/*
* Copyright (C) 2016 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 android.support.percent;
import static android.support.percent.LayoutDirectionActions.setLayoutDirection;
import static android.support.test.espresso.Espresso.onView;
import static android.support.test.espresso.matcher.ViewMatchers.withId;
import android.os.Build;
import android.support.percent.test.R;
import android.support.test.filters.SmallTest;
import android.support.v4.view.ViewCompat;
import android.view.View;
import org.junit.Before;
import org.junit.Test;
/**
* The arrangement of child views in the layout class in the default LTR (left-to-right) direction
* is as follows:
*
* +---------------------------------------------+
* | |
* | TTTTTTTTTTTTTTTTTTTTT |
* | |
* | S |
* | S CCCCCCCCCCCCCCCCCC |
* | S CCCCCCCCCCCCCCCCCC |
* | S CCCCCCCCCCCCCCCCCC E |
* | S CCCCCCCCCCCCCCCCCC E |
* | S CCCCCCCCCCCCCCCCCC E |
* | CCCCCCCCCCCCCCCCCC E |
* | CCCCCCCCCCCCCCCCCC E |
* | E |
* | |
* | BBBBBBBBBBBBBBBBBBBBB |
* | |
* +---------------------------------------------+
*
* The arrangement of child views in the layout class in the RTL (right-to-left) direction
* is as follows:
*
* +---------------------------------------------+
* | |
* | TTTTTTTTTTTTTTTTTTTTT |
* | |
* | S |
* | CCCCCCCCCCCCCCCCCC S |
* | CCCCCCCCCCCCCCCCCC S |
* | E CCCCCCCCCCCCCCCCCC S |
* | E CCCCCCCCCCCCCCCCCC S |
* | E CCCCCCCCCCCCCCCCCC S |
* | E CCCCCCCCCCCCCCCCCC |
* | E CCCCCCCCCCCCCCCCCC |
* | E |
* | |
* | BBBBBBBBBBBBBBBBBBBBB |
* | |
* +---------------------------------------------+
*
* Child views are exercising the following percent-based constraints supported by
* <code>PercentRelativeLayout</code>:
*
* <ul>
* <li>Top child (marked with T) - width, aspect ratio, top margin, start margin.</li>
* <li>Start child (marked with S) - height, aspect ratio, top margin, start margin.</li>
* <li>Bottom child (marked with B) - width, aspect ratio, bottom margin, end margin.</li>
* <li>Right child (marked with E) - height, aspect ratio, bottom margin, end margin.</li>
* <li>Center child (marked with C) - margin (all sides) from the other four children.</li>
* </ul>
*
* Under LTR direction (pre-v17 devices and v17+ with default direction of en-US locale) we are
* testing the same assertions as <code>PercentRelativeTest</code>. Under RTL direction (on v17+
* devices with Espresso-powered direction switch) we are testing the reverse assertions along the
* X axis for all child views.
*
* Note that due to a bug in the core {@link RelativeLayout} (base class of
* {@link PercentRelativeLayout}) in how it treats end margin of child views on v17 devices, we are
* skipping all tests in this class for v17 devices. This is in line with the overall contract
* of percent-based layouts provided by the support library - we do not work around / fix bugs in
* the core classes, but rather just provide a translation layer between percentage-based values
* and pixel-based ones.
*/
@SmallTest
public class PercentRelativeRtlTest extends BaseInstrumentationTestCase<TestRelativeRtlActivity> {
private PercentRelativeLayout mPercentRelativeLayout;
private int mContainerWidth;
private int mContainerHeight;
public PercentRelativeRtlTest() {
super(TestRelativeRtlActivity.class);
}
@Before
public void setUp() throws Exception {
final TestRelativeRtlActivity activity = mActivityTestRule.getActivity();
mPercentRelativeLayout = (PercentRelativeLayout) activity.findViewById(R.id.container);
mContainerWidth = mPercentRelativeLayout.getWidth();
mContainerHeight = mPercentRelativeLayout.getHeight();
}
private void switchToRtl() {
// Force the container to RTL mode
onView(withId(R.id.container)).perform(
setLayoutDirection(ViewCompat.LAYOUT_DIRECTION_RTL));
// Force a full measure + layout pass on the container
mPercentRelativeLayout.measure(
View.MeasureSpec.makeMeasureSpec(mContainerWidth, View.MeasureSpec.EXACTLY),
View.MeasureSpec.makeMeasureSpec(mContainerHeight, View.MeasureSpec.EXACTLY));
mPercentRelativeLayout.layout(mPercentRelativeLayout.getLeft(),
mPercentRelativeLayout.getTop(), mPercentRelativeLayout.getRight(),
mPercentRelativeLayout.getBottom());
}
@Test
public void testTopChild() {
if (Build.VERSION.SDK_INT == 17) {
return;
}
final View childToTest = mPercentRelativeLayout.findViewById(R.id.child_top);
if (Build.VERSION.SDK_INT >= 17) {
switchToRtl();
final int childRight = childToTest.getRight();
assertFuzzyEquals("Child start margin as 20% of the container",
0.2f * mContainerWidth, mContainerWidth - childRight);
} else {
final int childLeft = childToTest.getLeft();
assertFuzzyEquals("Child start margin as 20% of the container",
0.2f * mContainerWidth, childLeft);
}
final int childTop = childToTest.getTop();
assertFuzzyEquals("Child top margin as 5% of the container",
0.05f * mContainerHeight, childTop);
final int childWidth = childToTest.getWidth();
final int childHeight = childToTest.getHeight();
assertFuzzyEquals("Child width as 50% of the container",
0.5f * mContainerWidth, childWidth);
assertFuzzyEquals("Child aspect ratio of 2000%",
0.05f * childWidth, childHeight);
}
@Test
public void testStartChild() {
if (Build.VERSION.SDK_INT == 17) {
return;
}
final View childToTest = mPercentRelativeLayout.findViewById(R.id.child_start);
if (Build.VERSION.SDK_INT >= 17) {
switchToRtl();
final int childRight = childToTest.getRight();
assertFuzzyEquals("Child start margin as 5% of the container",
0.05f * mContainerWidth, mContainerWidth - childRight);
} else {
final int childLeft = childToTest.getLeft();
assertFuzzyEquals("Child start margin as 5% of the container",
0.05f * mContainerWidth, childLeft);
}
final int childWidth = childToTest.getWidth();
final int childHeight = childToTest.getHeight();
assertFuzzyEquals("Child height as 50% of the container",
0.5f * mContainerHeight, childHeight);
assertFuzzyEquals("Child aspect ratio of 5%",
0.05f * childHeight, childWidth);
final int childTop = childToTest.getTop();
assertFuzzyEquals("Child top margin as 20% of the container",
0.2f * mContainerHeight, childTop);
}
@Test
public void testBottomChild() {
if (Build.VERSION.SDK_INT == 17) {
return;
}
final View childToTest = mPercentRelativeLayout.findViewById(R.id.child_bottom);
if (Build.VERSION.SDK_INT >= 17) {
switchToRtl();
final int childLeft = childToTest.getLeft();
assertFuzzyEquals("Child end margin as 20% of the container",
0.2f * mContainerWidth, childLeft);
} else {
final int childRight = childToTest.getRight();
assertFuzzyEquals("Child end margin as 20% of the container",
0.2f * mContainerWidth, mContainerWidth - childRight);
}
final int childWidth = childToTest.getWidth();
final int childHeight = childToTest.getHeight();
assertFuzzyEquals("Child width as 40% of the container",
0.4f * mContainerWidth, childWidth);
assertFuzzyEquals("Child aspect ratio of 2000%",
0.05f * childWidth, childHeight);
final int childBottom = childToTest.getBottom();
assertFuzzyEquals("Child bottom margin as 5% of the container",
0.05f * mContainerHeight, mContainerHeight - childBottom);
}
@Test
public void testEndChild() {
if (Build.VERSION.SDK_INT == 17) {
return;
}
final View childToTest = mPercentRelativeLayout.findViewById(R.id.child_end);
if (Build.VERSION.SDK_INT >= 17) {
switchToRtl();
final int childLeft = childToTest.getLeft();
assertFuzzyEquals("Child end margin as 5% of the container",
0.05f * mContainerWidth, childLeft);
} else {
final int childRight = childToTest.getRight();
assertFuzzyEquals("Child end margin as 5% of the container",
0.05f * mContainerWidth, mContainerWidth - childRight);
}
final int childWidth = childToTest.getWidth();
final int childHeight = childToTest.getHeight();
assertFuzzyEquals("Child height as 50% of the container",
0.4f * mContainerHeight, childHeight);
assertFuzzyEquals("Child aspect ratio of 5%",
0.05f * childHeight, childWidth);
final int childBottom = childToTest.getBottom();
assertFuzzyEquals("Child bottom margin as 20% of the container",
0.2f * mContainerHeight, mContainerHeight - childBottom);
}
@Test
public void testCenterChild() {
if (Build.VERSION.SDK_INT == 17) {
return;
}
final View childToTest = mPercentRelativeLayout.findViewById(R.id.child_center);
boolean supportsRtl = Build.VERSION.SDK_INT >= 17;
if (supportsRtl) {
switchToRtl();
}
final int childLeft = childToTest.getLeft();
final int childTop = childToTest.getTop();
final int childRight = childToTest.getRight();
final int childBottom = childToTest.getBottom();
final View leftChild = supportsRtl
? mPercentRelativeLayout.findViewById(R.id.child_end)
: mPercentRelativeLayout.findViewById(R.id.child_start);
assertFuzzyEquals("Child left margin as 10% of the container",
leftChild.getRight() + 0.1f * mContainerWidth, childLeft);
final View topChild = mPercentRelativeLayout.findViewById(R.id.child_top);
assertFuzzyEquals("Child top margin as 10% of the container",
topChild.getBottom() + 0.1f * mContainerHeight, childTop);
final View rightChild = supportsRtl
? mPercentRelativeLayout.findViewById(R.id.child_start)
: mPercentRelativeLayout.findViewById(R.id.child_end);
assertFuzzyEquals("Child right margin as 10% of the container",
rightChild.getLeft() - 0.1f * mContainerWidth, childRight);
final View bottomChild = mPercentRelativeLayout.findViewById(R.id.child_bottom);
assertFuzzyEquals("Child bottom margin as 10% of the container",
bottomChild.getTop() - 0.1f * mContainerHeight, childBottom);
}
}