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'use strict';
var should = require('chai').should();
var bch = require('../..');
var errors = bch.errors;
var $ = bch.util.preconditions;
var PrivateKey = bch.PrivateKey;
describe('preconditions', function() {
it('can be used to assert state', function() {
(function() {
$.checkState(false, 'testing');
}).should.throw(errors.InvalidState);
});
it('throws no false negative', function() {
(function() {
$.checkState(true, 'testing');
}).should.not.throw();
});
it('can be used to check an argument', function() {
(function() {
$.checkArgument(false, 'testing');
}).should.throw(errors.InvalidArgument);
(function() {
$.checkArgument(true, 'testing');
}).should.not.throw(errors.InvalidArgument);
});
it('can be used to check an argument type', function() {
var error;
try {
$.checkArgumentType(1, 'string', 'argumentName');
} catch (e) {
error = e;
e.message.should.equal('Invalid Argument for argumentName, expected string but got number');
}
should.exist(error);
});
it('has no false negatives when used to check an argument type', function() {
(function() {
$.checkArgumentType('a String', 'string', 'argumentName');
}).should.not.throw();
});
it('can be used to check an argument type for a class', function() {
var error;
try {
$.checkArgumentType(1, PrivateKey);
} catch (e) {
error = e;
var fail = !(~e.message.indexOf('Invalid Argument for (unknown name)'));
fail.should.equal(false);
}
should.exist(error);
});
it('has no false negatives when checking a type for a class', function() {
(function() {
$.checkArgumentType(new PrivateKey(), PrivateKey);
}).should.not.throw();
});
it('formats correctly a message on InvalidArgument()', function() {
var error = new errors.InvalidArgument();
error.message.should.equal('Invalid Argument');
});
it('formats correctly a message on checkArgument', function() {
var error;
try {
$.checkArgument(null, 'parameter must be provided');
} catch (e) {
error = e;
}
error.message.should.equal('Invalid Argument: parameter must be provided');
});
});