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//
// simple testing interface
// written by Einar Lielmanis, einar@jsbeautifier.org
//
// usage:
//
// var t = new SanityTest(function (x) { return x; }, 'my function');
// t.expect('input', 'output');
// t.expect('a', 'a');
// output_somewhere(t.results()); // good for <pre>, html safe-ish
// alert(t.results_raw()); // html unescaped
function SanityTest (func, name_of_test) {
var test_func = func || function (x) {
return x;
};
var test_name = name_of_test || '';
var n_failed = 0;
var n_succeeded = 0;
this.failures = [];
this.successes = [];
this.test_function = function(func, name) {
test_func = func;
test_name = name || '';
};
this.get_exitcode = function() {
return n_succeeded === 0 || n_failed !== 0 ? 1 : 0;
};
this.expect = function(parameters, expected_value) {
// multi-parameter calls not supported (I don't need them now).
var result = test_func(parameters);
// proper array checking is a pain. i'll maybe do it later, compare strings representations instead
if ((result === expected_value) || (expected_value instanceof Array && result.join(', ') == expected_value.join(', '))) {
n_succeeded += 1;
this.successes.push([test_name, parameters, expected_value, result]);
} else {
n_failed += 1;
this.failures.push([test_name, parameters, expected_value, result]);
}
};
this.results_raw = function() {
var results = '';
if (n_failed === 0) {
if (n_succeeded === 0) {
results = 'No tests run.';
} else {
results = 'All ' + n_succeeded + ' tests passed.';
}
} else {
for (var i = 0 ; i < this.failures.length; i++) {
var f = this.failures[i];
if (f[0]) {
f[0] = f[0] + ' ';
}
results += '---- ' + f[0] + 'input -------\n' + this.prettyprint(f[1]) + '\n';
results += '---- ' + f[0] + 'expected ----\n' + this.prettyprint(f[2]) + '\n';
results += '---- ' + f[0] + 'output ------\n' + this.prettyprint(f[3]) + '\n\n';
}
results += n_failed + ' tests failed.\n';
}
return results;
};
this.results = function() {
return this.lazy_escape(this.results_raw());
};
this.prettyprint = function(something, quote_strings) {
var type = typeof something;
switch(type.toLowerCase()) {
case 'string':
if (quote_strings) {
return "'" + something.replace("'", "\\'") + "'";
} else {
return something;
}
case 'number':
return '' + something;
case 'boolean':
return something ? 'true' : 'false';
case 'undefined':
return 'undefined';
case 'object':
if (something instanceof Array) {
var x = [];
var expected_index = 0;
for (var k in something) {
if (k == expected_index) {
x.push(this.prettyprint(something[k], true));
expected_index += 1;
} else {
x.push('\n' + k + ': ' + this.prettyprint(something[k], true));
}
}
return '[' + x.join(', ') + ']';
} else {
return 'object: ' + something;
}
default:
return type + ': ' + something;
}
};
this.lazy_escape = function (str) {
return str.replace(/</g, '<').replace(/\>/g, '>').replace(/\n/g, '<br />');
};
this.log = function () {
if (window.console) {
if (console.firebug) {
console.log.apply(console, Array.prototype.slice.call(arguments));
} else {
console.log.call(console, Array.prototype.slice.call(arguments));
}
}
};
}
if (typeof module !== 'undefined' && module.exports) {
module.exports = SanityTest;
}
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