open-consul/ui/packages/consul-ui/tests/steps/assertions/page.js

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/* eslint no-console: "off" */
const elementNotFound = 'Element not found';
// this error comes from our pageObject `find `function
const pageObjectNotFound = 'PageObject not found';
const cannotDestructure = "Cannot destructure property 'context'";
const cannotReadContext = "Cannot read property 'context' of undefined";
// checking for existence of pageObjects is pretty difficult
// errors are thrown but we should check to make sure its the error that we
// want and not another real error
// to make things more difficult depending on how you reference the pageObject
// an error with a different message is thrown for example:
// pageObject[thing]() will give you a Element not found error
// whereas:
// const obj = pageObject[thing]; obj() will give you a 'cannot destructure error'
// and in CI it will give you a 'cannot read property' error
// the difference in CI could be a difference due to headless vs headed browser
// or difference in Chrome/browser versions
// ideally we wouldn't be checking on error messages at all, but we want to make sure
// that real errors are picked up by the tests, so if this gets unmanageable at any point
// look at checking for the instance of e being TypeError or similar
const isExpectedError = function(e) {
return [pageObjectNotFound, elementNotFound, cannotDestructure, cannotReadContext].some(item =>
e.message.startsWith(item)
);
};
const dont = `( don't| shouldn't| can't)?`;
export default function(scenario, assert, find, currentPage, $) {
scenario
.then([`I${dont} $verb the $pageObject object`], function(negative, verb, element, next) {
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let res = element[verb];
if (typeof res === 'function') {
res = res.call(element);
}
assert[negative ? 'notOk' : 'ok'](res, this.step);
setTimeout(() => next());
})
.then(
[
`I${dont} $verb the $pageObject object with value "$value"`,
`I${dont} $verb the $pageObject object from $yaml`,
],
function(negative, verb, element, data, next) {
assert[negative ? 'notOk' : 'ok'](element[verb](data));
setTimeout(() => next());
}
)
.then(`the $pageObject object is(n't)? $state`, function(element, negative, state, next) {
assert[negative ? 'notOk' : 'ok'](element[state]);
setTimeout(() => next());
})
.then(`I${dont} see $num of the $pageObject objects`, function(negative, num, element, next) {
assert[negative ? 'notEqual' : 'equal'](
element.length,
num,
`Expected to${negative ? ' not' : ''} see ${num} ${element.key}`
);
setTimeout(() => next());
})
.then(['I see $num of the $component object'], function(num, component) {
assert.equal(
currentPage()[component].length,
num,
`Expected to see ${num} items in the ${component} object`
);
})
.then('I see $property on the $component like yaml\n$yaml', function(
property,
component,
yaml
) {
const _component = currentPage()[component];
const iterator = new Array(_component.length).fill(true);
// this will catch if we get aren't managing to select a component
assert.ok(iterator.length > 0);
iterator.forEach(function(item, i, arr) {
const actual =
typeof _component.objectAt(i)[property] === 'undefined'
? null
: _component.objectAt(i)[property];
// anything coming from the DOM is going to be text/strings
// if the yaml has numbers, cast them to strings
// TODO: This would get problematic for deeper objects
// will have to look to do this recursively
const expected = typeof yaml[i] === 'number' ? yaml[i].toString() : yaml[i];
assert.deepEqual(
actual,
expected,
`Expected to see ${property} on ${component}[${i}] as ${JSON.stringify(
expected
)}, was ${JSON.stringify(actual)}`
);
});
})
.then('I see $property on the $component vertically like yaml\n$yaml', function(
property,
component,
yaml
) {
const _component = find(component);
const iterator = new Array(_component.length).fill(true);
assert.ok(iterator.length > 0);
const items = _component.toArray().sort((a, b) => {
return (
$(a.scope)
.get(0)
.getBoundingClientRect().top -
$(b.scope)
.get(0)
.getBoundingClientRect().top
);
});
iterator.forEach(function(item, i, arr) {
const actual = typeof items[i][property] === 'undefined' ? null : items[i][property];
const expected = typeof yaml[i] === 'number' ? yaml[i].toString() : yaml[i];
assert.deepEqual(
actual,
expected,
`Expected to see ${property} on ${component}[${i}] as ${JSON.stringify(
expected
)}, was ${JSON.stringify(actual)}`
);
});
})
.then([`I${dont} see $property`, `I${dont} see $property on the $component`], function(
negative,
property,
component
) {
const isNegative = typeof negative !== 'undefined';
let message = `Expected to${isNegative ? ' not' : ''} see ${property}`;
let target;
try {
if (typeof component === 'string') {
property = `${component}.${property}`;
message = `${message} on ${component}`;
}
target = find(property);
} catch (e) {
if (isNegative) {
if (isExpectedError(e)) {
assert.ok(true, message);
return Promise.resolve();
} else {
console.error(e);
throw e;
}
} else {
console.error(e);
throw e;
}
}
if (typeof target === 'function') {
if (isNegative) {
assert.throws(
function() {
target();
},
function(e) {
return isExpectedError(e);
},
message
);
return Promise.resolve();
} else {
try {
target = target();
} catch (e) {
console.error(e);
throw new Error(`The '${property}' page object doesn't exist`);
}
}
}
assert[isNegative ? 'notOk' : 'ok'](target, message);
return Promise.resolve();
})
.then(
[
`I see $property on the $component (contains|like) "$value"`,
`I see $property on the $component (contains|like) '$value'`,
],
function(property, component, containsLike, value) {
let target;
if (typeof component === 'string') {
property = `${component}.${property}`;
}
target = find(property);
if (containsLike === 'like') {
assert.equal(
target,
value,
`Expected to see ${property} on ${component} as ${value}, was ${target}`
);
} else {
assert.ok(
target.indexOf(value) !== -1,
`Expected to see ${property} on ${component} within ${value}, was ${target}`
);
}
}
)
.then(['I see $property like "$value"'], function(property, value) {
const target = currentPage()[property];
assert.equal(target, value, `Expected to see ${property} as ${value}, was ${target}`);
});
}