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Text file src/cmd/go/testdata/script/test_shuffle.txt

Documentation: cmd/go/testdata/script

     1  # Shuffle order of tests and benchmarks
     2  
     3  # Run tests
     4  go test -v foo_test.go
     5  ! stdout '-test.shuffle '
     6  stdout '(?s)TestOne(.*)TestTwo(.*)TestThree'
     7  
     8  go test -v -shuffle=off foo_test.go
     9  ! stdout '-test.shuffle '
    10  stdout '(?s)TestOne(.*)TestTwo(.*)TestThree'
    11  
    12  go test -v -shuffle=42 foo_test.go
    13  stdout '^-test.shuffle 42'
    14  stdout '(?s)TestThree(.*)TestOne(.*)TestTwo'
    15  
    16  go test -v -shuffle=43 foo_test.go
    17  stdout '^-test.shuffle 43'
    18  stdout '(?s)TestThree(.*)TestTwo(.*)TestOne'
    19  
    20  go test -v -shuffle=44 foo_test.go
    21  stdout '^-test.shuffle 44'
    22  stdout '(?s)TestOne(.*)TestThree(.*)TestTwo'
    23  
    24  go test -v -shuffle=0 foo_test.go
    25  stdout '^-test.shuffle 0'
    26  stdout '(?s)TestTwo(.*)TestOne(.*)TestThree'
    27  
    28  go test -v -shuffle -1 foo_test.go
    29  stdout '^-test.shuffle -1'
    30  stdout '(?s)TestThree(.*)TestOne(.*)TestTwo'
    31  
    32  go test -v -shuffle=on foo_test.go
    33  stdout '^-test.shuffle '
    34  stdout '(?s)=== RUN   TestOne(.*)--- PASS: TestOne'
    35  stdout '(?s)=== RUN   TestTwo(.*)--- PASS: TestTwo'
    36  stdout '(?s)=== RUN   TestThree(.*)--- PASS: TestThree'
    37  
    38  
    39  # Run tests and benchmarks
    40  go test -v -bench=. foo_test.go
    41  ! stdout '-test.shuffle '
    42  stdout '(?s)TestOne(.*)TestTwo(.*)TestThree(.*)BenchmarkOne(.*)BenchmarkTwo(.*)BenchmarkThree'
    43  
    44  go test -v -bench=. -shuffle=off foo_test.go
    45  ! stdout '-test.shuffle '
    46  stdout '(?s)TestOne(.*)TestTwo(.*)TestThree(.*)BenchmarkOne(.*)BenchmarkTwo(.*)BenchmarkThree'
    47  
    48  go test -v -bench=. -shuffle=42 foo_test.go
    49  stdout '^-test.shuffle 42'
    50  stdout '(?s)TestThree(.*)TestOne(.*)TestTwo(.*)BenchmarkThree(.*)BenchmarkOne(.*)BenchmarkTwo'
    51  
    52  go test -v -bench=. -shuffle=43 foo_test.go
    53  stdout '^-test.shuffle 43'
    54  stdout '(?s)TestThree(.*)TestTwo(.*)TestOne(.*)BenchmarkThree(.*)BenchmarkOne(.*)BenchmarkTwo'
    55  
    56  go test -v -bench=. -shuffle=44 foo_test.go
    57  stdout '^-test.shuffle 44'
    58  stdout '(?s)TestOne(.*)TestThree(.*)TestTwo(.*)BenchmarkTwo(.*)BenchmarkOne(.*)BenchmarkThree'
    59  
    60  go test -v -bench=. -shuffle=0 foo_test.go
    61  stdout '^-test.shuffle 0'
    62  stdout '(?s)TestTwo(.*)TestOne(.*)TestThree(.*)BenchmarkThree(.*)BenchmarkOne(.*)BenchmarkTwo'
    63  
    64  go test -v -bench=. -shuffle -1 foo_test.go
    65  stdout '^-test.shuffle -1'
    66  stdout '(?s)TestThree(.*)TestOne(.*)TestTwo(.*)BenchmarkOne(.*)BenchmarkThree(.*)BenchmarkTwo'
    67  
    68  go test -v -bench=. -shuffle=on foo_test.go
    69  stdout '^-test.shuffle '
    70  stdout '(?s)=== RUN   TestOne(.*)--- PASS: TestOne'
    71  stdout '(?s)=== RUN   TestTwo(.*)--- PASS: TestTwo'
    72  stdout '(?s)=== RUN   TestThree(.*)--- PASS: TestThree'
    73  stdout -count=2 'BenchmarkOne'
    74  stdout -count=2 'BenchmarkTwo'
    75  stdout -count=2 'BenchmarkThree'
    76  
    77  
    78  # When running go test -count=N, each of the N runs distinct runs should maintain the same
    79  # shuffled order of these tests.
    80  go test -v -shuffle=43 -count=4 foo_test.go
    81  stdout '^-test.shuffle 43'
    82  stdout '(?s)TestThree(.*)TestTwo(.*)TestOne(.*)TestThree(.*)TestTwo(.*)TestOne(.*)TestThree(.*)TestTwo(.*)TestOne(.*)TestThree(.*)TestTwo(.*)TestOne'
    83  
    84  go test -v -bench=. -shuffle=44 -count=2 foo_test.go
    85  stdout '^-test.shuffle 44'
    86  stdout '(?s)TestOne(.*)TestThree(.*)TestTwo(.*)TestOne(.*)TestThree(.*)TestTwo(.*)BenchmarkTwo(.*)BenchmarkOne(.*)BenchmarkThree(.*)'
    87  
    88  
    89  # The feature should work with test binaries as well
    90  go test -c
    91  exec ./m.test -test.shuffle=off
    92  ! stdout '^-test.shuffle '
    93  
    94  exec ./m.test -test.shuffle=on
    95  stdout '^-test.shuffle '
    96  
    97  exec ./m.test -test.v -test.bench=. -test.shuffle=0 foo_test.go
    98  stdout '^-test.shuffle 0'
    99  stdout '(?s)TestTwo(.*)TestOne(.*)TestThree(.*)BenchmarkThree(.*)BenchmarkOne(.*)BenchmarkTwo'
   100  
   101  exec ./m.test -test.v -test.bench=. -test.shuffle=123 foo_test.go
   102  stdout '^-test.shuffle 123'
   103  stdout '(?s)TestThree(.*)TestOne(.*)TestTwo(.*)BenchmarkThree(.*)BenchmarkTwo(.*)BenchmarkOne'
   104  
   105  exec ./m.test -test.v -test.bench=. -test.shuffle=-1 foo_test.go
   106  stdout '^-test.shuffle -1'
   107  stdout '(?s)TestThree(.*)TestOne(.*)TestTwo(.*)BenchmarkOne(.*)BenchmarkThree(.*)BenchmarkTwo'
   108  
   109  exec ./m.test -test.v -test.bench=. -test.shuffle=44 -test.count=2 foo_test.go
   110  stdout '^-test.shuffle 44'
   111  stdout '(?s)TestOne(.*)TestThree(.*)TestTwo(.*)TestOne(.*)TestThree(.*)TestTwo(.*)BenchmarkTwo(.*)BenchmarkOne(.*)BenchmarkThree(.*)'
   112  
   113  
   114  # Negative testcases for invalid input
   115  ! go test -shuffle -count=2
   116  stderr 'invalid value "-count=2" for flag -shuffle: -shuffle argument must be "on", "off", or an int64: strconv.ParseInt: parsing "-count=2": invalid syntax'
   117  
   118  ! go test -shuffle=
   119  stderr '(?s)invalid value "" for flag -shuffle: -shuffle argument must be "on", "off", or an int64: strconv.ParseInt: parsing "": invalid syntax'
   120  
   121  ! go test -shuffle=' '
   122  stderr '(?s)invalid value " " for flag -shuffle: -shuffle argument must be "on", "off", or an int64: strconv.ParseInt: parsing " ": invalid syntax'
   123  
   124  ! go test -shuffle=true
   125  stderr 'invalid value "true" for flag -shuffle: -shuffle argument must be "on", "off", or an int64: strconv.ParseInt: parsing "true": invalid syntax'
   126  
   127  ! go test -shuffle='abc'
   128  stderr 'invalid value "abc" for flag -shuffle: -shuffle argument must be "on", "off", or an int64: strconv.ParseInt: parsing "abc": invalid syntax'
   129  
   130  -- go.mod --
   131  module m
   132  
   133  go 1.16
   134  -- foo_test.go --
   135  package foo
   136  
   137  import "testing"
   138  
   139  func TestOne(t *testing.T)   {}
   140  func TestTwo(t *testing.T)   {}
   141  func TestThree(t *testing.T) {}
   142  
   143  func BenchmarkOne(b *testing.B)   {}
   144  func BenchmarkTwo(b *testing.B)   {}
   145  func BenchmarkThree(b *testing.B) {}
   146  
   147  -- foo.go --
   148  package foo
   149  

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