github.com/randomtask1155/cli@v6.41.1-0.20181227003417-a98eed78cbde+incompatible/util/checksum_test.go (about)

     1  package util_test
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"os"
     7  
     8  	. "code.cloudfoundry.org/cli/util"
     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("CheckSha1", func() {
    21  		Context("file doesn't exist", func() {
    22  			It("returns false", 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 false if sha1 doesn't match", func() {
    49  				checksum = NewSha1Checksum(f.Name())
    50  
    51  				Expect(checksum.CheckSha1("skj33933dabs2292391223aa393fjs92")).To(BeFalse())
    52  			})
    53  
    54  			It("returns true if sha1 matches", func() {
    55  				checksum = NewSha1Checksum(f.Name())
    56  
    57  				Expect(checksum.CheckSha1("a9993e364706816aba3e25717850c26c9cd0d89d")).To(BeTrue())
    58  			})
    59  		})
    60  
    61  	})
    62  
    63  	Describe("ComputeFileSha1", func() {
    64  		Context("If file does not exist", func() {
    65  			It("returns error", func() {
    66  				checksum = NewSha1Checksum("file/path/to/no/where")
    67  
    68  				sha1, err := checksum.ComputeFileSha1()
    69  				Expect(len(sha1)).To(Equal(0))
    70  				Expect(err).To(HaveOccurred())
    71  			})
    72  		})
    73  
    74  		Context("If file does exist", func() {
    75  			var (
    76  				f   *os.File
    77  				err error
    78  			)
    79  
    80  			BeforeEach(func() {
    81  				f, err = ioutil.TempFile("", "sha1_test_")
    82  				Expect(err).NotTo(HaveOccurred())
    83  				defer f.Close()
    84  				f.Write([]byte("abc"))
    85  			})
    86  
    87  			AfterEach(func() {
    88  				os.RemoveAll(f.Name())
    89  			})
    90  
    91  			It("returns the sha1 of a file", func() {
    92  				checksum = NewSha1Checksum(f.Name())
    93  
    94  				sha1, err := checksum.ComputeFileSha1()
    95  				Expect(err).NotTo(HaveOccurred())
    96  				Expect(len(sha1)).To(Equal(20))
    97  				Expect(fmt.Sprintf("%x", sha1)).To(Equal("a9993e364706816aba3e25717850c26c9cd0d89d"))
    98  			})
    99  		})
   100  
   101  	})
   102  })