45 lines
1.1 KiB
Markdown
45 lines
1.1 KiB
Markdown
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// Asserting APIs:
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// - generated by Traceur (based on type annotations)
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// - can be also used in tests for instance
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assert.type(something, Type);
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assert.returnType(returnValue, Type);
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assert.argumentTypes(firstArg, Type, secondArg, Type);
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// this can be used anywhere in the code
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// (useful inside test, when we don't wanna define an interface)
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assert(value).is(...)
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// Custom type assert:
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// - i have a custom type
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// - adding an assert methos
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assert.define(MyUser, function(value) {
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assert(value).is(Type, Type2); // or
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assert(value, 'name').is(assert.string);
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assert(value, 'contact').is(assert.structure({
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email: assert.string,
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cell: assert.string
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}));
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assert(value, 'contacts').is(assert.arrayOf(assert.structure({email: assert.string})));
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});
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// Define interface (an empty type with assert method)
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// - returns an empty class with assert method
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var Email = assert.define('IEmail', function(value) {
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assert(value).is(String);
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if (value.indexOf('@') !== -1) {
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assert.fail('has to contain "@"');
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}
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});
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// Predefined types
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assert.string
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assert.number
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assert.boolean
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assert.arrayOf(...types)
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assert.structure(object)
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