com.facebook.yoga.YogaMeasureFunction Java Examples

@Test
public void testLayoutSpecMeasureResolveNestedTree_withExperiment() {
  Component component =
      setUpSpyComponentForCreateLayout(false /* isMountSpec */, true /* canMeasure */);
  YogaMeasureFunction measureFunction = getMeasureFunction(component);

  final int nestedTreeWidth = 20;
  final int nestedTreeHeight = 25;
  InternalNode nestedTree = mock(InternalNode.class);
  when(nestedTree.getWidth()).thenReturn(nestedTreeWidth);
  when(nestedTree.getHeight()).thenReturn(nestedTreeHeight);
  when(Layout.create(eq(mContext), eq(mNode), anyInt(), anyInt())).thenReturn(nestedTree);
  when(mNode.getContext()).thenReturn(mContext);
  when(mContext.isReconciliationEnabled()).thenReturn(true);
  when(mNode.getParent()).thenReturn(mNode);

  when(mNode.getContext()).thenReturn(mContext);
  long output = measureFunction.measure(mYogaNode, 0, EXACTLY, 0, EXACTLY);

  PowerMockito.verifyStatic(Layout.class);
  Layout.create(eq(mContext), eq(mNode), anyInt(), anyInt());

  assertThat(YogaMeasureOutput.getWidth(output)).isEqualTo(nestedTreeWidth);
  assertThat(YogaMeasureOutput.getHeight(output)).isEqualTo(nestedTreeHeight);
}
 

@Test
public void testLayoutSpecMeasureResolveNestedTree() {
  Component component =
      setUpSpyComponentForCreateLayout(false /* isMountSpec */, true /* canMeasure */);
  YogaMeasureFunction measureFunction = getMeasureFunction(component);

  final int nestedTreeWidth = 20;
  final int nestedTreeHeight = 25;
  InternalNode nestedTree = mock(InternalNode.class);
  when(nestedTree.getWidth()).thenReturn(nestedTreeWidth);
  when(nestedTree.getHeight()).thenReturn(nestedTreeHeight);
  when(Layout.create(eq(mContext), eq(mNode), anyInt(), anyInt())).thenReturn(nestedTree);
  when(mNode.getContext()).thenReturn(mContext);

  long output = measureFunction.measure(mYogaNode, 0, EXACTLY, 0, EXACTLY);

  PowerMockito.verifyStatic(Layout.class);
  Layout.create(eq(mContext), eq(mNode), anyInt(), anyInt());

  assertThat(YogaMeasureOutput.getWidth(output)).isEqualTo(nestedTreeWidth);
  assertThat(YogaMeasureOutput.getHeight(output)).isEqualTo(nestedTreeHeight);
}
 

@Test
public void testCreateLayoutAndDontResolveNestedTreeWithLayoutSpecCannotMeasure() {
  Component component =
      setUpSpyComponentForCreateLayout(false /* isMountSpec */, false /* canMeasure */);
  InternalNode node = Layout.create(mContext, component, false);

  verify(component).onCreateLayout(mContext);
  verify(node).appendComponent(component);
  verify(node, never()).setMeasureFunction((YogaMeasureFunction) any());
}
 

private long measureInternalNode(
    InternalNode node, float widthConstranint, float heightConstraint) {

  final YogaMeasureFunction measureFunc =
      Whitebox.getInternalState(node.getYogaNode(), "mMeasureFunction");

  return measureFunc.measure(
      node.getYogaNode(), widthConstranint, EXACTLY, heightConstraint, EXACTLY);
}
 

@Test
public void testMountSpecYogaMeasureOutputSet() {
  Component component = new TestMountSpecSettingSizesInOnMeasure(mNode);
  YogaMeasureFunction measureFunction = getMeasureFunction(component);

  long output = measureFunction.measure(mYogaNode, 0, EXACTLY, 0, EXACTLY);

  assertThat(YogaMeasureOutput.getWidth(output)).isEqualTo(A_WIDTH);
  assertThat(YogaMeasureOutput.getHeight(output)).isEqualTo(A_HEIGHT);
}
 

@Test
public void testMountSpecYogaMeasureOutputNotSet() {
  Component component = new TestMountSpecWithEmptyOnMeasure(mNode);
  YogaMeasureFunction measureFunction = getMeasureFunction(component);

  try {
    measureFunction.measure(mYogaNode, 0, EXACTLY, 0, EXACTLY);
    fail("Should have failed when onMeasure() is empty.");
  } catch (Exception e) {
    assertThat(e).isExactlyInstanceOf(IllegalStateException.class);
    assertThat(e.getMessage()).contains("MeasureOutput not set");
  }
}
 

@Test
public void testOnMeasureNotOverridden() {
  Component component = setUpSpyComponentForCreateLayout(true, true);
  YogaMeasureFunction measureFunction = getMeasureFunction(component);

  try {
    measureFunction.measure(mYogaNode, 0, EXACTLY, 0, EXACTLY);
    fail("Should have failed without overridden onMeasure() when canMeasure() returns true.");
  } catch (Exception e) {
    assertThat(e).isExactlyInstanceOf(IllegalStateException.class);
    assertThat(e.getMessage()).contains("canMeasure()");
  }
}
 

@Test
public void testCreateLayoutAndDontResolveNestedTreeWithLayoutSpecCanMeasure() {
  Component component =
      setUpSpyComponentForCreateLayout(false /* isMountSpec */, true /* canMeasure */);
  InternalNode node = Layout.create(mContext, component, false);

  verify(component, never()).onCreateLayout((ComponentContext) any());
  verify(component, never())
      .onCreateLayoutWithSizeSpec((ComponentContext) any(), anyInt(), anyInt());
  verify(node).appendComponent(component);
  verify(node).setMeasureFunction((YogaMeasureFunction) any());
  verify(component, never()).onPrepare((ComponentContext) any());
}
 

@Test
public void testCreateLayoutAndResolveNestedTreeWithLayoutSpecCanMeasure() {
  Component component =
      setUpSpyComponentForCreateLayout(false /* isMountSpec */, true /* canMeasure */);
  mContext.setWidthSpec(mNestedTreeWidthSpec);
  mContext.setHeightSpec(mNestedTreeHeightSpec);
  InternalNode node = Layout.create(mContext, component, true);

  verify(component)
      .onCreateLayoutWithSizeSpec(mContext, mNestedTreeWidthSpec, mNestedTreeHeightSpec);
  verify(node).appendComponent(component);
  verify(node, never()).setMeasureFunction((YogaMeasureFunction) any());
}
 

@Test
public void testCreateLayoutAndResolveNestedTreeWithLayoutSpecCannotMeasure() {
  Component component =
      setUpSpyComponentForCreateLayout(false /* isMountSpec */, false /* canMeasure */);
  InternalNode node = Layout.create(mContext, component, true);

  verify(component).onCreateLayout(mContext);
  verify(node).appendComponent(component);
  verify(node, never()).setMeasureFunction((YogaMeasureFunction) any());
}
 

@Test
public void testCreateLayoutAndDontResolveNestedTreeWithMountSpecCanMeasure() {
  Component component =
      setUpSpyComponentForCreateLayout(true /* isMountSpec */, true /* canMeasure */);
  InternalNode node = Layout.create(mContext, component, false);

  verify(node).appendComponent(component);
  verify(node).setMeasureFunction((YogaMeasureFunction) any());
  verify(component).onPrepare(mContext);
}
 

@Test
public void testCreateLayoutAndResolveNestedTreeWithMountSpecCanMeasure() {
  Component component =
      setUpSpyComponentForCreateLayout(true /* isMountSpec */, true /* canMeasure */);
  InternalNode node = Layout.create(mContext, component, true);

  verify(node).appendComponent(component);
  verify(node).setMeasureFunction((YogaMeasureFunction) any());
  verify(component).onPrepare(mContext);
}
 

@Test
public void testCreateLayoutAndDontResolveNestedTreeWithMountSpecCannotMeasure() {
  Component component =
      setUpSpyComponentForCreateLayout(true /* isMountSpec */, false /* canMeasure */);
  InternalNode node = Layout.create(mContext, component, false);

  verify(node).appendComponent(component);
  verify(node, never()).setMeasureFunction((YogaMeasureFunction) any());
  verify(component).onPrepare(mContext);
}
 

@Test
public void testCreateLayoutAndResolveNestedTreeWithMountSpecCannotMeasure() {
  Component component =
      setUpSpyComponentForCreateLayout(true /* isMountSpec */, false /* canMeasure */);
  InternalNode node = Layout.create(mContext, component, true);

  verify(node).appendComponent(component);
  verify(node, never()).setMeasureFunction((YogaMeasureFunction) any());
  verify(component).onPrepare(mContext);
}
 

@Override
public void setMeasureFunction(YogaMeasureFunction measureFunction) {
  assertNotSealed();
  mYogaNode.setMeasureFunction(measureFunction);
}
 

@Override
public void setMeasureFunction(YogaMeasureFunction measureFunction) {
  mYogaNode.setMeasureFunction(measureFunction);
}
 

@Override
public void setMeasureFunction(YogaMeasureFunction measureFunction) {}
 

private YogaMeasureFunction getMeasureFunction(Component component) {
  when(mNode.getTailComponent()).thenReturn(component);

  return Whitebox.getInternalState(ComponentLifecycle.class, "sMeasureFunction");
}
 

void setMeasureFunction(YogaMeasureFunction measureFunction); 

void setMeasureFunction(YogaMeasureFunction measureFunction);