1 files changed, 94 insertions, 0 deletions
diff --git a/tests/unit/src/com/android/tv/common/ui/setup/leanback/PagingIndicatorTest.java b/tests/unit/src/com/android/tv/common/ui/setup/leanback/PagingIndicatorTest.java
new file mode 100644
index 00000000..b342de66
--- /dev/null
+++ b/tests/unit/src/com/android/tv/common/ui/setup/leanback/PagingIndicatorTest.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * 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 com.android.tv.common.ui.setup.leanback;
+
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import com.android.tv.testing.Utils;
+
+/**
+ * Tests for {@link PagingIndicator}.
+ */
+@SmallTest
+public class PagingIndicatorTest extends AndroidTestCase {
+    private PagingIndicator mIndicator;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        Utils.runOnMainSync(new Runnable() {
+            @Override
+            public void run() {
+                mIndicator = new PagingIndicator(getContext());
+            }
+        });
+    }
+
+    public void testDotPosition() {
+        mIndicator.setPageCount(3);
+        assertDotPosition();
+        mIndicator.setPageCount(6);
+        assertDotPosition();
+        mIndicator.setPageCount(9);
+        assertDotPosition();
+    }
+
+    private void assertDotPosition() {
+        assertSymmetry();
+        assertDistance();
+    }
+
+    private void assertSymmetry() {
+        int pageCount = mIndicator.getPageCount();
+        int mid = pageCount / 2;
+        int[] selectedX = mIndicator.getDotSelectedX();
+        int sum = selectedX[0] + selectedX[pageCount - 1];
+        for (int i = 1; i <= mid; ++i) {
+            assertEquals("Selected dots are not symmetric", sum,
+                    selectedX[i] + selectedX[pageCount - i - 1]);
+        }
+        int[] leftX = mIndicator.getDotSelectedLeftX();
+        int[] rightX = mIndicator.getDotSelectedRightX();
+        sum = leftX[0] + rightX[pageCount - 1];
+        for (int i = 1; i < pageCount - 1; ++i) {
+            assertEquals("Deselected dots are not symmetric", sum,
+                    leftX[i] + rightX[pageCount - i - 1]);
+        }
+    }
+
+    private void assertDistance() {
+        int pageCount = mIndicator.getPageCount();
+        int[] selectedX = mIndicator.getDotSelectedX();
+        int[] leftX = mIndicator.getDotSelectedLeftX();
+        int[] rightX = mIndicator.getDotSelectedRightX();
+        int distance = selectedX[1] - selectedX[0];
+        for (int i = 2; i < pageCount; ++i) {
+            assertEquals("Gaps between selected dots are not even", distance,
+                    selectedX[i] - selectedX[i - 1]);
+        }
+        distance = leftX[1] - leftX[0];
+        for (int i = 2; i < pageCount - 1; ++i) {
+            assertEquals("Gaps between left dots are not even", distance,
+                    leftX[i] - leftX[i - 1]);
+        }
+        distance = rightX[2] - rightX[1];
+        for (int i = 3; i < pageCount; ++i) {
+            assertEquals("Gaps between right dots are not even", distance,
+                    rightX[i] - rightX[i - 1]);
+        }
+    }
+}