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Commit f39efa12 authored by Ng Zhi An's avatar Ng Zhi An
Browse files

Add more tests for MemoryStatUtil

Bug: 73745057
Test: runtest frameworks-services
Change-Id: I38972f9883ea73c6f62e312bede340ef4686b383
parent db999ba5
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+124 −50
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@
package com.android.server.am;

import static com.android.server.am.MemoryStatUtil.parseMemoryStatFromMemcg;
import static com.android.server.am.MemoryStatUtil.parseMemoryStatFromProcfs;
import static com.android.server.am.MemoryStatUtil.MemoryStat;

import static org.junit.Assert.assertEquals;
@@ -66,9 +67,63 @@ public class MemoryStatUtilTest {
            "total_active_file 81920",
            "total_unevictable 0");

    private String PROC_STAT_CONTENTS = String.join(
            " ",
            "1040",
            "(system_server)",
            "S",
            "544",
            "544",
            "0",
            "0",
            "-1",
            "1077936448",
            "1", // this is pgfault
            "0",
            "2", // this is pgmajfault
            "0",
            "44533",
            "13471",
            "0",
            "0",
            "18",
            "-2",
            "117",
            "0",
            "2206",
            "1257177088",
            "3", // this is rss in bytes
            "4294967295",
            "2936971264",
            "2936991289",
            "3198888320",
            "3198879848",
            "2903927664",
            "0",
            "4612",
            "0",
            "1073775864",
            "4294967295",
            "0",
            "0",
            "17",
            "0",
            "0",
            "0",
            "0",
            "0",
            "0",
            "2936999088",
            "2936999936",
            "2958692352",
            "3198888595",
            "3198888671",
            "3198888671",
            "3198889956",
            "0");

    @Test
  public void testParseMemoryStat_parsesCorrectValues() throws Exception {
    public void testParseMemoryStatFromMemcg_parsesCorrectValues() throws Exception {
        MemoryStat stat = parseMemoryStatFromMemcg(MEMORY_STAT_CONTENTS);
        assertEquals(stat.pgfault, 1);
        assertEquals(stat.pgmajfault, 2);
@@ -78,11 +133,30 @@ public class MemoryStatUtilTest {
    }

    @Test
  public void testParseMemoryStat_emptyMemoryStatContents() throws Exception {
    public void testParseMemoryStatFromMemcg_emptyMemoryStatContents() throws Exception {
        MemoryStat stat = parseMemoryStatFromMemcg("");
        assertNull(stat);

        stat = parseMemoryStatFromMemcg(null);
        assertNull(stat);
    }

    @Test
    public void testParseMemoryStatFromProcfs_parsesCorrectValues() throws Exception {
        MemoryStat stat = parseMemoryStatFromProcfs(PROC_STAT_CONTENTS);
        assertEquals(1, stat.pgfault);
        assertEquals(2, stat.pgmajfault);
        assertEquals(3, stat.rssInBytes);
        assertEquals(0, stat.cacheInBytes);
        assertEquals(0, stat.swapInBytes);
    }

    @Test
    public void testParseMemoryStatFromProcfs_emptyContents() throws Exception {
        MemoryStat stat = parseMemoryStatFromProcfs("");
        assertNull(stat);

        stat = parseMemoryStatFromProcfs(null);
        assertNull(stat);
    }
}
+1 −1

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