[lxc] add basic tests

builder/lxc/builder_test.go

@@ -0,0 +1,56 @@
+package lxc
+
+import (
+	"testing"
+	"os"
+
+	"github.com/mitchellh/packer/packer"
+)
+
+func testConfig() map[string]interface{} {
+	return map[string]interface{}{
+		"config_file":               "builder_test.go",
+		"template_name":             "debian",
+		"template_environment_vars": "SUITE=jessie",
+	}
+}
+
+func TestBuilder_Foo(t *testing.T) {
+	if os.Getenv("PACKER_ACC") == "" {
+		t.Skip("This test is only run with PACKER_ACC=1")
+	}
+}
+
+func TestBuilderPrepare_ConfigFile(t *testing.T) {
+	var b Builder
+	// Good
+	config := testConfig()
+	warnings, err := b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	// Bad, missing config file
+	config = testConfig()
+	delete(config, "config_file")
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err == nil {
+		t.Fatalf("should have error")
+	}
+
+}
+
+func TestBuilder_ImplementsBuilder(t *testing.T) {
+	var raw interface{}
+	raw = &Builder{}
+	if _, ok := raw.(packer.Builder); !ok {
+		t.Fatalf("Builder should be a builder")
+	}
+}

builder/lxc/communicator.go

@@ -9,8 +9,8 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
-	"syscall"
 	"strings"
+	"syscall"
 )
 
 type LxcAttachCommunicator struct {
@@ -105,7 +105,7 @@ func (c *LxcAttachCommunicator) Download(src string, w io.Writer) error {
 }
 
 func (c *LxcAttachCommunicator) DownloadDir(src string, dst string, exclude []string) error {
-        return fmt.Errorf("DownloadDir is not implemented for lxc")
+	return fmt.Errorf("DownloadDir is not implemented for lxc")
 }
 
 func (c *LxcAttachCommunicator) Execute(commandString string) (*exec.Cmd, error) {

builder/lxc/communicator_test.go

@@ -0,0 +1,14 @@
+package lxc
+
+import (
+        "github.com/mitchellh/packer/packer"
+        "testing"
+)
+
+func TestCommunicator_ImplementsCommunicator(t *testing.T) {
+        var raw interface{}
+        raw = &LxcAttachCommunicator{}
+        if _, ok := raw.(packer.Communicator); !ok {
+                t.Fatalf("Communicator should be a communicator")
+        }
+}