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 <gtest/gtest.h>
18#include <string>
19
20#include "ResourceValues.h"
21#include "util/Util.h"
22#include "ValueVisitor.h"
23#include "test/Builders.h"
24
25namespace aapt {
26
27struct SingleReferenceVisitor : public ValueVisitor {
28    using ValueVisitor::visit;
29
30    Reference* visited = nullptr;
31
32    void visit(Reference* ref) override {
33        visited = ref;
34    }
35};
36
37struct StyleVisitor : public ValueVisitor {
38    using ValueVisitor::visit;
39
40    std::list<Reference*> visitedRefs;
41    Style* visitedStyle = nullptr;
42
43    void visit(Reference* ref) override {
44        visitedRefs.push_back(ref);
45    }
46
47    void visit(Style* style) override {
48        visitedStyle = style;
49        ValueVisitor::visit(style);
50    }
51};
52
53TEST(ValueVisitorTest, VisitsReference) {
54    Reference ref(ResourceName{u"android", ResourceType::kAttr, u"foo"});
55    SingleReferenceVisitor visitor;
56    ref.accept(&visitor);
57
58    EXPECT_EQ(visitor.visited, &ref);
59}
60
61TEST(ValueVisitorTest, VisitsReferencesInStyle) {
62    std::unique_ptr<Style> style = test::StyleBuilder()
63            .setParent(u"@android:style/foo")
64            .addItem(u"@android:attr/one", test::buildReference(u"@android:id/foo"))
65            .build();
66
67    StyleVisitor visitor;
68    style->accept(&visitor);
69
70    ASSERT_EQ(style.get(), visitor.visitedStyle);
71
72    // Entry attribute references, plus the parent reference, plus one value reference.
73    ASSERT_EQ(style->entries.size() + 2, visitor.visitedRefs.size());
74}
75
76TEST(ValueVisitorTest, ValueCast) {
77    std::unique_ptr<Reference> ref = test::buildReference(u"@android:color/white");
78    EXPECT_NE(valueCast<Reference>(ref.get()), nullptr);
79
80    std::unique_ptr<Style> style = test::StyleBuilder()
81            .addItem(u"@android:attr/foo", test::buildReference(u"@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