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1
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package abbot.util;
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2
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3
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import java.io.*;
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4
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5
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import junit.framework.*;
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6
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import junit.extensions.abbot.*;
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7
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8
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public class SystemStateTest extends TestCase {
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9
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10
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1
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public void testPreserveProperties() throws Throwable {
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11
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final String nullProperty = "null.property";
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12
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final String knownProperty = "os.name";
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13
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String nullValue = System.getProperty(nullProperty);
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14
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String knownValue = System.getProperty(knownProperty);
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15
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SystemState state = new SystemState();
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16
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System.setProperty(nullProperty, "non-null");
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18
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System.setProperty(knownProperty, "dummy value");
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19
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20
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state.restore();
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21
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assertEquals("Null property not restored",
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nullValue, System.getProperty(nullProperty));
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assertEquals("Known property not restored",
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knownValue, System.getProperty(knownProperty));
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25
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}
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26
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27
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public void testPreserveStreams() throws Throwable {
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28
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PrintStream out = System.out;
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29
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PrintStream err = System.err;
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30
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SystemState state = new SystemState();
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31
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32
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System.out.close();
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33
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System.err.close();
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34
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System.setOut(new PrintStream(new OutputStream() {
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35
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public void write(int b) { }
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36
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}));
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37
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System.setErr(new PrintStream(new OutputStream() {
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38
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public void write(int b) { }
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39
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}));
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40
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System.out.println(getName());
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41
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System.err.println(getName());
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42
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43
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state.restore();
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44
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45
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assertEquals("System.out not preserved", out, System.out);
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46
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assertEquals("System.err not preserved", err, System.err);
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47
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assertTrue("System.out was closed", !System.out.checkError());
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48
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assertTrue("System.err was closed", !System.err.checkError());
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49
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}
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50
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51
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0
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public static void main(String[] args) {
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52
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0
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TestHelper.runTests(args, SystemStateTest.class);
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53
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}
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54
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}
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55
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