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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
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* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.compiler.debug.test;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import org.junit.Assert;
import org.junit.Test;
import org.graalvm.compiler.debug.Debug;
import org.graalvm.compiler.debug.DebugHistogram;
import org.graalvm.compiler.debug.internal.DebugHistogramAsciiPrinter;
import org.graalvm.compiler.debug.internal.DebugHistogramRPrinter;
public class DebugHistogramTest {
@Test
public void testEmptyHistogram() {
DebugHistogram histogram = Debug.createHistogram("TestHistogram");
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
new DebugHistogramAsciiPrinter(new PrintStream(outputStream)).print(histogram);
String line = outputStream.toString().split("\r?\n")[0];
Assert.assertEquals("TestHistogram is empty.", line);
outputStream.reset();
new DebugHistogramRPrinter(new PrintStream(outputStream)).print(histogram);
Assert.assertEquals("", outputStream.toString());
}
@Test
public void testSingleEntryHistogram() {
DebugHistogram histogram = Debug.createHistogram("TestHistogram");
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
histogram.add(new Integer(1));
histogram.add(new Integer(1));
new DebugHistogramAsciiPrinter(new PrintStream(outputStream)).print(histogram);
String[] lines = outputStream.toString().split("\r?\n");
// @formatter:off
String[] expected = {
"TestHistogram has 1 unique elements and 2 total elements:",
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------",
"| 1 | 2 | ==================================================================================================== |",
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------"
};
// @formatter:on
Assert.assertArrayEquals(expected, lines);
outputStream.reset();
new DebugHistogramRPrinter(new PrintStream(outputStream)).print(histogram);
lines = outputStream.toString().split("\r?\n");
// @formatter:off
expected = new String[] {
"TestHistogram <- c(2);",
"names(TestHistogram) <- c(\"1\");"
};
// @formatter:on
Assert.assertArrayEquals(expected, lines);
}
@Test
public void testMultipleEntryHistogram() {
DebugHistogram histogram = Debug.createHistogram("TestHistogram");
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
histogram.add(new Integer(1));
histogram.add(new Integer(2));
histogram.add(new Integer(2));
new DebugHistogramAsciiPrinter(new PrintStream(outputStream)).print(histogram);
String[] lines = outputStream.toString().split("\r?\n");
// @formatter:off
String[] expected = new String[] {
"TestHistogram has 2 unique elements and 3 total elements:",
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------",
"| 2 | 2 | ==================================================================================================== |",
"| 1 | 1 | ================================================== |",
"--------------------------------------------------------------------------------------------------------------------------------------------------------------------------"
};
// @formatter:on
Assert.assertArrayEquals(expected, lines);
outputStream.reset();
new DebugHistogramRPrinter(new PrintStream(outputStream)).print(histogram);
lines = outputStream.toString().split("\r?\n");
// @formatter:off
expected = new String[] {
"TestHistogram <- c(2, 1);",
"names(TestHistogram) <- c(\"2\", \"1\");"
};
// @formatter:on
Assert.assertArrayEquals(expected, lines);
}
@Test
public void testTooLongValueString() {
DebugHistogram histogram = Debug.createHistogram("TestHistogram");
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
histogram.add("MyCustomValue");
new DebugHistogramAsciiPrinter(new PrintStream(outputStream), Integer.MAX_VALUE, 10, 10, 1).print(histogram);
String[] lines = outputStream.toString().split("\r?\n");
Assert.assertEquals(4, lines.length);
Assert.assertEquals("TestHistogram has 1 unique elements and 1 total elements:", lines[0]);
Assert.assertEquals("----------------------------------------", lines[1]);
Assert.assertEquals("| MyCusto... | 1 | ========== |", lines[2]);
Assert.assertEquals("----------------------------------------", lines[3]);
}
}