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

Documentation: cmd/go/testdata/script

     1  env GO111MODULE=on
     2  
     3  [short] skip
     4  
     5  # Arguments after the flag terminator should be ignored.
     6  # If we pass '-- -test.v', we should not get verbose output
     7  # *and* output from the test should not be echoed.
     8  go test ./x -- -test.v
     9  stdout '\Aok\s+example.com/x\s+[0-9.s]+\n\z'
    10  ! stderr .
    11  
    12  # For backward-compatibility with previous releases of the 'go' command,
    13  # arguments that appear after unrecognized flags should not be treated
    14  # as packages, even if they are unambiguously not arguments to flags.
    15  # Even though ./x looks like a package path, the real package should be
    16  # the implicit '.'.
    17  ! go test --answer=42 ./x
    18  stderr '^no Go files in .+$'
    19  ! stderr '/x'
    20  
    21  # However, *flags* that appear after unrecognized flags should still be
    22  # interpreted as flags, under the (possibly-erroneous) assumption that
    23  # unrecognized flags are non-boolean.
    24  
    25  go test -v -x ./x -timeout 24h -boolflag=true foo -timeout 25h
    26  stdout 'args: foo -timeout 25h'
    27  stdout 'timeout: 24h0m0s$'  # -timeout is unambiguously not a flag, so the real flag wins.
    28  
    29  go test -v -x ./x -timeout 24h -boolflag foo -timeout 25h
    30  stdout 'args: foo -test\.timeout=25h0m0s'  # For legacy reasons, '-timeout ' is erroneously rewritten to -test.timeout; see https://golang.org/issue/40763.
    31  stdout 'timeout: 24h0m0s$'  # Actual flag wins.
    32  
    33  go test -v -x ./x -timeout 24h -stringflag foo -timeout 25h
    34  stdout 'args: $'
    35  stdout 'timeout: 25h0m0s$'  # Later flag wins.
    36  
    37  # An explicit '-outputdir=' argument should set test.outputdir
    38  # to the 'go' command's working directory, not zero it out
    39  # for the test binary.
    40  go test -x -coverprofile=cover.out '-outputdir=' ./x
    41  stderr '-test.outputdir=[^ ]'
    42  exists ./cover.out
    43  ! exists ./x/cover.out
    44  
    45  # Test flags from GOFLAGS should be forwarded to the test binary,
    46  # with the 'test.' prefix in the GOFLAGS entry...
    47  env GOFLAGS='-test.timeout=24h0m0s -count=1'
    48  go test -v -x ./x
    49  stdout 'timeout: 24h0m0s$'
    50  stderr '-test.count=1'
    51  
    52  # ...or without.
    53  env GOFLAGS='-timeout=24h0m0s -count=1'
    54  go test -v -x ./x
    55  stdout 'timeout: 24h0m0s$'
    56  stderr '-test.count=1'
    57  
    58  # Arguments from the command line should override GOFLAGS...
    59  go test -v -x -timeout=25h0m0s ./x
    60  stdout 'timeout: 25h0m0s$'
    61  stderr '-test.count=1'
    62  
    63  # ...even if they use a different flag name.
    64  go test -v -x -test.timeout=26h0m0s ./x
    65  stdout 'timeout: 26h0m0s$'
    66  stderr '-test\.timeout=26h0m0s'
    67  ! stderr 'timeout=24h0m0s'
    68  stderr '-test.count=1'
    69  
    70  # Invalid flags should be reported exactly once.
    71  ! go test -covermode=walrus ./x
    72  stderr -count=1 'invalid value "walrus" for flag -covermode: valid modes are .*$'
    73  stderr '^usage: go test .*$'
    74  stderr '^Run ''go help test'' and ''go help testflag'' for details.$'
    75  
    76  # Passing -help to the test binary should show flag help.
    77  go test ./x -args -help
    78  stdout 'usage_message'
    79  
    80  # -covermode, -coverpkg, and -coverprofile should imply -cover
    81  go test -covermode=set ./x
    82  stdout '\s+coverage:\s+'
    83  
    84  go test -coverpkg=encoding/binary ./x
    85  stdout '\s+coverage:\s+'
    86  
    87  go test -coverprofile=cover.out ./x
    88  stdout '\s+coverage:\s+'
    89  exists ./cover.out
    90  rm ./cover.out
    91  
    92  # -*profile and -trace flags should force output to the current working directory
    93  # or -outputdir, not the directory containing the test.
    94  
    95  go test -memprofile=mem.out ./x
    96  exists ./mem.out
    97  rm ./mem.out
    98  
    99  go test -trace=trace.out ./x
   100  exists ./trace.out
   101  rm ./trace.out
   102  
   103  # Relative paths with -outputdir should be relative to the go command's working
   104  # directory, not the directory containing the test.
   105  mkdir profiles
   106  go test -memprofile=mem.out -outputdir=./profiles ./x
   107  exists ./profiles/mem.out
   108  rm profiles
   109  
   110  -- go.mod --
   111  module example.com
   112  go 1.14
   113  -- x/x_test.go --
   114  package x
   115  
   116  import (
   117  	"flag"
   118  	"strings"
   119  	"testing"
   120  )
   121  
   122  var _ = flag.String("usage_message", "", "dummy flag to check usage message")
   123  var boolflag = flag.Bool("boolflag", false, "ignored boolean flag")
   124  var stringflag = flag.String("stringflag", "", "ignored string flag")
   125  
   126  func TestLogTimeout(t *testing.T) {
   127  	t.Logf("timeout: %v", flag.Lookup("test.timeout").Value)
   128  }
   129  
   130  func TestLogArgs(t *testing.T) {
   131  	t.Logf("args: %s", strings.Join(flag.Args(), " "))
   132  }
   133  

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