github.com/axw/juju@v0.0.0-20161005053422-4bd6544d08d4/cmd/plugins/juju-metadata/metadataplugin_test.go (about)

     1  // Copyright 2012, 2013 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package main
     5  
     6  import (
     7  	"flag"
     8  	"fmt"
     9  	"os"
    10  	"os/exec"
    11  	"strings"
    12  	stdtesting "testing"
    13  
    14  	jc "github.com/juju/testing/checkers"
    15  	"github.com/juju/utils/set"
    16  	gc "gopkg.in/check.v1"
    17  
    18  	"github.com/juju/juju/feature"
    19  	"github.com/juju/juju/testing"
    20  )
    21  
    22  func Test(t *stdtesting.T) {
    23  	gc.TestingT(t)
    24  }
    25  
    26  type MetadataSuite struct {
    27  	testing.FakeJujuXDGDataHomeSuite
    28  }
    29  
    30  var _ = gc.Suite(&MetadataSuite{})
    31  
    32  var metadataCommandNames = []string{
    33  	"add-image",
    34  	"delete-image",
    35  	"generate-image",
    36  	"generate-tools",
    37  	"help",
    38  	"list-images",
    39  	"sign",
    40  	"validate-images",
    41  	"validate-tools",
    42  }
    43  
    44  var (
    45  	flagRunMain = flag.Bool("run-main", false, "Run the application's main function for recursive testing")
    46  )
    47  
    48  // Reentrancy point for testing (something as close as possible to) the juju
    49  // tool itself.
    50  func TestRunMain(t *stdtesting.T) {
    51  	if *flagRunMain {
    52  		Main(flag.Args())
    53  	}
    54  }
    55  
    56  func badrun(c *gc.C, exit int, args ...string) string {
    57  	localArgs := append([]string{"-test.run", "TestRunMain", "-run-main", "--", "juju-metadata"}, args...)
    58  
    59  	ps := exec.Command(os.Args[0], localArgs...)
    60  	output, err := ps.CombinedOutput()
    61  	if exit != 0 {
    62  		c.Assert(err, gc.ErrorMatches, fmt.Sprintf("exit status %d", exit))
    63  	}
    64  	return string(output)
    65  }
    66  
    67  func getHelpCommandNames(c *gc.C) []string {
    68  	out := badrun(c, 0, "--help")
    69  	c.Log(out)
    70  	var names []string
    71  	commandHelpStrings := strings.SplitAfter(out, "commands:")
    72  	c.Assert(len(commandHelpStrings), gc.Equals, 2)
    73  	commandHelp := strings.TrimSpace(commandHelpStrings[1])
    74  	for _, line := range strings.Split(commandHelp, "\n") {
    75  		names = append(names, strings.TrimSpace(strings.Split(line, " - ")[0]))
    76  	}
    77  	return names
    78  }
    79  
    80  func (s *MetadataSuite) TestHelpCommands(c *gc.C) {
    81  	// Check that we have correctly registered all the sub commands
    82  	// by checking the help output.
    83  
    84  	// Remove add/list-image for the first test because the feature is not
    85  	// enabled by default.
    86  	devFeatures := set.NewStrings("add-image", "list-images", "delete-image")
    87  
    88  	// Remove features behind dev_flag for the first test since they are not
    89  	// enabled.
    90  	cmdSet := set.NewStrings(metadataCommandNames...).Difference(devFeatures)
    91  
    92  	// Test default commands.
    93  	// The names should be output in alphabetical order, so don't sort.
    94  	c.Assert(getHelpCommandNames(c), jc.SameContents, cmdSet.Values())
    95  
    96  	// Enable development features, and test again. We should now see the
    97  	// development commands.
    98  	s.SetFeatureFlags(feature.ImageMetadata)
    99  	c.Assert(getHelpCommandNames(c), jc.SameContents, metadataCommandNames)
   100  }
   101  
   102  func (s *MetadataSuite) assertHelpOutput(c *gc.C, cmd string) {
   103  	expected := fmt.Sprintf("Usage: juju metadata %s [options]", cmd)
   104  	out := badrun(c, 0, cmd, "--help")
   105  	lines := strings.Split(out, "\n")
   106  	c.Assert(lines[0], gc.Equals, expected)
   107  }
   108  
   109  func (s *MetadataSuite) TestHelpValidateImages(c *gc.C) {
   110  	s.assertHelpOutput(c, "validate-images")
   111  }
   112  
   113  func (s *MetadataSuite) TestHelpValidateTools(c *gc.C) {
   114  	s.assertHelpOutput(c, "validate-tools")
   115  }
   116  
   117  func (s *MetadataSuite) TestHelpGenerateImage(c *gc.C) {
   118  	s.assertHelpOutput(c, "generate-image")
   119  }
   120  
   121  func (s *MetadataSuite) TestHelpListImages(c *gc.C) {
   122  	s.SetFeatureFlags(feature.ImageMetadata)
   123  	s.assertHelpOutput(c, "list-images")
   124  }
   125  
   126  func (s *MetadataSuite) TestHelpAddImage(c *gc.C) {
   127  	s.SetFeatureFlags(feature.ImageMetadata)
   128  	s.assertHelpOutput(c, "add-image")
   129  }
   130  
   131  func (s *MetadataSuite) TestHelpDeleteImage(c *gc.C) {
   132  	s.SetFeatureFlags(feature.ImageMetadata)
   133  	s.assertHelpOutput(c, "delete-image")
   134  }