unicodeescapes2test.java

大名鼎鼎的java动态脚本语言。已经通过了sun的认证

package gls.ch03.s03;
import junit.framework.*;
import org.codehaus.groovy.tck.*;
public class UnicodeEscapes2Test extends TestCase {
    public void testPass() throws Throwable {
        StringBuffer srcBuffer = new StringBuffer();
        srcBuffer.append("package gls.ch03.s03").append(lineSep);
        srcBuffer.append("/**").append(lineSep);
        srcBuffer.append(" * GLS 3.3:").append(lineSep);
        srcBuffer.append(" * Implementations first recognize Unicode escapes in their input, translating ").append(lineSep);
        srcBuffer.append(" * the ASCII characters backslash and 'u' followed by four hexadecimal digits").append(lineSep);
        srcBuffer.append(" * to the Unicode character with the indicated hexadecimal value, and passing").append(lineSep);
        srcBuffer.append(" * all other characters unchanged.  ").append(lineSep);
        srcBuffer.append(" *").append(lineSep);
        srcBuffer.append(" * @author Alan Green").append(lineSep);
        srcBuffer.append(" */").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("class UnicodeEscapes2 extends GroovyTestCase {").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("    // GLS: If an even number of backslashes precede the 'u', it is not ").append(lineSep);
        srcBuffer.append("    // an escape").append(lineSep);
        srcBuffer.append("    void testCountBackslash() {").append(lineSep);
        srcBuffer.append("        def a = 1").append(lineSep);
        srcBuffer.append("        assert \\u0061 == 1 // char 61 is 'a'").append(lineSep);
        srcBuffer.append("        ").append(lineSep);
        srcBuffer.append("        // Not intepreted as an escape").append(lineSep);
        srcBuffer.append("        // \\\\u0061 == 1 // @fail:parse").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("        assert \"\\u0061\".length() == 1").append(lineSep);
        srcBuffer.append("        // Double backslash interpreted as a single backslash in string").append(lineSep);
        srcBuffer.append("        assert \"\\\\u0061\".length() == 6").append(lineSep);
        srcBuffer.append("        assert \"\\\\\\u0061\".length() == 2").append(lineSep);
        srcBuffer.append("        ").append(lineSep);
        srcBuffer.append("    }").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("    // GLS: If an eligible \\ is followed by u, or more than one u, and the last u").append(lineSep);
        srcBuffer.append("    // is not followed by four hexadecimal digits, then a compile-time error").append(lineSep);
        srcBuffer.append("    // occurs.").append(lineSep);
        srcBuffer.append("    void testFourHexDigits() {").append(lineSep);
        srcBuffer.append("        // these next lines won't work. The backslash has been replace by a ").append(lineSep);
        srcBuffer.append("        // forwards slash so that the file parses. (Comments don't comment out").append(lineSep);
        srcBuffer.append("        // unicode escapes.)").append(lineSep);
        srcBuffer.append("        // assert \"/u7\" == \"\\07\" //@fail:parse ").append(lineSep);
        srcBuffer.append("        // def /u61 = 2 //@fail:parse ").append(lineSep);
        srcBuffer.append("        // def /u061 = 2 //@fail:parse ").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("        // If five digits, only the first four count").append(lineSep);
        srcBuffer.append("        def \\u00610 = 2 ").append(lineSep);
        srcBuffer.append("        assert a0 == 2").append(lineSep);
        srcBuffer.append("    }").append(lineSep);
        srcBuffer.append("    void testInvalidHexDigits() {").append(lineSep);
        srcBuffer.append("        // invalid hex digits").append(lineSep);
        srcBuffer.append("        // assert \"\\ufffg\" == \"a\" // @fail:parse").append(lineSep);
        srcBuffer.append("        // assert \"\\uu006g\" == \"a\" // @fail:parse").append(lineSep);
        srcBuffer.append("        // assert \"\\uab cd\" == \"acd\" // @fail:parse").append(lineSep);
        srcBuffer.append("    }").append(lineSep);
        srcBuffer.append("}").append(lineSep);
        Object result = helper.evaluate(srcBuffer.toString(),"testPass");
        if (result instanceof TestResult) {
            TestResult testResult = (TestResult)result;
            if (testResult.errorCount() > 0) {
                TestFailure firstTestFailure = (TestFailure)testResult.errors().nextElement();
                throw firstTestFailure.thrownException();
            }
            if (testResult.failureCount() > 0) {
                AssertionFailedError firstFailure = (AssertionFailedError)(testResult.failures().nextElement());
                throw firstFailure;
            }
        }
    }
    public void testFailParse1() throws Throwable {
        StringBuffer srcBuffer = new StringBuffer();
        srcBuffer.append("package gls.ch03.s03").append(lineSep);
        srcBuffer.append("/**").append(lineSep);
        srcBuffer.append(" * GLS 3.3:").append(lineSep);
        srcBuffer.append(" * Implementations first recognize Unicode escapes in their input, translating ").append(lineSep);
        srcBuffer.append(" * the ASCII characters backslash and 'u' followed by four hexadecimal digits").append(lineSep);
        srcBuffer.append(" * to the Unicode character with the indicated hexadecimal value, and passing").append(lineSep);
        srcBuffer.append(" * all other characters unchanged.  ").append(lineSep);
        srcBuffer.append(" *").append(lineSep);
        srcBuffer.append(" * @author Alan Green").append(lineSep);
        srcBuffer.append(" */").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("class UnicodeEscapes2 extends GroovyTestCase {").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("    // GLS: If an even number of backslashes precede the 'u', it is not ").append(lineSep);
        srcBuffer.append("    // an escape").append(lineSep);
        srcBuffer.append("    void testCountBackslash() {").append(lineSep);
        srcBuffer.append("        def a = 1").append(lineSep);
        srcBuffer.append("        assert \\u0061 == 1 // char 61 is 'a'").append(lineSep);
        srcBuffer.append("        ").append(lineSep);
        srcBuffer.append("        // Not intepreted as an escape").append(lineSep);
        srcBuffer.append("           \\\\u0061 == 1 // @fail:parse").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("        assert \"\\u0061\".length() == 1").append(lineSep);
        srcBuffer.append("        // Double backslash interpreted as a single backslash in string").append(lineSep);
        srcBuffer.append("        assert \"\\\\u0061\".length() == 6").append(lineSep);
        srcBuffer.append("        assert \"\\\\\\u0061\".length() == 2").append(lineSep);
        srcBuffer.append("        ").append(lineSep);
        srcBuffer.append("    }").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("    // GLS: If an eligible \\ is followed by u, or more than one u, and the last u").append(lineSep);
        srcBuffer.append("    // is not followed by four hexadecimal digits, then a compile-time error").append(lineSep);
        srcBuffer.append("    // occurs.").append(lineSep);
        srcBuffer.append("    void testFourHexDigits() {").append(lineSep);
        srcBuffer.append("        // these next lines won't work. The backslash has been replace by a ").append(lineSep);
        srcBuffer.append("        // forwards slash so that the file parses. (Comments don't comment out").append(lineSep);
        srcBuffer.append("        // unicode escapes.)").append(lineSep);
        srcBuffer.append("        // assert \"/u7\" == \"\\07\" //@fail:parse ").append(lineSep);
        srcBuffer.append("        // def /u61 = 2 //@fail:parse ").append(lineSep);
        srcBuffer.append("        // def /u061 = 2 //@fail:parse ").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("        // If five digits, only the first four count").append(lineSep);
        srcBuffer.append("        def \\u00610 = 2 ").append(lineSep);
        srcBuffer.append("        assert a0 == 2").append(lineSep);
        srcBuffer.append("    }").append(lineSep);
        srcBuffer.append("    void testInvalidHexDigits() {").append(lineSep);
        srcBuffer.append("        // invalid hex digits").append(lineSep);
        srcBuffer.append("        // assert \"\\ufffg\" == \"a\" // @fail:parse").append(lineSep);
        srcBuffer.append("        // assert \"\\uu006g\" == \"a\" // @fail:parse").append(lineSep);
        srcBuffer.append("        // assert \"\\uab cd\" == \"acd\" // @fail:parse").append(lineSep);
        srcBuffer.append("    }").append(lineSep);
        srcBuffer.append("}").append(lineSep);
        try {
            helper.parse(srcBuffer.toString(),"testFailParse1");
            fail("This line did not fail to parse:  \\\\u0061 == 1 // @fail:parse");
        } catch (Exception e) {
            // ignore an exception as that is what we're hoping for in this case.
        }
    }
    public void testFailParse2() throws Throwable {
        StringBuffer srcBuffer = new StringBuffer();
        srcBuffer.append("package gls.ch03.s03").append(lineSep);
        srcBuffer.append("/**").append(lineSep);
        srcBuffer.append(" * GLS 3.3:").append(lineSep);
        srcBuffer.append(" * Implementations first recognize Unicode escapes in their input, translating ").append(lineSep);
        srcBuffer.append(" * the ASCII characters backslash and 'u' followed by four hexadecimal digits").append(lineSep);
        srcBuffer.append(" * to the Unicode character with the indicated hexadecimal value, and passing").append(lineSep);
        srcBuffer.append(" * all other characters unchanged.  ").append(lineSep);
        srcBuffer.append(" *").append(lineSep);
        srcBuffer.append(" * @author Alan Green").append(lineSep);
        srcBuffer.append(" */").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("class UnicodeEscapes2 extends GroovyTestCase {").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("    // GLS: If an even number of backslashes precede the 'u', it is not ").append(lineSep);
        srcBuffer.append("    // an escape").append(lineSep);
        srcBuffer.append("    void testCountBackslash() {").append(lineSep);
        srcBuffer.append("        def a = 1").append(lineSep);
        srcBuffer.append("        assert \\u0061 == 1 // char 61 is 'a'").append(lineSep);
        srcBuffer.append("        ").append(lineSep);
        srcBuffer.append("        // Not intepreted as an escape").append(lineSep);
        srcBuffer.append("        // \\\\u0061 == 1 // @fail:parse").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("        assert \"\\u0061\".length() == 1").append(lineSep);
        srcBuffer.append("        // Double backslash interpreted as a single backslash in string").append(lineSep);
        srcBuffer.append("        assert \"\\\\u0061\".length() == 6").append(lineSep);
        srcBuffer.append("        assert \"\\\\\\u0061\".length() == 2").append(lineSep);
        srcBuffer.append("        ").append(lineSep);
        srcBuffer.append("    }").append(lineSep);
        srcBuffer.append("").append(lineSep);
        srcBuffer.append("    // GLS: If an eligible \\ is followed by u, or more than one u, and the last u").append(lineSep);
        srcBuffer.append("    // is not followed by four hexadecimal digits, then a compile-time error").append(lineSep);
        srcBuffer.append("    // occurs.").append(lineSep);
        srcBuffer.append("    void testFourHexDigits() {").append(lineSep);