gecko/js/tests/lc3/StringMethods/string-001.js

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 * March 31, 1998.
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/**
 *  java.lang.String objects "inherit" JS string methods
 *
 *
 */
var SECTION = "java.lang.Strings using JavaScript String methods";
var VERSION = "1_4";
var TITLE   = "LiveConnect 3.0 " + SECTION;

startTest();

var jm = getMethods( "java.lang.String" );
var methods = new Array();

for ( var i = 0; i < jm.length; i++ ) {
    cm = jm[i].toString();
    methods[methods.length] = [ getMethodName(cm), getArguments(cm) ];
}

var a = new Array();

// These are methods of String.prototype  that differ from existing
// methods of java.lang.String in argument number or type, and but
// according to scott should still be overriden by java.lang.String
// methods. valueOf

a[a.length] = new TestObject(
    "var s"+a.length+" = new java.lang.String(\"hello\"); s"+a.length+".valueOf("+a.length+") +''",
    "s"+a.length,
    "valueOf",
    1,
    false,
    "0.0" );

// These are methods of String.prototype that should be overriden
// by methods of java.lang.String:
// toString  charAt indexOf lastIndexOf substring substring(int, int)
// toLowerCase toUpperCase

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"boo\"); s"+a.length+".toString() +''",
    "s"+a.length,
    "toString",
    0,
    false,
    "boo" );

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"JavaScript LiveConnect\"); s"+a.length+".charAt(0)",
    "s"+a.length,
    "charAt",
    1,
    false,
    "J".charCodeAt(0) );

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"JavaScript LiveConnect\"); s"+a.length+".indexOf(\"L\")",
    "s"+a.length,
    "indexOf",
    1,
    false,
    11 );


a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"JavaScript LiveConnect\"); s"+a.length+".lastIndexOf(\"t\")",
    "s"+a.length,
    "lastIndexOf",
    1,
    false,
    21 );

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"JavaScript LiveConnect\"); s"+a.length+".substring(\"11\") +''",
    "s"+a.length,
    "substring",
    1,
    false,
    "LiveConnect" );

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"JavaScript LiveConnect\"); s"+a.length+".substring(\"15\") +''",
    "s"+a.length,
    "substring",
    1,
    false,
    "Connect" );

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"JavaScript LiveConnect\"); s"+a.length+".substring(4,10) +''",
    "s"+a.length,
    "substring",
    2,
    false,
    "Script" );

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"JavaScript LiveConnect\"); s"+a.length+".toLowerCase() +''",
    "s"+a.length,
    "substring",
    0,
    false,
    "javascript liveconnect" );

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"JavaScript LiveConnect\"); s"+a.length+".toUpperCase() +''",
    "s"+a.length,
    "substring",
    0,
    false,
    "JAVASCRIPT LIVECONNECT" );

// These are methods of String.prototype but are not methods of
// java.lang.String, so they should not be overriden.  The method
// of the instance should be the same as the method of String.prototype
// fromCharCode charCodeAt constructor split

/* No longer valid in JDK 1.4: java.lang.String now has a split method. 

a[a.length] = new TestObject(
"var s" +a.length+" = new java.lang.String(\"0 1 2 3 4 5 6 7 8 9\"); s"+a.length+".split(\" \") +''",
"s"+a.length,
"split",
0,
true,
"0,1,2,3,4,5,6,7,8,9" );
*/

a[a.length] = new TestObject(
    "var s" +a.length+" = new java.lang.String(\"0 1 2 3 4 5 6 7 8 9\"); s"+a.length+".constructor",
    "s"+a.length,
    "constructor",
    0,
    true,
    String.prototype.constructor);


test();

// figure out what methods exist
// if there is no java method with the same name as a js method, should
// be able to invoke the js method without casting to a js string.  also
// the method should equal the same method of String.prototype.
// if there is a java method with the same name as a js method, invoking
// the method should call the java method

function TestObject( description, ob, method, argLength, override, expect ) {
    this.description = description;
    this.object = ob;
    this.method = method;
    this.override = override
        this.argLength = argLength;
    this.expect;

    this.result = eval(description);

    this.isJSMethod = eval( ob +"."+ method +" == String.prototype." + method );

    new TestCase(
	description,
	expect,
	this.result );

    if ( hasMethod( method, argLength )  ) {
	new TestCase(
	    ob +"." + method +" == String.prototype." + method,
	    override,
	    this.isJSMethod );

    } else  {
	// If the java class has no method with that name and number of
	// arguments, the value of the method should be the value of
	// String.prototype.methodName

	new TestCase(
	    ob +"." + method +" == String.prototype." + method,
	    override,
	    this.isJSMethod );
    }
}

function getMethods( javaString ) {
    return java.lang.Class.forName( javaString ).getMethods();
}
function isStatic( m ) {
    if ( m.lastIndexOf("static") > 0 ) {
	// static method, return true
	return true;
    }
    return false;
}
function getArguments( m ) {
    var argIndex = m.lastIndexOf("(", m.length());
    var argString = m.substr(argIndex+1, m.length() - argIndex -2);
    return argString.split( "," );
}
function getMethodName( m ) {
    var argIndex = m.lastIndexOf( "(", m.length());
    var nameIndex = m.lastIndexOf( ".", argIndex);
    return m.substr( nameIndex +1, argIndex - nameIndex -1 );
}
function hasMethod( m, noArgs ) {
    for ( var i = 0; i < methods.length; i++ ) {
	if ( (m == methods[i][0]) && (noArgs == methods[i][1].length)) {
	    return true;
	}
    }
    return false;
}