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var assert = require('assert');
var mockery = require('mockery');
var sinon = require('sinon');
var PodcastView; // Subject of the test
var dynamoStub;
var s3Stub;
var view456 = {
feedId: '123',
viewId: '456',
name: 'Test View',
template: 'Hello World'
};
var view789 = {
feedId: '123',
viewId: '789',
name: 'Test View 2',
template: 'Goodbye World'
};
var episodes = [
{ title: 'Episode 1' },
{ title: 'Episode 2' },
];
describe('PodcastView', function() {
before(function() {
mockery.enable({warnOnUnregistered: false});
});
beforeEach(function() {
mockery.registerAllowable('underscore');
mockery.registerMock('dynamodb-doc', { DynamoDB: function() { return dynamoStub } });
dynamoStub = {
getItem: sinon.stub(),
query: sinon.stub(),
};
mockery.registerMock('aws-sdk', { S3: function() { return s3Stub } });
s3Stub = {
putObject: sinon.stub(),
};
mockery.registerAllowable('../lib/PodcastView', true);
PodcastView = require('../lib/PodcastView');
});
it('calls the callback with a view when findById is called with a valid viewId', function() {
// Setup stubs
dynamoStub
.getItem
.withArgs({
TableName: 'podcast-views',
Key: { feedId: '123', viewId: '456' }
})
.callsArgWith(1, null, {
Item: view456
});
var callback = sinon.spy();
// Call findById
PodcastView.findById({ feedId: '123', viewId: '456' }, callback);
// Assertions
assert(callback.calledOnce);
var error = callback.getCall(0).args[0];
var view = callback.getCall(0).args[1];
assert.equal(error, null);
assert.equal(view.feedId, '123');
assert.equal(view.viewId, '456');
assert.equal(view.name, 'Test View');
assert.equal(view.template, 'Hello World');
});
it('calls the callback with each view when forEachView is called', function() {
// Setup stubs
dynamoStub
.query
.withArgs(
{
TableName: 'podcast-views',
KeyConditionExpression: "feedId = :feedId",
ExpressionAttributeValues: {
':feedId': '123'
}
})
.callsArgWith(1, null, {
Items: [view456, view789]
});
var callback = sinon.spy();
// Call findById
PodcastView.forEachView('123', callback);
// Assertions
assert(callback.calledTwice);
var error = callback.getCall(0).args[0];
var view = callback.getCall(0).args[1];
var last = callback.getCall(0).args[2];
assert.equal(error, null);
assert.equal(view.feedId, '123');
assert.equal(view.viewId, '456');
assert.equal(view.name, 'Test View');
assert.equal(view.template, 'Hello World');
assert(!last);
var error = callback.getCall(1).args[0];
var view = callback.getCall(1).args[1];
var last = callback.getCall(1).args[2];
assert.equal(error, null);
assert.equal(view.feedId, '123');
assert.equal(view.viewId, '789');
assert.equal(view.name, 'Test View 2');
assert.equal(view.template, 'Goodbye World');
assert(last);
});
it("calls the callback with each view when forEachView's query is truncated", function() {
// Setup stubs
dynamoStub
.query
.withArgs(
{
TableName: 'podcast-views',
KeyConditionExpression: "feedId = :feedId",
ExpressionAttributeValues: {
':feedId': '123'
}
})
.callsArgWith(1, null, {
Items: [view456],
LastEvaluatedKey: { feedId: '123', viewId: '456' }
});
dynamoStub
.query
.withArgs(
{
TableName: 'podcast-views',
KeyConditionExpression: "feedId = :feedId",
ExpressionAttributeValues: {
':feedId': '123'
},
ExclusiveStartKey: { feedId: '123', viewId: '456' },
})
.callsArgWith(1, null, {
Items: [view789],
});
var callback = sinon.spy();
// Call findById
PodcastView.forEachView('123', callback);
// Assertions
assert(callback.calledTwice);
var error = callback.getCall(0).args[0];
var view = callback.getCall(0).args[1];
var last = callback.getCall(0).args[2];
assert.equal(error, null);
assert.equal(view.feedId, '123');
assert.equal(view.viewId, '456');
assert.equal(view.name, 'Test View');
assert.equal(view.template, 'Hello World');
assert(!last);
var error = callback.getCall(1).args[0];
var view = callback.getCall(1).args[1];
var last = callback.getCall(1).args[2];
assert.equal(error, null);
assert.equal(view.feedId, '123');
assert.equal(view.viewId, '789');
assert.equal(view.name, 'Test View 2');
assert.equal(view.template, 'Goodbye World');
assert(last);
});
it('uploads an artifact when render is called', function() {
// Setup the test.
s3Stub.putObject.onFirstCall().callsArgWith(1, null);
var view = new PodcastView({
bucket: 'test-bucket',
filenameTemplate: 'episodes.html',
template: '<% _.each(episodes, function(episode) { %><h1><%= episode.title %></h1><% }); %>',
});
var callback = sinon.stub();
// Render
view.render(episodes, callback);
// Verify the correct artifact was rendered.
assert(s3Stub.putObject.calledOnce);
var params = s3Stub.putObject.getCall(0).args[0];
assert.equal(params.Bucket, 'test-bucket');
assert.equal(params.Key, 'episodes.html');
assert.equal(params.Body, '<h1>Episode 1</h1><h1>Episode 2</h1>');
// Verify the callback was called.
assert(callback.calledOnce);
});
it('uploads multiple artifacts when render is called and renderEach is true', function() {
// Setup the test.
s3Stub.putObject.onFirstCall().callsArgWith(1, null);
s3Stub.putObject.onSecondCall().callsArgWith(1, null);
var view = new PodcastView({
bucket: 'test-bucket',
filenameTemplate: '<%= episode.title.toLowerCase().replace(/[^\w ]+/g,'').replace(/ +/g,'-') %>.html',
template: '<h1><%= episode.title %></h1>',
renderEach: true,
});
var callback = sinon.stub();
// Render
view.render(episodes, callback);
// Verify the correct artifact was rendered.
assert.equal(s3Stub.putObject.callCount, 2);
var params = s3Stub.putObject.getCall(0).args[0];
assert.equal(params.Bucket, 'test-bucket');
assert.equal(params.Key, 'episode-1.html');
assert.equal(params.Body, '<h1>Episode 1</h1>');
var params = s3Stub.putObject.getCall(1).args[0];
assert.equal(params.Bucket, 'test-bucket');
assert.equal(params.Key, 'episode-2.html');
assert.equal(params.Body, '<h1>Episode 2</h1>');
// Verify the callback was called.
assert(callback.calledOnce);
});
afterEach(function() {
mockery.deregisterAll();
}),
after(function() {
mockery.disable();
});
});
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