GoogleReports.java

package bsh;

import org.junit.Test;
import org.junit.runner.RunWith;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

import static bsh.TestUtil.eval;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

@RunWith(FilteredTestRunner.class)
public class GoogleReports {

	/**
	 * <a href="http://code.google.com/p/beanshell2/issues/detail?id=57">issue#57</a>
	 */
	@Test
	@SuppressWarnings({"ConstantIfStatement"})
	public void issue_57() throws Exception {
		int loopCount = 0;
		do {
			loopCount++;
			if (true) continue;
		} while (false);
		assertEquals(1, loopCount);
		loopCount = (Integer) eval(
				"int loopCount = 0;",
				"do{",
				"	loopCount++;",
				"	if (loopCount > 100) return loopCount;",
				"	if (true) continue;",
				"} while (false);",
				"return loopCount"
		);
		assertEquals(1, loopCount);
		loopCount = (Integer) eval(
				"int loopCount = 0;",
				"while (loopCount < 1) {",
				"	loopCount++;",
				"	if (loopCount > 100) return loopCount;",
				"	if (true) continue;",
				"}",
				"return loopCount"
		);
		assertEquals(1, loopCount);
		assertEquals(Boolean.TRUE, eval("while(true) { break; return false; } return true;"));
		assertEquals(Boolean.TRUE, eval("do { break; return false; } while(true); return true;"));
		loopCount = (Integer) eval(
				"int loopCount = 0;",
				"while (++loopCount < 2);",
				"return loopCount"
		);
		assertEquals(2, loopCount);
		loopCount = (Integer) eval(
				"int loopCount = 0;",
				"do { } while (++loopCount < 2);",
				"return loopCount"
		);
		assertEquals(2, loopCount);
	}


	/**
	 * <a href="http://code.google.com/p/beanshell2/issues/detail?id=60">issue#60</a>
	 */
	@Test
	public void issue_60() throws Exception {
		final String script =
				"String foo = null;" +
				"if (foo != null && foo.length() > 0) return \"not empty\";" +
				"return \"empty\";";
		final ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
		scriptEngineManager.registerEngineName("beanshell", new BshScriptEngineFactory());
		final ScriptEngine engine = scriptEngineManager.getEngineByName("beanshell");
		assertNotNull(engine);
		Object result;
		result = engine.eval(script);
		assertEquals("empty", result);
		result = eval(script);
		assertEquals("empty", result);
	}

}