// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/platform/geometry/path_builder.h"

#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/geometry/path_types.h"

namespace blink {

TEST(PathBuilderTest, Empty) {
  PathBuilder builder;

  EXPECT_TRUE(builder.IsEmpty());
  EXPECT_TRUE(builder.CurrentPath().IsEmpty());

  builder.LineTo({1, 2});
  EXPECT_FALSE(builder.IsEmpty());
  EXPECT_FALSE(builder.CurrentPath().IsEmpty());

  builder.Finalize();
  EXPECT_TRUE(builder.IsEmpty());
  EXPECT_TRUE(builder.CurrentPath().IsEmpty());

  builder.LineTo({1, 2});
  EXPECT_FALSE(builder.IsEmpty());
  EXPECT_FALSE(builder.CurrentPath().IsEmpty());

  builder.Reset();
  EXPECT_TRUE(builder.IsEmpty());
  EXPECT_TRUE(builder.CurrentPath().IsEmpty());
}

TEST(PathBuilderTest, CurrentPath) {
  PathBuilder builder;

  const Path p0 = builder.CurrentPath();
  EXPECT_TRUE(p0.IsEmpty());

  builder.MoveTo({1, 2});
  const Path p1 = builder.CurrentPath();
  EXPECT_FALSE(p1.IsEmpty());
  EXPECT_NE(p0, p1);

  builder.LineTo({2, 3});
  const Path p2 = builder.CurrentPath();
  EXPECT_FALSE(p2.IsEmpty());
  EXPECT_NE(p1, p2);

  builder.Close();
  const Path p3 = builder.CurrentPath();
  EXPECT_FALSE(p3.IsEmpty());
  EXPECT_NE(p2, p3);

  const Path p4 = builder.Finalize();
  EXPECT_FALSE(p4.IsEmpty());
  EXPECT_EQ(p3, p4);

  const Path p5 = builder.CurrentPath();
  EXPECT_TRUE(p5.IsEmpty());
  EXPECT_NE(p4, p5);
}

TEST(PathBuilderTest, WindRule) {
  PathBuilder builder;

  // Default.
  EXPECT_EQ(
      SkFillTypeToWindRule(builder.CurrentPath().GetSkPath().getFillType()),
      WindRule::RULE_NONZERO);

  builder.SetWindRule(WindRule::RULE_EVENODD);
  EXPECT_EQ(
      SkFillTypeToWindRule(builder.CurrentPath().GetSkPath().getFillType()),
      WindRule::RULE_EVENODD);
}

}  // namespace blink