1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
// Copyright 2019 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <memory>
#include "deps_log.h"
#include "graph.h"
#include "missing_deps.h"
#include "state.h"
#include "test.h"
const char kTestDepsLogFilename[] = "MissingDepTest-tempdepslog";
class MissingDependencyTestDelegate : public MissingDependencyScannerDelegate {
void OnMissingDep(Node* node, const std::string& path,
const Rule& generator) {}
};
struct MissingDependencyScannerTest : public testing::Test {
MissingDependencyScannerTest()
: generator_rule_("generator_rule"), compile_rule_("compile_rule"),
scanner_(&delegate_, &deps_log_, &state_, &filesystem_) {
std::string err;
deps_log_.OpenForWrite(kTestDepsLogFilename, &err);
ASSERT_EQ("", err);
}
MissingDependencyScanner& scanner() { return scanner_; }
void RecordDepsLogDep(const std::string& from, const std::string& to) {
Node* node_deps[] = { state_.LookupNode(to) };
deps_log_.RecordDeps(state_.LookupNode(from), 0, 1, node_deps);
}
void ProcessAllNodes() {
std::string err;
std::vector<Node*> nodes = state_.RootNodes(&err);
EXPECT_EQ("", err);
for (std::vector<Node*>::iterator it = nodes.begin(); it != nodes.end();
++it) {
scanner().ProcessNode(*it);
}
}
void CreateInitialState() {
EvalString deps_type;
deps_type.AddText("gcc");
compile_rule_.AddBinding("deps", deps_type);
generator_rule_.AddBinding("deps", deps_type);
Edge* header_edge = state_.AddEdge(&generator_rule_);
state_.AddOut(header_edge, "generated_header", 0);
Edge* compile_edge = state_.AddEdge(&compile_rule_);
state_.AddOut(compile_edge, "compiled_object", 0);
}
void CreateGraphDependencyBetween(const char* from, const char* to) {
Node* from_node = state_.LookupNode(from);
Edge* from_edge = from_node->in_edge();
state_.AddIn(from_edge, to, 0);
}
void AssertMissingDependencyBetween(const char* flaky, const char* generated,
Rule* rule) {
Node* flaky_node = state_.LookupNode(flaky);
ASSERT_EQ(1u, scanner().nodes_missing_deps_.count(flaky_node));
Node* generated_node = state_.LookupNode(generated);
ASSERT_EQ(1u, scanner().generated_nodes_.count(generated_node));
ASSERT_EQ(1u, scanner().generator_rules_.count(rule));
}
MissingDependencyTestDelegate delegate_;
Rule generator_rule_;
Rule compile_rule_;
DepsLog deps_log_;
State state_;
VirtualFileSystem filesystem_;
MissingDependencyScanner scanner_;
};
TEST_F(MissingDependencyScannerTest, EmptyGraph) {
ProcessAllNodes();
ASSERT_FALSE(scanner().HadMissingDeps());
}
TEST_F(MissingDependencyScannerTest, NoMissingDep) {
CreateInitialState();
ProcessAllNodes();
ASSERT_FALSE(scanner().HadMissingDeps());
}
TEST_F(MissingDependencyScannerTest, MissingDepPresent) {
CreateInitialState();
// compiled_object uses generated_header, without a proper dependency
RecordDepsLogDep("compiled_object", "generated_header");
ProcessAllNodes();
ASSERT_TRUE(scanner().HadMissingDeps());
ASSERT_EQ(1u, scanner().nodes_missing_deps_.size());
ASSERT_EQ(1u, scanner().missing_dep_path_count_);
AssertMissingDependencyBetween("compiled_object", "generated_header",
&generator_rule_);
}
TEST_F(MissingDependencyScannerTest, MissingDepFixedDirect) {
CreateInitialState();
// Adding the direct dependency fixes the missing dep
CreateGraphDependencyBetween("compiled_object", "generated_header");
RecordDepsLogDep("compiled_object", "generated_header");
ProcessAllNodes();
ASSERT_FALSE(scanner().HadMissingDeps());
}
TEST_F(MissingDependencyScannerTest, MissingDepFixedIndirect) {
CreateInitialState();
// Adding an indirect dependency also fixes the issue
Edge* intermediate_edge = state_.AddEdge(&generator_rule_);
state_.AddOut(intermediate_edge, "intermediate", 0);
CreateGraphDependencyBetween("compiled_object", "intermediate");
CreateGraphDependencyBetween("intermediate", "generated_header");
RecordDepsLogDep("compiled_object", "generated_header");
ProcessAllNodes();
ASSERT_FALSE(scanner().HadMissingDeps());
}
TEST_F(MissingDependencyScannerTest, CyclicMissingDep) {
CreateInitialState();
RecordDepsLogDep("generated_header", "compiled_object");
RecordDepsLogDep("compiled_object", "generated_header");
// In case of a cycle, both paths are reported (and there is
// no way to fix the issue by adding deps).
ProcessAllNodes();
ASSERT_TRUE(scanner().HadMissingDeps());
ASSERT_EQ(2u, scanner().nodes_missing_deps_.size());
ASSERT_EQ(2u, scanner().missing_dep_path_count_);
AssertMissingDependencyBetween("compiled_object", "generated_header",
&generator_rule_);
AssertMissingDependencyBetween("generated_header", "compiled_object",
&compile_rule_);
}
TEST_F(MissingDependencyScannerTest, CycleInGraph) {
CreateInitialState();
CreateGraphDependencyBetween("compiled_object", "generated_header");
CreateGraphDependencyBetween("generated_header", "compiled_object");
// The missing-deps tool doesn't deal with cycles in the graph, because
// there will be an error loading the graph before we get to the tool.
// This test is to illustrate that.
std::string err;
std::vector<Node*> nodes = state_.RootNodes(&err);
ASSERT_NE("", err);
}
|
