Comments (2)
The whole idea of co is to write asynchronous flow in a synchronous way.
so If your function is a Thunk, co can "yield" it for you, or even better you can promisify your api :)
const zora = require('zora');
zora()
.test('thunk function', function * (t) {
let counter = 0;
const thunkFunctionToTest = function (cb) {
setTimeout(function () {
counter++;
cb();
}, 100) //asynchronous code !!!
};
yield thunkFunctionToTest;
t.equal(counter, 1);
})
.run();
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Perfect, thank you @lorenzofox3! I'm a little unfamiliar with the whole generator/yield thing, so you example helped me immensely. For anyone stumbling upon this in the future, here's my updated (working) code:
import zora from "zora";
import {Rect} from "d3plus-shape";
export default zora()
.test("render callback", function *(assert) {
function yieldFunction(cb) {
new Rect()
.data([{id: "test"}])
.render(cb);
}
yield yieldFunction;
assert.equal(document.getElementsByTagName("svg").length, 1);
});
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Related Issues (20)
- Difference to Tape / AVA? HOT 1
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- Structured comparison HOT 6
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- Improve diff reporter HOT 6
- Bad type-declaration for `throws` HOT 1
- Pipe error handling (write EPIPE) HOT 2
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- build npm package HOT 3
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