Merge pull request #23 from target/fix_scale_ut

Mock lock to fix Scale UT

Author: arpal7

src/test/java/com/target/devicemanager/components/scale/ScaleManagerTest.java

@@ -338,7 +338,7 @@ public void getStableWeight_ReturnsWeight() throws ScaleException, ExecutionExce
         //arrange
         FormattedWeight expected = new FormattedWeight(3);
         when(mockCompletableFutureFormattedWeight.get(30000, TimeUnit.MILLISECONDS)).thenReturn(expected);
-
+        when(mockScaleDevice.tryLock()).thenReturn(true);
         //act
         FormattedWeight actual = scaleManager.getStableWeight(mockCompletableFutureFormattedWeight);
 
@@ -348,12 +348,28 @@ public void getStableWeight_ReturnsWeight() throws ScaleException, ExecutionExce
         assertEquals(expected, actual);
     }
 
+    @Test
+    public void getStableWeight_ReturnsBusy() throws ScaleException, ExecutionException, InterruptedException, TimeoutException {
+        //arrange
+        when(mockScaleDevice.tryLock()).thenReturn(false);
+        //act
+        try{
+            scaleManager.getStableWeight(mockCompletableFutureFormattedWeight);
+        }
+        catch(ScaleException scaleException) {
+            //assert
+            assertEquals("DEVICE_BUSY", scaleException.getDeviceError().getCode());
+            return;
+        }
+        fail("Expected Exception, but got none");
+    }
+
     @Test
     public void getStableWeight_ThrowsExecutionException() throws ExecutionException, InterruptedException, TimeoutException {
         //arrange
         ExecutionException executionException = new ExecutionException(new JposException(ScaleConst.JPOS_ESCAL_UNDER_ZERO));
         when(mockCompletableFutureFormattedWeight.get(30000, TimeUnit.MILLISECONDS)).thenThrow(executionException);
-
+        when(mockScaleDevice.tryLock()).thenReturn(true);
         //act
         try {
             scaleManager.getStableWeight(mockCompletableFutureFormattedWeight);
@@ -372,7 +388,7 @@ public void getStableWeight_ThrowsInterruptedException() throws ExecutionExcepti
         //arrange
         InterruptedException interruptedException = new InterruptedException();
         when(mockCompletableFutureFormattedWeight.get(30000, TimeUnit.MILLISECONDS)).thenThrow(interruptedException);
-
+        when(mockScaleDevice.tryLock()).thenReturn(true);
         //act
         try {
             scaleManager.getStableWeight(mockCompletableFutureFormattedWeight);
@@ -391,7 +407,7 @@ public void getStableWeight_ThrowsTimeoutException() throws ExecutionException,
         //arrange
         TimeoutException timeoutException = new TimeoutException();
         when(mockCompletableFutureFormattedWeight.get(30000, TimeUnit.MILLISECONDS)).thenThrow(timeoutException);
-
+        when(mockScaleDevice.tryLock()).thenReturn(true);
         //act
         try {
             scaleManager.getStableWeight(mockCompletableFutureFormattedWeight);