Add tests for stm GO library

Steps to reproduce:
    # Compile tests.
    GOARCH=arm GOARM=7 GOOS=linux ginkgo build ./...
    # Copy stm/stm.test to MuxPI.
    # Run on MuxPI.
    ./stm.test -ginkgo.v

Tests fail if there is no "OK" response. Person running them should also
observe OLED display, blinking LEDs and relay switching (it is audible).

Change-Id: I86992a1356382645d156053c15d14d9a57603b71

stm/stm_suite_test.go

@@ -0,0 +1,29 @@
+/*
+ *  Copyright (c) 2017 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License
+ */
+
+package stm_test
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"testing"
+)
+
+func TestStm(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Stm Suite")
+}

stm/stm_test.go

@@ -0,0 +1,82 @@
+/*
+ *  Copyright (c) 2017 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License
+ */
+
+package stm_test
+
+import (
+	"time"
+
+	. "git.tizen.org/tools/muxpi/stm"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Stm", func() {
+	BeforeEach(func() {
+		err := Open()
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	AfterEach(func() {
+		err := Close()
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("should switch to DUT", func() {
+		err := DUT()
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("should do power tick", func() {
+		err := PowerTick(time.Second)
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("should switch to TS", func() {
+		err := TS()
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("should clear the display", func() {
+		err := ClearDisplay()
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("should print text on the display", func() {
+		err := PrintText(0, 0, Foreground, "test text")
+		Expect(err).ToNot(HaveOccurred())
+		time.Sleep(2 * time.Second)
+		err = PrintText(0, 0, Background, "test text")
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("should blink the left LED", func() {
+		err := SetLED(LED1, 255, 255, 255)
+		Expect(err).ToNot(HaveOccurred())
+		time.Sleep(2 * time.Second)
+		err = SetLED(LED1, 0, 0, 0)
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("should blink the right LED", func() {
+		err := SetLED(LED2, 255, 255, 255)
+		Expect(err).ToNot(HaveOccurred())
+		time.Sleep(2 * time.Second)
+		err = SetLED(LED2, 0, 0, 0)
+		Expect(err).ToNot(HaveOccurred())
+	})
+})