it('requests problems with the given problem number', function() {
index.popularAnswers({problemNumber: 42}, context);
expect(index.dynamodb.scan).toHaveBeenCalledWith({
Key: {problemNumber: 42},
TableName: 'learnjs'
}, jasmine.any(Function));
});
it('groups answers by minified code', function() {
index.popularAnswers({problemNumber: 1}, context);
index.dynamodb.scan.calls.first().args[1](undefined, {Items: [
{answer: "true"},
{answer: "true"},
{answer: "true"},
{answer: "!false"},
{answer: "!false"},
]});
expect(context.succeed).toHaveBeenCalledWith({"true": 3, "!false": 2});
});
it('limits the results to the top five', function() {
index.popularAnswers({problemNumber: 1}, context);
index.dynamodb.scan.calls.first().args[1](undefined, {Items: [
{answer: "1 === 1"},
{answer: "1 === 1"},
{answer: "2 === 2"},
{answer: "2 === 2"},
{answer: "2 === 2"},
{answer: "3 === 3"},
{answer: "3 === 3"},
{answer: "4 === 4"},
{answer: "4 === 4"},
{answer: "5 === 5"},
{answer: "5 === 5"},
{answer: "!false"},
]});
expect(context.succeed).toHaveBeenCalledWith({
"1 === 1": 2,
"2 === 2": 3,
"3 === 3": 2,
"4 === 4": 2,
"5 === 5": 2});
});
it('fails the request if dynamo returns an error', function() {
index.popularAnswers({problemNumber: 1}, context);
index.dynamodb.scan.calls.first().args[1]('error');
expect(context.fail).toHaveBeenCalledWith('error')
});