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relationTests.js
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relationTests.js
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var util = require('util'),
nohm = require(__dirname+'/../lib/nohm').Nohm,
redis = nohm.client,
relationsprefix = nohm.prefix.relations,
UserLinkMockup = nohm.model('UserLinkMockup', {
properties: {
name: {
type: 'string',
defaultValue: 'testName',
validations: [
'notEmpty'
]
}
},
idGenerator: 'increment'
}),
CommentLinkMockup = nohm.model('CommentLinkMockup', {
properties: {
text: {
type: 'string',
defaultValue: 'this is a comment! REALLY!',
validations: [
'notEmpty'
]
}
},
idGenerator: 'increment'
}),
RoleLinkMockup = nohm.model('RoleLinkMockup', {
properties: {
name: {
type: 'string',
defaultValue: 'user'
}
},
idGenerator: 'increment'
});
exports.instances = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
role2;
t.expect(2);
role.link(user);
t.ok(role.relationChanges !== user.relationChanges, 'Instances share the relationchanges, initiate them as an empty array in the constructor.');
role2 = new RoleLinkMockup();
t.same(role2.relationChanges, [], 'Creating a new instance does not reset the relationchanges of that instance.');
t.done();
};
exports.link = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
role2 = new RoleLinkMockup(),
linkCallbackCalled = false,
linkCallbackCalled2 = false;
t.expect(9);
user.link(role, function (action, on, name, obj) {
linkCallbackCalled = true;
t.equals(action, 'link', 'The argument "action" given to the link callback are not correct');
t.equals(on, 'UserLinkMockup', 'The argument "on" given to the link callback are not correct');
t.equals(name, 'child', 'The argument "name" given to the link callback are not correct');
t.same(obj, role, 'The argument "obj" given to the link callback are not correct');
});
role2.p('name', 'test');
user.link(role2, function (action, on, name, obj) {
linkCallbackCalled2 = true;
});
user.save(function (err) {
if (!err) {
t.ok(linkCallbackCalled, 'The provided callback for linking was not called.');
t.ok(linkCallbackCalled2, 'The provided callback for the second(!) linking was not called.');
redis.keys(relationsprefix + '*', function (err, values) {
var args = [],
key,
firstDone = false,
keyCheck = function (err, members) {
t.equals(members[0], '1', 'The set of a relationship contained a wrong member');
if (firstDone === true) {
t.done();
} else {
firstDone = true;
}
};
if (!err) {
t.ok(values.length === 3, 'Linking an object did not create the correct number of keys.');
redis.smembers(values[0].toString(), keyCheck);
redis.smembers(values[1].toString(), keyCheck);
} else {
console.dir(err);
t.done();
}
});
} else {
console.dir(err);
t.done();
}
});
};
exports.unlink = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
role2 = new RoleLinkMockup(),
unlinkCallbackCalled = false,
unlinkCallbackCalled2 = false;
t.expect(7);
user.id = 1;
role.id = 1;
role2.id = 2;
user.unlink(role, function (action, on, name, obj) {
unlinkCallbackCalled = true;
t.equals(action, 'unlink', 'The argument "action" given to the unlink callback are not correct');
t.equals(on, 'UserLinkMockup', 'The argument "on" given to the unlink callback are not correct');
t.equals(name, 'child', 'The argument "name" given to the unlink callback are not correct');
t.equals(obj, role, 'The argument "obj" given to the unlink callback are not correct');
});
user.unlink(role2, function (action, on, name, obj) {
unlinkCallbackCalled2 = true;
});
user.save(function (err) {
if (!err) {
t.ok(unlinkCallbackCalled, 'The provided callback for unlinking was not called.');
t.ok(unlinkCallbackCalled2, 'The provided callback for the second(!) unlinking was not called.');
redis.keys(relationsprefix + '*', function (err, value) {
if (!err) {
var check = (Array.isArray(value) && value.length === 0) || value === null;
t.ok(check, 'Unlinking an object did not delete keys.');
}
t.done();
});
} else {
console.dir(err);
console.dir(user.errors);
t.done();
}
});
};
exports.deeplink = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
comment = new CommentLinkMockup(),
userLinkCallbackCalled = false,
commentLinkCallbackCalled = false;
t.expect(5);
role.link(user, function (action, on, name, obj) {
userLinkCallbackCalled = true;
});
user.link(comment, function (action, on, name, obj) {
commentLinkCallbackCalled = true;
});
role.save(function (err) {
if (err) {
console.dir(err);
t.done();
}
t.ok(userLinkCallbackCalled, 'The user link callback was not called.');
t.ok(commentLinkCallbackCalled, 'The comment link callback was not called.');
t.ok(user.id !== null, 'The deeplinked user does not have an id and thus is probably not saved correctly.');
t.ok(comment.id !== null, 'The deeplinked comment does not have an id and thus is probably not saved correctly.');
redis.smembers(relationsprefix + comment.modelName + ':parent:' +
user.modelName + ':' + comment.id,
function (err, value) {
if (!err) {
t.equals(value, user.id, 'The user does not have the neccessary relations saved. There are probably more problems, if this occurs.');
} else {
console.dir(err);
}
t.done();
});
});
};
exports.removeUnlinks = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
role2 = new RoleLinkMockup(),
comment = new CommentLinkMockup(),
linkName = 'creator';
t.expect(9);
user.p('name', 'removeUnlinks');
user.link(role, linkName);
user.link(comment);
role2.link(user);
role2.save(function (err) {
if (err) {
console.dir(err);
t.done();
}
var tmpid = user.id;
user.remove(function (err) {
t.ok(!err, 'An unexpected redis error occured.');
redis.exists(relationsprefix + user.modelName + ':'+linkName+':' +
role.modelName + ':' + tmpid, function (err, value) {
t.ok(!err, 'An unexpected redis error occured.');
t.equals(value, 0, 'The link to the custom-link-name role was not deleted');
redis.exists(relationsprefix + user.modelName + ':child:' +
comment.modelName + ':' + tmpid, function (err, value) {
t.ok(!err, 'An unexpected redis error occured.');
t.equals(value, 0, 'The link to the child comment was not deleted');
redis.sismember(relationsprefix + comment.modelName + ':parent:' +
user.modelName + ':' + comment.id, tmpid,
function (err, value) {
t.ok(!err, 'An unexpected redis error occured.');
t.equals(value, 0, 'The link to the comment parent was not deleted');
redis.sismember(relationsprefix + role2.modelName + ':child:' +
user.modelName + ':' + role2.id, tmpid,
function (err, value) {
t.ok(!err, 'An unexpected redis error occured.');
t.equals(value, 0, 'The removal did not delete the link from a parent to the object itself.');
t.done();
});
});
});
});
});
});
};
exports.belongsTo = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup();
t.expect(1);
user.link(role);
user.save(function (err) {
if (err) {
console.dir(err);
t.done();
}
user.belongsTo(role, function (err, value) {
if (err) {
console.dir(err);
t.done();
}
t.equals(value, true, 'The link was not detected correctly by belongsTo()');
t.done();
});
});
};
exports.getAll = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
role2 = new RoleLinkMockup();
t.expect(4);
user.link(role);
user.link(role2);
user.save(function (err) {
if (err) {
console.dir(err);
t.done();
}
var should = [role.id, role2.id];
user.getAll(role.modelName, function (err, values) {
if (err) {
console.dir(err);
t.done();
}
t.ok(Array.isArray(values), 'getAll() did not return an array.');
for (var index, i = 0, len = values.length; i < len; i = i + 1) {
index = should.indexOf(values[i]);
t.ok(index !== -1, 'getAll() returned an array with wrong values');
delete should[index];
delete values[i];
}
t.same(values, should, 'getAll() did not return the correct array');
t.done();
});
});
};
exports.numLinks = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
role2 = new RoleLinkMockup();
t.expect(1);
user.link(role);
user.link(role2);
user.save(function (err) {
if (err) {
console.dir(err);
t.done();
}
user.numLinks(role.modelName, function (err, value) {
if (err) {
console.dir(err);
t.done();
}
t.same(value, 2, 'The number of links was not returned correctly');
t.done();
});
});
};
exports.deeplinkError = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
comment = new CommentLinkMockup(),
userLinkCallbackCalled = false,
commentLinkCallbackCalled = false;
t.expect(5);
role.link(user);
user.link(comment);
comment.p('text', ''); // makes the comment fail
role.save(function (err, childFail, childName) {
t.ok(user.id !== null, 'The deeplinked user does not have an id and thus is probably not saved correctly.');
t.same(comment.id, null, 'The deeplinked erroneous comment does not have an id and thus is probably saved.');
t.same(err, 'invalid', 'The deeplinked role did not fail.');
t.same(childFail, true, 'The deeplinked role did not fail in a child or reported it wrong.');
t.same(childName, 'CommentLinkMockup', 'The deeplinked role failed in the wrong model or reported it wrong.');
t.done();
});
};
exports.linkToSelf = function (t) {
var user = new UserLinkMockup();
t.expect(1);
user.link(user);
user.save(function (err) {
t.ok(!err, 'Linking an object to itself failed.');
t.done();
});
};
/* Maybe this isn't such a good idea. I like that model definitions are completely
lacking relation definitions.
exports.cascadingDeletes = function (t) {
var user = new UserLinkMockup(),
role = new RoleLinkMockup(),
comment = new CommentLinkMockup(),
testComment = new CommentLinkMockup();
t.expect(1);
user.link(role);
role.link(comment);
user.save(function (err) {
if (err) {
console.dir(err);
t.done();
}
var testid = comment.id;
user.remove(function (err) {
if (err) {
console.dir(err);
t.done();
}
testComment.load(testid, function (err) {
t.equals(err, 'not found', 'Removing an object that has cascading deletes did not remove the relations');
t.done();
});
});
});
};*/