sha1)).To(Equal(20))
    54  				Expect(fmt.Sprintf("%x", sha1)).To(Equal("a9993e364706816aba3e25717850c26c9cd0d89d"))
    55  			})
    56  		})
    57  
    58  	})
    59  
    60  	Describe("CheckSha1", func() {
    61  		Context("file doesn't exist", func() {
    62  			It("returns false", func() {
    63  				checksum = NewSha1Checksum("file/path/to/no/where")
    64  
    65  				sha1, err := checksum.ComputeFileSha1()
    66  				Expect(len(sha1)).To(Equal(0))
    67  				Expect(err).To(HaveOccurred())
    68  			})
    69  		})
    70  
    71  		Context("If file does exist", func() {
    72  			var (
    73  				f   *os.File
    74  				err error
    75  			)
    76  
    77  			BeforeEach(func() {
    78  				f, err = ioutil.TempFile("", "sha1_test_")
    79  				Expect(err).NotTo(HaveOccurred())
    80  				defer f.Close()
    81  				f.Write([]byte("abc"))
    82  			})
    83  
    84  			AfterEach(func() {
    85  				os.RemoveAll(f.Name())
    86  			})
    87  
    88  			It("returns false if sha1 doesn't match", func() {
    89  				checksum = NewSha1Checksum(f.Name())
    90  
    91  				Expect(checksum.CheckSha1("skj33933dabs2292391223aa393fjs92")).To(BeFalse())
    92  			})
    93  
    94  			It("returns true if sha1 matches", func() {
    95  				checksum = NewSha1Checksum(f.Name())
    96  
    97  				Expect(checksum.CheckSha1("a9993e364706816aba3e25717850c26c9cd0d89d")).To(BeTrue())
    98  			})
    99  		})
   100  
   101  	})
   102  })