open-consul/ui-v2/tests/steps/assertions/page.js

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/* eslint no-console: "off" */
const notFound = 'Element 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 [notFound, cannotDestructure, cannotReadContext].some(item => e.message.startsWith(item));
};
export default function(scenario, assert, find, currentPage) {
scenario
.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 $component'], function(property, component) {
// TODO: Time to work on repetition
// Collection
var obj;
if (typeof currentPage()[component].objectAt === 'function') {
obj = currentPage()[component].objectAt(0);
} else {
obj = currentPage()[component];
}
let _component;
if (typeof obj === 'function') {
const func = obj[property].bind(obj);
try {
_component = func();
} catch (e) {
console.error(e);
throw new Error(
`The '${property}' property on the '${component}' page object doesn't exist`
);
}
} else {
_component = obj;
}
assert.ok(_component[property], `Expected to see ${property} on ${component}`);
})
.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 don't see $property on the $component"], function(property, component) {
const message = `Expected to not see ${property} on ${component}`;
// Cope with collections
let obj;
if (typeof currentPage()[component].objectAt === 'function') {
obj = currentPage()[component].objectAt(0);
} else {
obj = currentPage()[component];
}
let prop;
try {
prop = obj[property];
} catch (e) {
if (isExpectedError(e)) {
assert.ok(true, message);
} else {
throw e;
}
}
if (typeof prop === 'function') {
assert.throws(
function() {
prop();
},
function(e) {
return isExpectedError(e);
},
message
);
} else {
assert.notOk(prop);
}
})
.then(["I don't see $property"], function(property) {
const message = `Expected to not see ${property}`;
let prop;
try {
prop = currentPage()[property];
} catch (e) {
if (isExpectedError(e)) {
assert.ok(true, message);
} else {
throw e;
}
}
if (typeof prop === 'function') {
assert.throws(
function() {
prop();
},
function(e) {
return isExpectedError(e);
},
message
);
} else {
assert.notOk(prop);
}
})
.then(['I see $property'], function(property) {
assert.ok(currentPage()[property], `Expected to see ${property}`);
})
.then(
[
'I see $property on the $component like "$value"',
"I see $property on the $component like '$value'",
],
function(property, component, value) {
let target;
try {
if (typeof component === 'string') {
property = `${component}.${property}`;
}
target = find(property);
} catch (e) {
throw e;
}
assert.equal(
target,
value,
`Expected to see ${property} on ${component} as ${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}`);
});
}