Home | History | Annotate | Download | only in test 
      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 package com.android.ahat;
     18 
     19 import com.android.tools.perflib.heap.Instance;
     20 import java.io.IOException;
     21 import static org.junit.Assert.assertEquals;
     22 import static org.junit.Assert.assertNotNull;
     23 import static org.junit.Assert.assertNull;
     24 import org.junit.Test;
     25 
     26 public class InstanceUtilsTest {
     27   @Test
     28   public void asStringBasic() throws IOException {
     29     TestDump dump = TestDump.getTestDump();
     30     Instance str = (Instance)dump.getDumpedThing("basicString");
     31     assertEquals("hello, world", InstanceUtils.asString(str));
     32   }
     33 
     34   @Test
     35   public void asStringCharArray() throws IOException {
     36     TestDump dump = TestDump.getTestDump();
     37     Instance str = (Instance)dump.getDumpedThing("charArray");
     38     assertEquals("char thing", InstanceUtils.asString(str));
     39   }
     40 
     41   @Test
     42   public void asStringTruncated() throws IOException {
     43     TestDump dump = TestDump.getTestDump();
     44     Instance str = (Instance)dump.getDumpedThing("basicString");
     45     assertEquals("hello", InstanceUtils.asString(str, 5));
     46   }
     47 
     48   @Test
     49   public void asStringCharArrayTruncated() throws IOException {
     50     TestDump dump = TestDump.getTestDump();
     51     Instance str = (Instance)dump.getDumpedThing("charArray");
     52     assertEquals("char ", InstanceUtils.asString(str, 5));
     53   }
     54 
     55   @Test
     56   public void asStringExactMax() throws IOException {
     57     TestDump dump = TestDump.getTestDump();
     58     Instance str = (Instance)dump.getDumpedThing("basicString");
     59     assertEquals("hello, world", InstanceUtils.asString(str, 12));
     60   }
     61 
     62   @Test
     63   public void asStringCharArrayExactMax() throws IOException {
     64     TestDump dump = TestDump.getTestDump();
     65     Instance str = (Instance)dump.getDumpedThing("charArray");
     66     assertEquals("char thing", InstanceUtils.asString(str, 10));
     67   }
     68 
     69   @Test
     70   public void asStringNotTruncated() throws IOException {
     71     TestDump dump = TestDump.getTestDump();
     72     Instance str = (Instance)dump.getDumpedThing("basicString");
     73     assertEquals("hello, world", InstanceUtils.asString(str, 50));
     74   }
     75 
     76   @Test
     77   public void asStringCharArrayNotTruncated() throws IOException {
     78     TestDump dump = TestDump.getTestDump();
     79     Instance str = (Instance)dump.getDumpedThing("charArray");
     80     assertEquals("char thing", InstanceUtils.asString(str, 50));
     81   }
     82 
     83   @Test
     84   public void asStringNegativeMax() throws IOException {
     85     TestDump dump = TestDump.getTestDump();
     86     Instance str = (Instance)dump.getDumpedThing("basicString");
     87     assertEquals("hello, world", InstanceUtils.asString(str, -3));
     88   }
     89 
     90   @Test
     91   public void asStringCharArrayNegativeMax() throws IOException {
     92     TestDump dump = TestDump.getTestDump();
     93     Instance str = (Instance)dump.getDumpedThing("charArray");
     94     assertEquals("char thing", InstanceUtils.asString(str, -3));
     95   }
     96 
     97   @Test
     98   public void asStringNull() throws IOException {
     99     TestDump dump = TestDump.getTestDump();
    100     Instance obj = (Instance)dump.getDumpedThing("nullString");
    101     assertNull(InstanceUtils.asString(obj));
    102   }
    103 
    104   @Test
    105   public void asStringNotString() throws IOException {
    106     TestDump dump = TestDump.getTestDump();
    107     Instance obj = (Instance)dump.getDumpedThing("anObject");
    108     assertNotNull(obj);
    109     assertNull(InstanceUtils.asString(obj));
    110   }
    111 
    112   @Test
    113   public void basicReference() throws IOException {
    114     TestDump dump = TestDump.getTestDump();
    115 
    116     Instance pref = (Instance)dump.getDumpedThing("aPhantomReference");
    117     Instance wref = (Instance)dump.getDumpedThing("aWeakReference");
    118     Instance referent = (Instance)dump.getDumpedThing("anObject");
    119     assertNotNull(pref);
    120     assertNotNull(wref);
    121     assertNotNull(referent);
    122     assertEquals(referent, InstanceUtils.getReferent(pref));
    123     assertEquals(referent, InstanceUtils.getReferent(wref));
    124     assertNull(InstanceUtils.getReferent(referent));
    125   }
    126 }
    127