Fix the CTS print tests.

Only run these test if the device says it supports
printing. These test hang on wear devices otherwise.

Bug: 18463847
Change-Id: I967c92af3042795fa6a311ab607ace8c02777ec8

tests/tests/print/src/android/print/cts/BasePrintTest.java

@@ -25,6 +25,7 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
 import android.content.Context;
+import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.pdf.PdfDocument;
@@ -458,4 +459,8 @@ public abstract class BasePrintTest extends UiAutomatorTestCase {
             }
         }
     }
+
+    protected boolean supportsPrinting() {
+        return getActivity().getPackageManager().hasSystemFeature(PackageManager.FEATURE_PRINTING);
+    }
 }

tests/tests/print/src/android/print/cts/PageRangeAdjustmentTest.java

@@ -62,6 +62,10 @@ public class PageRangeAdjustmentTest extends BasePrintTest {
     private static final String FIRST_PRINTER = "First printer";
 
     public void testAllPagesWantedAndAllPagesWritten() throws Exception {
+        if (!supportsPrinting()) {
+            return;
+        }
+
         // Create a callback for the target print service.
         PrintServiceCallbacks firstServiceCallbacks = createMockPrintServiceCallbacks(
             new Answer<PrinterDiscoverySessionCallbacks>() {
@@ -161,6 +165,10 @@ public class PageRangeAdjustmentTest extends BasePrintTest {
     }
 
     public void testSomePagesWantedAndAllPagesWritten() throws Exception {
+        if (!supportsPrinting()) {
+            return;
+        }
+
         // Create a callback for the target print service.
         PrintServiceCallbacks firstServiceCallbacks = createMockPrintServiceCallbacks(
             new Answer<PrinterDiscoverySessionCallbacks>() {
@@ -269,6 +277,10 @@ public class PageRangeAdjustmentTest extends BasePrintTest {
     }
 
     public void testSomePagesWantedAndSomeMorePagesWritten() throws Exception {
+        if (!supportsPrinting()) {
+            return;
+        }
+
         // Create a callback for the target print service.
         PrintServiceCallbacks firstServiceCallbacks = createMockPrintServiceCallbacks(
             new Answer<PrinterDiscoverySessionCallbacks>() {
@@ -393,6 +405,10 @@ public class PageRangeAdjustmentTest extends BasePrintTest {
     }
 
     public void testSomePagesWantedAndNotWritten() throws Exception {
+        if (!supportsPrinting()) {
+            return;
+        }
+
         // Create a callback for the target print service.
         PrintServiceCallbacks firstServiceCallbacks = createMockPrintServiceCallbacks(
             new Answer<PrinterDiscoverySessionCallbacks>() {
@@ -481,6 +497,10 @@ public class PageRangeAdjustmentTest extends BasePrintTest {
     }
 
     public void testWantedPagesAlreadyWrittenForPreview() throws Exception {
+        if (!supportsPrinting()) {
+            return;
+        }
+
         // Create a callback for the target print service.
         PrintServiceCallbacks firstServiceCallbacks = createMockPrintServiceCallbacks(
             new Answer<PrinterDiscoverySessionCallbacks>() {