michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: function run_test() {
michael@0:   do_check_matches({x:1}, {x:1});      // pass
michael@0:   todo_check_matches({x:1}, {});       // fail: all pattern props required
michael@0:   todo_check_matches({x:1}, {x:2});    // fail: values must match
michael@0:   do_check_matches({x:1}, {x:1, y:2}); // pass: extra props tolerated
michael@0: 
michael@0:   // Property order is irrelevant.
michael@0:   do_check_matches({x:"foo", y:"bar"}, {y:"bar", x:"foo"});// pass
michael@0: 
michael@0:   do_check_matches({x:undefined}, {x:1});// pass: 'undefined' is wildcard
michael@0:   do_check_matches({x:undefined}, {x:2});
michael@0:   todo_check_matches({x:undefined}, {y:2});// fail: 'x' must still be there
michael@0: 
michael@0:   // Patterns nest.
michael@0:   do_check_matches({a:1, b:{c:2,d:undefined}}, {a:1, b:{c:2,d:3}});
michael@0: 
michael@0:   // 'length' property counts, even if non-enumerable.
michael@0:   do_check_matches([3,4,5], [3,4,5]);    // pass
michael@0:   todo_check_matches([3,4,5], [3,5,5]);  // fail; value doesn't match
michael@0:   todo_check_matches([3,4,5], [3,4,5,6]);// fail; length doesn't match
michael@0: 
michael@0:   // functions in patterns get applied.
michael@0:   do_check_matches({foo:function (v) v.length == 2}, {foo:"hi"});// pass
michael@0:   todo_check_matches({foo:function (v) v.length == 2}, {bar:"hi"});// fail
michael@0:   todo_check_matches({foo:function (v) v.length == 2}, {foo:"hello"});// fail
michael@0: 
michael@0:   // We don't check constructors, prototypes, or classes. However, if
michael@0:   // pattern has a 'length' property, we require values to match that as
michael@0:   // well, even if 'length' is non-enumerable in the pattern. So arrays
michael@0:   // are useful as patterns.
michael@0:   do_check_matches({0:0, 1:1, length:2}, [0,1]); // pass
michael@0:   do_check_matches({0:1}, [1,2]);                // pass
michael@0:   do_check_matches([0], {0:0, length:1});        // pass
michael@0: }