src/third_party/mozjs-45/js/src/tests/js1_8_5/reflect-parse/destructuring-function-parameters.js

// |reftest| skip-if(!xulRuntime.shell)
function test() {

var JS_HAS_EXPR_CLOSURES = true;

function testParamPatternCombinations(makePattSrc, makePattPatt) {
    var pattSrcs = makePatternCombinations(n => ("x" + n), makePattSrc);
    var pattPatts = makePatternCombinations(n => (ident("x" + n)), makePattPatt);

    for (var i = 0; i < pattSrcs.length; i++) {
        function makeSrc(body) {
            return "(function(" + pattSrcs[i].join(",") + ") " + body + ")";
        }
        function makePatt(body) {
            return funExpr(null, pattPatts[i], body);
        }

        // no upvars, block body
        assertExpr(makeSrc("{ }", makePatt(blockStmt([]))));
        // upvars, block body
        assertExpr(makeSrc("{ return [x1,x2,x3,x4,x5]; }"),
                   makePatt(blockStmt([returnStmt(arrExpr([ident("x1"), ident("x2"), ident("x3"), ident("x4"), ident("x5")]))])));
        if (JS_HAS_EXPR_CLOSURES) {
            // no upvars, expression body
            assertExpr(makeSrc("(0)"), makePatt(lit(0)));
            // upvars, expression body
            assertExpr(makeSrc("[x1,x2,x3,x4,x5]"),
                       makePatt(arrExpr([ident("x1"), ident("x2"), ident("x3"), ident("x4"), ident("x5")])));
        }
    }
}

testParamPatternCombinations(n => ("{a" + n + ":x" + n + "," + "b" + n + ":y" + n + "," + "c" + n + ":z" + n + "}"),
                             n => (objPatt([assignProp("a" + n, ident("x" + n)),
                                            assignProp("b" + n, ident("y" + n)),
                                            assignProp("c" + n, ident("z" + n))])));

testParamPatternCombinations(n => ("{a" + n + ":x" + n + " = 10," + "b" + n + ":y" + n + " = 10," + "c" + n + ":z" + n + " = 10}"),
                             n => (objPatt([assignProp("a" + n, ident("x" + n), lit(10)),
                                            assignProp("b" + n, ident("y" + n), lit(10)),
                                            assignProp("c" + n, ident("z" + n), lit(10))])));

testParamPatternCombinations(n => ("[x" + n + "," + "y" + n + "," + "z" + n + "]"),
                             n => (arrPatt([assignElem("x" + n), assignElem("y" + n), assignElem("z" + n)])));

testParamPatternCombinations(n => ("[a" + n + ", ..." + "b" + n + "]"),
                             n => (arrPatt([assignElem("a" + n), spread(ident("b" + n))])));

testParamPatternCombinations(n => ("[a" + n + ", " + "b" + n + " = 10]"),
                             n => (arrPatt([assignElem("a" + n), assignElem("b" + n, lit(10))])));

}

runtest(test);