function visit(value) {
if (util.isNothing(value)) return;
if (util.isCollection(value)) {
util.each(value, visit);
} else if (value instanceof OsmPrimitive) {
ret.add(value);
} else {
util.assert(false, "Unexpected object to add as OSM primitive, got {0}", value);
}
};
tu.test("isCollection - everything else isn't a collection", function() {
util.assert(!util.isCollection(null), "null isn't a collection");
util.assert(!util.isCollection(undefined), "undefined isn't a collection");
util.assert(!util.isCollection({}), "an object isn't a collection");
util.assert(!util.isCollection("foobar"), "an string isn't a collection");
})
tu.test("isCollection - list", function() {
util.assert(util.isCollection(new java.util.ArrayList()), "list should be a collection");
}),
tu.test("isCollection - arguments", function() {
util.assert(util.isCollection(arguments), "arguments should be a collection");
}),
tu.test("isCollection - array", function() {
util.assert(util.isCollection([]), "array should be a collection");
}),