diff --git a/plugin_test.go b/plugin_test.go
index 3920007..06fdfa8 100644
--- a/plugin_test.go
+++ b/plugin_test.go
@@ -20,7 +20,6 @@ func Test_pkValidate(t *testing.T) {
 			args: args{
 				config: Config{
 					Template: "foo.json",
-					Actions:  []string{"validate"},
 				},
 			},
 			want: exec.Command("packer", "validate", "foo.json"),
@@ -30,7 +29,6 @@ func Test_pkValidate(t *testing.T) {
 			args: args{
 				config: Config{
 					Template: "foo.json",
-					Actions:  []string{"validate"},
 					Vars: map[string]string{
 						"foo": "bar",
 					},
@@ -44,7 +42,6 @@ func Test_pkValidate(t *testing.T) {
 			args: args{
 				config: Config{
 					Template:   "foo.json",
-					Actions:    []string{"validate"},
 					Except:     []string{"foo", "bar"},
 					Only:       []string{"a", "b"},
 					SyntaxOnly: true,
@@ -62,3 +59,57 @@ func Test_pkValidate(t *testing.T) {
 		})
 	}
 }
+
+func Test_pkBuild(t *testing.T) {
+	type args struct {
+		config Config
+	}
+	tests := []struct {
+		name string
+		args args
+		want *exec.Cmd
+	}{
+		{
+			name: "default build command",
+			args: args{
+				config: Config{
+					Template: "foo.json",
+				},
+			},
+			want: exec.Command("packer", "build", "foo.json"),
+		},
+		{
+			name: "default build vars flag",
+			args: args{
+				config: Config{
+					Template: "foo.json",
+					Vars: map[string]string{
+						"foo": "bar",
+					},
+					VarFiles: []string{"bar.json"},
+				},
+			},
+			want: exec.Command("packer", "build", "-var-file", "bar.json", "-var", "foo=bar", "foo.json"),
+		},
+		{
+			name: "add Parallel, Color and debug flag",
+			args: args{
+				config: Config{
+					Template: "foo.json",
+					Parallel: true,
+					Color:    true,
+					Debug:    true,
+				},
+			},
+			want: exec.Command("packer", "build", "-parallel=true", "-color=true", "-debug", "foo.json"),
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			if got := pkBuild(tt.args.config); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("pkBuild() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}