Merge "Make LinearColorBar support RTL"

tests/robotests/src/com/android/settings/widget/LinearColorBarTest.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2018 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.settings.widget;
+
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.graphics.Canvas;
+
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.Shadows;
+import org.robolectric.annotation.Config;
+import org.robolectric.shadows.ShadowCanvas;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class LinearColorBarTest {
+
+    private static final int HEIGHT = 100;
+    private static final int WIDTH = 100;
+
+    private Context mContext;
+    private LinearColorBar mLinearColorBar;
+    private Canvas mCanvas;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+        mLinearColorBar = spy(new LinearColorBar(mContext, null /* attrs */));
+        when(mLinearColorBar.getHeight()).thenReturn(HEIGHT);
+        when(mLinearColorBar.getWidth()).thenReturn(WIDTH);
+        mLinearColorBar.setRatios(0.2f, 0.4f, 0.4f);
+        mLinearColorBar.setColors(1, 2, 3);
+        mCanvas = new Canvas();
+    }
+
+    @Test
+    public void draw_ltr_showStartFromLeft() {
+        mLinearColorBar.onDraw(mCanvas);
+
+        final ShadowCanvas shadowCanvas = Shadows.shadowOf(mCanvas);
+        assertThat(shadowCanvas.getRectPaintHistoryCount()).isEqualTo(3);
+
+        // 3 boxes, takes space of 20%, 40%, 40% of the the WIDTH correspondingly.
+        assertThat(shadowCanvas.getDrawnRect(0).left).isWithin(0.01f).of(0);
+        assertThat(shadowCanvas.getDrawnRect(1).left).isWithin(0.01f).of(20);
+        assertThat(shadowCanvas.getDrawnRect(2).left).isWithin(0.01f).of(60);
+    }
+
+    @Test
+    public void draw_rtl_showStartFromRight() {
+        when(mLinearColorBar.isLayoutRtl()).thenReturn(true);
+
+        mLinearColorBar.onDraw(mCanvas);
+
+        final ShadowCanvas shadowCanvas = Shadows.shadowOf(mCanvas);
+        assertThat(shadowCanvas.getRectPaintHistoryCount()).isEqualTo(3);
+
+        // 3 boxes, takes space of 20%, 40%, 40% of the the WIDTH correspondingly.
+        assertThat(shadowCanvas.getDrawnRect(0).right).isWithin(0.01f).of(100);
+        assertThat(shadowCanvas.getDrawnRect(1).right).isWithin(0.01f).of(80);
+        assertThat(shadowCanvas.getDrawnRect(2).right).isWithin(0.01f).of(40);
+    }
+}