reference_table_test.cc revision eb88be2ac9347decf230a4e5149c43bce0160586 
1/*
2 * Copyright (C) 2011 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 "reference_table.h"
18
19#include "common_runtime_test.h"
20#include "mirror/array-inl.h"
21#include "mirror/string.h"
22#include "scoped_thread_state_change.h"
23#include "thread-inl.h"
24
25namespace art {
26
27class ReferenceTableTest : public CommonRuntimeTest {};
28
29TEST_F(ReferenceTableTest, Basics) {
30  ScopedObjectAccess soa(Thread::Current());
31  mirror::Object* o1 = mirror::String::AllocFromModifiedUtf8(soa.Self(), "hello");
32
33  ReferenceTable rt("test", 0, 11);
34
35  // Check dumping the empty table.
36  {
37    std::ostringstream oss;
38    rt.Dump(oss);
39    EXPECT_NE(oss.str().find("(empty)"), std::string::npos) << oss.str();
40    EXPECT_EQ(0U, rt.Size());
41  }
42
43  // Check removal of all NULLs in a empty table is a no-op.
44  rt.Remove(NULL);
45  EXPECT_EQ(0U, rt.Size());
46
47  // Check removal of all o1 in a empty table is a no-op.
48  rt.Remove(o1);
49  EXPECT_EQ(0U, rt.Size());
50
51  // Add o1 and check we have 1 element and can dump.
52  {
53    rt.Add(o1);
54    EXPECT_EQ(1U, rt.Size());
55    std::ostringstream oss;
56    rt.Dump(oss);
57    EXPECT_NE(oss.str().find("1 of java.lang.String"), std::string::npos) << oss.str();
58    EXPECT_EQ(oss.str().find("short[]"), std::string::npos) << oss.str();
59  }
60
61  // Add a second object 10 times and check dumping is sane.
62  mirror::Object* o2 = mirror::ShortArray::Alloc(soa.Self(), 0);
63  for (size_t i = 0; i < 10; ++i) {
64    rt.Add(o2);
65    EXPECT_EQ(i + 2, rt.Size());
66    std::ostringstream oss;
67    rt.Dump(oss);
68    EXPECT_NE(oss.str().find(StringPrintf("Last %zd entries (of %zd):",
69                                          i + 2 > 10 ? 10 : i + 2,
70                                          i + 2)),
71              std::string::npos) << oss.str();
72    EXPECT_NE(oss.str().find("1 of java.lang.String"), std::string::npos) << oss.str();
73    if (i == 0) {
74      EXPECT_NE(oss.str().find("1 of short[]"), std::string::npos) << oss.str();
75    } else {
76      EXPECT_NE(oss.str().find(StringPrintf("%zd of short[] (1 unique instances)", i + 1)),
77                std::string::npos) << oss.str();
78    }
79  }
80
81  // Remove o1 (first element).
82  {
83    rt.Remove(o1);
84    EXPECT_EQ(10U, rt.Size());
85    std::ostringstream oss;
86    rt.Dump(oss);
87    EXPECT_EQ(oss.str().find("java.lang.String"), std::string::npos) << oss.str();
88  }
89
90  // Remove o2 ten times.
91  for (size_t i = 0; i < 10; ++i) {
92    rt.Remove(o2);
93    EXPECT_EQ(9 - i, rt.Size());
94    std::ostringstream oss;
95    rt.Dump(oss);
96    if (i == 9) {
97      EXPECT_EQ(oss.str().find("short[]"), std::string::npos) << oss.str();
98    } else if (i == 8) {
99      EXPECT_NE(oss.str().find("1 of short[]"), std::string::npos) << oss.str();
100    } else {
101      EXPECT_NE(oss.str().find(StringPrintf("%zd of short[] (1 unique instances)", 10 - i - 1)),
102                std::string::npos) << oss.str();
103    }
104  }
105}
106
107}  // namespace art
108