1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "ValueVisitor.h"
18
19#include <string>
20
21#include "ResourceValues.h"
22#include "test/Test.h"
23#include "util/Util.h"
24
25namespace aapt {
26
27struct SingleReferenceVisitor : public DescendingValueVisitor {
28  using DescendingValueVisitor::Visit;
29
30  Reference* visited = nullptr;
31
32  void Visit(Reference* ref) override { visited = ref; }
33};
34
35struct StyleVisitor : public DescendingValueVisitor {
36  using DescendingValueVisitor::Visit;
37
38  std::list<Reference*> visited_refs;
39  Style* visited_style = nullptr;
40
41  void Visit(Reference* ref) override { visited_refs.push_back(ref); }
42
43  void Visit(Style* style) override {
44    visited_style = style;
45    DescendingValueVisitor::Visit(style);
46  }
47};
48
49TEST(ValueVisitorTest, VisitsReference) {
50  Reference ref(ResourceName{"android", ResourceType::kAttr, "foo"});
51  SingleReferenceVisitor visitor;
52  ref.Accept(&visitor);
53
54  EXPECT_EQ(visitor.visited, &ref);
55}
56
57TEST(ValueVisitorTest, VisitsReferencesInStyle) {
58  std::unique_ptr<Style> style =
59      test::StyleBuilder()
60          .SetParent("android:style/foo")
61          .AddItem("android:attr/one", test::BuildReference("android:id/foo"))
62          .Build();
63
64  StyleVisitor visitor;
65  style->Accept(&visitor);
66
67  ASSERT_EQ(style.get(), visitor.visited_style);
68
69  // Entry attribute references, plus the parent reference, plus one value
70  // reference.
71  ASSERT_EQ(style->entries.size() + 2, visitor.visited_refs.size());
72}
73
74TEST(ValueVisitorTest, ValueCast) {
75  std::unique_ptr<Reference> ref = test::BuildReference("android:color/white");
76  EXPECT_NE(ValueCast<Reference>(ref.get()), nullptr);
77
78  std::unique_ptr<Style> style =
79      test::StyleBuilder()
80          .AddItem("android:attr/foo",
81                   test::BuildReference("android:color/black"))
82          .Build();
83  EXPECT_NE(ValueCast<Style>(style.get()), nullptr);
84  EXPECT_EQ(ValueCast<Reference>(style.get()), nullptr);
85}
86
87}  // namespace aapt
88