github.com/llvm-mirror/llgo@v0.0.0-20190322182713-bf6f0a60fce1/third_party/gofrontend/libgo/go/internal/testenv/testenv.go (about)

     1  // Copyright 2015 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Package testenv provides information about what functionality
     6  // is available in different testing environments run by the Go team.
     7  //
     8  // It is an internal package because these details are specific
     9  // to the Go team's test setup (on build.golang.org) and not
    10  // fundamental to tests in general.
    11  package testenv
    12  
    13  import (
    14  	"os"
    15  	"runtime"
    16  	"strings"
    17  	"testing"
    18  )
    19  
    20  // Builder reports the name of the builder running this test
    21  // (for example, "linux-amd64" or "windows-386-gce").
    22  // If the test is not running on the build infrastructure,
    23  // Builder returns the empty string.
    24  func Builder() string {
    25  	return os.Getenv("GO_BUILDER_NAME")
    26  }
    27  
    28  // HasGoBuild reports whether the current system can build programs with ``go build''
    29  // and then run them with os.StartProcess or exec.Command.
    30  func HasGoBuild() bool {
    31  	switch runtime.GOOS {
    32  	case "android", "nacl":
    33  		return false
    34  	case "darwin":
    35  		if strings.HasPrefix(runtime.GOARCH, "arm") {
    36  			return false
    37  		}
    38  	}
    39  	// gccgo tests can not run "go build".
    40  	return false
    41  }
    42  
    43  // MustHaveGoBuild checks that the current system can build programs with ``go build''
    44  // and then run them with os.StartProcess or exec.Command.
    45  // If not, MustHaveGoBuild calls t.Skip with an explanation.
    46  func MustHaveGoBuild(t *testing.T) {
    47  	t.Skip("skipping test: 'go build' not available for gccgo tests")
    48  	if !HasGoBuild() {
    49  		t.Skipf("skipping test: 'go build' not available on %s/%s", runtime.GOOS, runtime.GOARCH)
    50  	}
    51  }
    52  
    53  // HasGoRun reports whether the current system can run programs with ``go run.''
    54  func HasGoRun() bool {
    55  	// For now, having go run and having go build are the same.
    56  	return HasGoBuild()
    57  }
    58  
    59  // MustHaveGoRun checks that the current system can run programs with ``go run.''
    60  // If not, MustHaveGoRun calls t.Skip with an explanation.
    61  func MustHaveGoRun(t *testing.T) {
    62  	t.Skip("skipping test: 'go run' not available for gccgo tests")
    63  	if !HasGoRun() {
    64  		t.Skipf("skipping test: 'go run' not available on %s/%s", runtime.GOOS, runtime.GOARCH)
    65  	}
    66  }
    67  
    68  // HasExec reports whether the current system can start new processes
    69  // using os.StartProcess or (more commonly) exec.Command.
    70  func HasExec() bool {
    71  	switch runtime.GOOS {
    72  	case "nacl":
    73  		return false
    74  	case "darwin":
    75  		if strings.HasPrefix(runtime.GOARCH, "arm") {
    76  			return false
    77  		}
    78  	}
    79  	return true
    80  }
    81  
    82  // MustHaveExec checks that the current system can start new processes
    83  // using os.StartProcess or (more commonly) exec.Command.
    84  // If not, MustHaveExec calls t.Skip with an explanation.
    85  func MustHaveExec(t *testing.T) {
    86  	if !HasExec() {
    87  		t.Skipf("skipping test: cannot exec subprocess on %s/%s", runtime.GOOS, runtime.GOARCH)
    88  	}
    89  }
    90  
    91  // HasExternalNetwork reports whether the current system can use
    92  // external (non-localhost) networks.
    93  func HasExternalNetwork() bool {
    94  	return !testing.Short()
    95  }
    96  
    97  // MustHaveExternalNetwork checks that the current system can use
    98  // external (non-localhost) networks.
    99  // If not, MustHaveExternalNetwork calls t.Skip with an explanation.
   100  func MustHaveExternalNetwork(t *testing.T) {
   101  	if testing.Short() {
   102  		t.Skipf("skipping test: no external network in -short mode")
   103  	}
   104  }