improve unittests #196

Author: chewiebug

src/test/java/com/tagtraum/perf/gcviewer/imp/TestDataReaderGo.java

@@ -1,39 +1,63 @@
 package com.tagtraum.perf.gcviewer.imp;
 
-import static org.junit.Assert.assertEquals;
+import static org.hamcrest.Matchers.closeTo;
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertThat;
 
-import com.tagtraum.perf.gcviewer.UnittestHelper;
-import com.tagtraum.perf.gcviewer.model.GCModel;
-import com.tagtraum.perf.gcviewer.model.GcResourceFile;
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.logging.Level;
+
+import com.tagtraum.perf.gcviewer.UnittestHelper;
+import com.tagtraum.perf.gcviewer.model.AbstractGCEvent;
+import com.tagtraum.perf.gcviewer.model.GCModel;
+import com.tagtraum.perf.gcviewer.model.GCResource;
+import com.tagtraum.perf.gcviewer.model.GcResourceFile;
 import org.junit.Test;
 
 public class TestDataReaderGo {
 
     @Test
     public void test() throws IOException {
+        TestLogHandler handler = new TestLogHandler();
+        handler.setLevel(Level.WARNING);
+        GCResource gcResource = new GcResourceFile("byteArray");
+        gcResource.getLogger().addHandler(handler);
+
         String gcLog = ""
                 + "gc starting...\n" // Such a line is not produced by the Go GC; it is just for testing
-                + "gc 1 @997.597s 3%: 68+0.36+0.51 ms clock, 205+0/16/89+1.5 ms cpu, 84->84->42 MB, 86 MB goal, 3 P\n"
+                + "gc 1 @0.058s 0%: 0+1.9+0 ms clock, 0+0.94/1.9/2.9+0 ms cpu, 4->5->1 MB, 5 MB goal, 4 P\n"
                 + "a line unrelated to GC logging\n"
-                + "gc 2 @997.597s 3%: 68+0.36+0.51 ms clock, 205+0/16/89+1.5 ms cpu, 11111111111111111111111111111111111->84->42 MB, 86 MB goal, 3 P\n"
-                + "gc 3 @997.597s 3%: 68+0.36+0.51 ms clock, 205+0/16/89+1.5 ms cpu, 84->84->42 MB, 86 MB goal, 3 P\n";
+                + "gc 2 @0.073s 3%: 68+0.36+0.51 ms clock, 205+0/16/89+1.5 ms cpu, 11111111111111111111111111111111111->84->42 MB, 86 MB goal, 3 P\n"
+                + "gc 58 @17.837s 0%: 0.48+17+0 ms clock, 1.9+9.3/7.9/15+0 ms cpu, 30->30->15 MB, 31 MB goal, 4 P\n";
         ByteArrayInputStream in = new ByteArrayInputStream(gcLog.getBytes("US-ASCII"));
-        DataReader reader = new DataReaderGo(new GcResourceFile("byteArray"), in);
+        DataReader reader = new DataReaderGo(gcResource, in);
         GCModel model = reader.read();
 
-        assertEquals(2, model.size());
+        assertThat("gc 2 -> warning", handler.getCount(), is(1));
+        assertThat("size", model.size(), is(2));
+
+        AbstractGCEvent<?> event1 = model.get(0);
+        assertThat("timestamp", event1.getTimestamp(), closeTo(0.058, 0.0001));
+        assertThat("pause", event1.getPause(), closeTo(0 + 0, 0.1));
+        assertThat("preused", event1.getPreUsed(), is(4096));
+        assertThat("postused", event1.getPostUsed(), is(1024));
+        assertThat("heap", event1.getTotal(), is(5120));
     }
 
     @Test
     public void exampleLog() throws IOException {
-        String fileName = "go1.9.txt";
-        InputStream in = UnittestHelper.getResourceAsStream(UnittestHelper.FOLDER.GO, fileName);
-        DataReader reader = new DataReaderGo(new GcResourceFile(fileName), in);
+        TestLogHandler handler = new TestLogHandler();
+        handler.setLevel(Level.WARNING);
+        GCResource gcResource = new GcResourceFile("go1.9.txt");
+        gcResource.getLogger().addHandler(handler);
+
+        InputStream in = UnittestHelper.getResourceAsStream(UnittestHelper.FOLDER.GO, gcResource.getResourceName());
+        DataReader reader = new DataReaderGo(gcResource, in);
         GCModel model = reader.read();
 
-        assertEquals(635, model.size());
+        assertThat("warnings", handler.getCount(), is(0));
+        assertThat("size", model.size(), is(635));
     }
 }

src/test/java/com/tagtraum/perf/gcviewer/imp/TestDataReaderSun1_8_0G1.java

@@ -64,6 +64,7 @@ public void fullGcWithDetailedSizes() throws Exception {
         TestLogHandler handler = new TestLogHandler();
         handler.setLevel(Level.WARNING);
         GCResource gcResource = new GcResourceFile("byteArray");
+        gcResource.getLogger().addHandler(handler);
 
         ByteArrayInputStream in = new ByteArrayInputStream(
                 ("2014-07-24T13:49:45.090+0400: 92457.841: [Full GC (Allocation Failure)  5811M->3097M(12G), 8.9862292 secs]"