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
25 namespace aapt {
26
27 struct SingleReferenceVisitor : public ValueVisitor {
28 using ValueVisitor::Visit;
29
30 Reference* visited = nullptr;
31
Visitaapt::SingleReferenceVisitor32 void Visit(Reference* ref) override { visited = ref; }
33 };
34
35 struct StyleVisitor : public ValueVisitor {
36 using ValueVisitor::Visit;
37
38 std::list<Reference*> visited_refs;
39 Style* visited_style = nullptr;
40
Visitaapt::StyleVisitor41 void Visit(Reference* ref) override { visited_refs.push_back(ref); }
42
Visitaapt::StyleVisitor43 void Visit(Style* style) override {
44 visited_style = style;
45 ValueVisitor::Visit(style);
46 }
47 };
48
TEST(ValueVisitorTest,VisitsReference)49 TEST(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
TEST(ValueVisitorTest,VisitsReferencesInStyle)57 TEST(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
TEST(ValueVisitorTest,ValueCast)74 TEST(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