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var errors = require("errors");
exports.testCatchAndLog = function(test) {
var caught = [];
function dummyLog(e) { caught.push(e); }
var wrapped = errors.catchAndLog(function(x) {
throw Error("blah" + x + this);
},
"boop",
dummyLog);
test.assertEqual(wrapped.call("hi", 1), "boop",
"exceptions should be trapped, def. resp. returned");
test.assertEqual(caught.length, 1,
"logging function should be called");
test.assertEqual(caught[0].message, "blah1hi",
"args and this should be passed to wrapped func");
};
exports.testCatchAndLogProps = function(test) {
var caught = [];
function dummyLog(e) { caught.push(e); }
var thing = {
foo: function(x) { throw Error("nowai" + x); },
bar: function() { throw Error("blah"); },
baz: function() { throw Error("fnarg"); }
};
errors.catchAndLogProps(thing, "foo", "ugh", dummyLog);
test.assertEqual(thing.foo(1), "ugh",
"props should be wrapped");
test.assertEqual(caught.length, 1,
"logging function should be called");
test.assertEqual(caught[0].message, "nowai1",
"args should be passed to wrapped func");
test.assertRaises(function() { thing.bar(); },
"blah",
"non-wrapped props should be wrapped");
errors.catchAndLogProps(thing, ["bar", "baz"], "err", dummyLog);
test.assert((thing.bar() == thing.baz()) &&
(thing.bar() == "err"),
"multiple props should be wrapped if array passed in");
};
exports.testCatchAndReturn = function(test) {
var wrapped = errors.catchAndReturn(function(x) {
if (x == 1)
return "one";
if (x == 2)
throw new Error("two");
return this + x;
});
test.assertEqual(wrapped(1).returnValue, "one",
"arg should be passed; return value should be returned");
test.assert(wrapped(2).exception, "exception should be returned");
test.assertEqual(wrapped(2).exception.message, "two", "message is correct");
test.assert(wrapped(2).exception.fileName.indexOf("test-errors.js") != -1,
"filename is present");
test.assert(wrapped(2).exception.stack, "stack is available");
test.assertEqual(wrapped.call("hi", 3).returnValue, "hi3",
"`this` should be set correctly");
};
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