Add unit tests for DocumentStack. (a4a23b07) · Commits · e / os / android_packages_apps_DocumentsUI

src/com/android/documentsui/base/DocumentStack.java

+4 −2

Original line number	Diff line number	Diff line
		@@ -33,6 +33,8 @@ import java.util.Collection;
		import java.util.LinkedList;
		import java.util.List;

		import javax.annotation.Nullable;

		/**
		* Representation of a stack of {@link DocumentInfo}, usually the result of a
		* user-driven traversal.
		@@ -45,7 +47,7 @@ public class DocumentStack implements Durable, Parcelable {
		private static final int VERSION_ADD_ROOT = 2;

		private LinkedList<DocumentInfo> mList;
		private RootInfo mRoot;
		private @Nullable RootInfo mRoot;

		private boolean mInitialRootChanged;
		private boolean mInitialDocChanged;
		@@ -90,7 +92,7 @@ public class DocumentStack implements Durable, Parcelable {
		mRoot = src.mRoot;
		}

		public RootInfo getRoot() {
		public @Nullable RootInfo getRoot() {
		return mRoot;
		}

tests/unit/com/android/documentsui/base/DocumentStackTest.java

+107 −7

Original line number	Diff line number	Diff line
		@@ -18,8 +18,10 @@ package com.android.documentsui.base;

		import static junit.framework.Assert.assertEquals;
		import static junit.framework.Assert.assertFalse;
		import static junit.framework.TestCase.assertNull;
		import static junit.framework.TestCase.assertTrue;

		import android.net.Uri;
		import android.support.test.filters.SmallTest;
		import android.support.test.runner.AndroidJUnit4;

		@@ -30,15 +32,25 @@ import org.junit.runner.RunWith;
		@RunWith(AndroidJUnit4.class)
		@SmallTest
		public class DocumentStackTest {
		private static final RootInfo ROOT_1;
		private static final RootInfo ROOT_2;

		private static final DocumentInfo DIR_1;
		private static final DocumentInfo DIR_2;

		private DocumentStack mStack;

		static {
		ROOT_1 = new RootInfo();
		ROOT_1.rootId = "home";
		ROOT_2 = new RootInfo();
		ROOT_2.rootId = "downloads";

		DIR_1 = new DocumentInfo();
		DIR_1.derivedUri = Uri.parse("content://authority/document/firstId");
		DIR_1.displayName = "firstDirectory";
		DIR_2 = new DocumentInfo();
		DIR_2.derivedUri = Uri.parse("content://authority/document/secondId");
		DIR_2.displayName = "secondDirectory";
		}

		@@ -50,13 +62,10 @@ public class DocumentStackTest {
		@Test
		public void testInitialStateEmpty() {
		assertFalse(mStack.hasLocationChanged());
		}

		@Test
		public void testPushDocument_ChangesLocation() {
		mStack.push(DIR_1);
		mStack.push(DIR_2);
		assertTrue(mStack.hasLocationChanged());
		assertFalse(mStack.hasInitialLocationChanged());
		assertTrue(mStack.isEmpty());
		assertEquals(0, mStack.size());
		assertNull(mStack.getRoot());
		}

		@Test
		@@ -73,4 +82,95 @@ public class DocumentStackTest {
		mStack.pop();
		assertEquals(DIR_1, mStack.peek());
		}

		@Test
		public void testGetDocument() {
		mStack.push(DIR_1);
		mStack.push(DIR_2);

		assertEquals(DIR_1, mStack.get(0));
		assertEquals(DIR_2, mStack.get(1));
		}

		@Test
		public void testChangeRoot() {
		mStack.changeRoot(ROOT_1);

		assertEquals(ROOT_1, mStack.getRoot());
		}

		@Test
		public void testChangeRoot_ClearsStack() {
		mStack.push(DIR_1);

		mStack.changeRoot(ROOT_1);

		assertTrue(mStack.isEmpty());
		assertEquals(0, mStack.size());
		}

		@Test
		public void testReset() {
		mStack.changeRoot(ROOT_1);
		mStack.push(DIR_1);

		mStack.reset();

		assertNull(mStack.getRoot());
		assertTrue(mStack.isEmpty());
		assertEquals(0, mStack.size());
		}

		@Test
		public void testCopyConstructor() {
		mStack.changeRoot(ROOT_1);
		mStack.push(DIR_1);
		mStack.push(DIR_2);

		DocumentStack stack = new DocumentStack(mStack);

		assertEquals(2, stack.size());
		assertEquals(DIR_1, stack.get(0));
		assertEquals(DIR_2, stack.get(1));
		assertEquals(ROOT_1, stack.getRoot());
		}

		@Test
		public void testCopyConstructor_MakesDeepCopy() {
		mStack.changeRoot(ROOT_1);
		mStack.push(DIR_1);
		mStack.push(DIR_2);

		DocumentStack stack = new DocumentStack(mStack);

		mStack.changeRoot(ROOT_2);

		assertEquals(2, stack.size());
		assertEquals(DIR_1, stack.get(0));
		assertEquals(DIR_2, stack.get(1));
		assertEquals(ROOT_1, stack.getRoot());
		}

		@Test
		public void testPushDocument_ChangesLocation() {
		mStack.push(DIR_1);

		assertTrue(mStack.hasLocationChanged());
		}

		@Test
		public void testPushDocument_ChangesInitialLocation() {
		mStack.push(DIR_1);
		mStack.push(DIR_2);

		assertTrue(mStack.hasInitialLocationChanged());
		}

		@Test
		public void testChangeRoot_ChangesInitialLocation() {
		mStack.changeRoot(ROOT_1);
		mStack.changeRoot(ROOT_2);

		assertTrue(mStack.hasInitialLocationChanged());
		}
		}