github.com/jerryclinesmith/packer@v0.3.7/packer/rpc/command_test.go (about)

     1  package rpc
     2  
     3  import (
     4  	"cgl.tideland.biz/asserts"
     5  	"github.com/mitchellh/packer/packer"
     6  	"net/rpc"
     7  	"testing"
     8  )
     9  
    10  type TestCommand struct {
    11  	runArgs   []string
    12  	runCalled bool
    13  	runEnv    packer.Environment
    14  }
    15  
    16  func (tc *TestCommand) Help() string {
    17  	return "bar"
    18  }
    19  
    20  func (tc *TestCommand) Run(env packer.Environment, args []string) int {
    21  	tc.runCalled = true
    22  	tc.runArgs = args
    23  	tc.runEnv = env
    24  	return 0
    25  }
    26  
    27  func (tc *TestCommand) Synopsis() string {
    28  	return "foo"
    29  }
    30  
    31  func TestRPCCommand(t *testing.T) {
    32  	assert := asserts.NewTestingAsserts(t, true)
    33  
    34  	// Create the command
    35  	command := new(TestCommand)
    36  
    37  	// Start the server
    38  	server := rpc.NewServer()
    39  	RegisterCommand(server, command)
    40  	address := serveSingleConn(server)
    41  
    42  	// Create the command client over RPC and run some methods to verify
    43  	// we get the proper behavior.
    44  	client, err := rpc.Dial("tcp", address)
    45  	assert.Nil(err, "should be no error")
    46  
    47  	clientComm := Command(client)
    48  
    49  	//Test Help
    50  	help := clientComm.Help()
    51  	assert.Equal(help, "bar", "helps hould be correct")
    52  
    53  	// Test run
    54  	runArgs := []string{"foo", "bar"}
    55  	testEnv := &testEnvironment{}
    56  	exitCode := clientComm.Run(testEnv, runArgs)
    57  	assert.Equal(command.runArgs, runArgs, "Correct args should be sent")
    58  	assert.Equal(exitCode, 0, "Exit code should be correct")
    59  
    60  	assert.NotNil(command.runEnv, "should have an env")
    61  	if command.runEnv != nil {
    62  		command.runEnv.Ui()
    63  		assert.True(testEnv.uiCalled, "UI should be called on env")
    64  	}
    65  
    66  	// Test Synopsis
    67  	synopsis := clientComm.Synopsis()
    68  	assert.Equal(synopsis, "foo", "Synopsis should be correct")
    69  }
    70  
    71  func TestCommand_Implements(t *testing.T) {
    72  	assert := asserts.NewTestingAsserts(t, true)
    73  
    74  	var r packer.Command
    75  	c := Command(nil)
    76  
    77  	assert.Implementor(c, &r, "should be a Builder")
    78  }