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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include <gtest/gtest.h>
#include <yoga/Yoga.h>
TEST(YogaTest, rounding_value) {
// Test that whole numbers are rounded to whole despite ceil/floor flags
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(6.000001, 2.0, false, false));
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(6.000001, 2.0, true, false));
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(6.000001, 2.0, false, true));
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(5.999999, 2.0, false, false));
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(5.999999, 2.0, true, false));
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(5.999999, 2.0, false, true));
// Same tests for negative numbers
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-6.000001, 2.0, false, false));
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-6.000001, 2.0, true, false));
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-6.000001, 2.0, false, true));
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-5.999999, 2.0, false, false));
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-5.999999, 2.0, true, false));
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-5.999999, 2.0, false, true));
// Test that numbers with fraction are rounded correctly accounting for
// ceil/floor flags
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(6.01, 2.0, false, false));
ASSERT_FLOAT_EQ(6.5, YGRoundValueToPixelGrid(6.01, 2.0, true, false));
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(6.01, 2.0, false, true));
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(5.99, 2.0, false, false));
ASSERT_FLOAT_EQ(6.0, YGRoundValueToPixelGrid(5.99, 2.0, true, false));
ASSERT_FLOAT_EQ(5.5, YGRoundValueToPixelGrid(5.99, 2.0, false, true));
// Same tests for negative numbers
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-6.01, 2.0, false, false));
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-6.01, 2.0, true, false));
ASSERT_FLOAT_EQ(-6.5, YGRoundValueToPixelGrid(-6.01, 2.0, false, true));
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-5.99, 2.0, false, false));
ASSERT_FLOAT_EQ(-5.5, YGRoundValueToPixelGrid(-5.99, 2.0, true, false));
ASSERT_FLOAT_EQ(-6.0, YGRoundValueToPixelGrid(-5.99, 2.0, false, true));
}
static YGSize measureText(
YGNodeConstRef /*node*/,
float /*width*/,
YGMeasureMode /*widthMode*/,
float /*height*/,
YGMeasureMode /*heightMode*/) {
return YGSize{10, 10};
}
// Regression test for https://github.com/facebook/yoga/issues/824
TEST(YogaTest, consistent_rounding_during_repeated_layouts) {
YGConfigRef config = YGConfigNew();
YGConfigSetPointScaleFactor(config, 2);
YGNodeRef root = YGNodeNewWithConfig(config);
YGNodeStyleSetMargin(root, YGEdgeTop, -1.49f);
YGNodeStyleSetWidth(root, 500);
YGNodeStyleSetHeight(root, 500);
YGNodeRef node0 = YGNodeNewWithConfig(config);
YGNodeInsertChild(root, node0, 0);
YGNodeRef node1 = YGNodeNewWithConfig(config);
YGNodeSetMeasureFunc(node1, measureText);
YGNodeInsertChild(node0, node1, 0);
for (int i = 0; i < 5; i++) {
// Dirty the tree so YGRoundToPixelGrid runs again
YGNodeStyleSetMargin(root, YGEdgeLeft, (float)(i + 1));
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(10, YGNodeLayoutGetHeight(node1));
}
YGNodeFreeRecursive(root);
YGConfigFree(config);
}
TEST(YogaTest, per_node_point_scale_factor) {
YGConfigRef config1 = YGConfigNew();
YGConfigSetPointScaleFactor(config1, 2);
YGConfigRef config2 = YGConfigNew();
YGConfigSetPointScaleFactor(config2, 1);
YGConfigRef config3 = YGConfigNew();
YGConfigSetPointScaleFactor(config3, 0.5f);
YGNodeRef root = YGNodeNewWithConfig(config1);
YGNodeStyleSetWidth(root, 11.5);
YGNodeStyleSetHeight(root, 11.5);
YGNodeRef node0 = YGNodeNewWithConfig(config2);
YGNodeStyleSetWidth(node0, 9.5);
YGNodeStyleSetHeight(node0, 9.5);
YGNodeInsertChild(root, node0, 0);
YGNodeRef node1 = YGNodeNewWithConfig(config3);
YGNodeStyleSetWidth(node1, 7);
YGNodeStyleSetHeight(node1, 7);
YGNodeInsertChild(node0, node1, 0);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_EQ(YGNodeLayoutGetWidth(root), 11.5);
ASSERT_EQ(YGNodeLayoutGetHeight(root), 11.5);
ASSERT_EQ(YGNodeLayoutGetWidth(node0), 10);
ASSERT_EQ(YGNodeLayoutGetHeight(node0), 10);
ASSERT_EQ(YGNodeLayoutGetWidth(node1), 8);
ASSERT_EQ(YGNodeLayoutGetHeight(node1), 8);
YGNodeFreeRecursive(root);
YGConfigFree(config1);
YGConfigFree(config2);
YGConfigFree(config3);
}
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