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no-identical-title.js
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no-identical-title.js
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'use strict';
const getDocsUrl = require('./util').getDocsUrl;
const isDescribe = require('./util').isDescribe;
const isTestCase = require('./util').isTestCase;
const newDescribeContext = () => ({
describeTitles: [],
testTitles: [],
});
const handleTestCaseTitles = (context, titles, node, title) => {
if (isTestCase(node)) {
if (titles.indexOf(title) !== -1) {
context.report({
message: 'Test title is used multiple times in the same test suite.',
node,
});
}
titles.push(title);
}
};
const handleTestSuiteTitles = (context, titles, node, title) => {
if (!isDescribe(node)) {
return;
}
if (titles.indexOf(title) !== -1) {
context.report({
message: 'Test suite title is used multiple times.',
node,
});
}
titles.push(title);
};
const isFirstArgLiteral = node =>
node.arguments && node.arguments[0] && node.arguments[0].type === 'Literal';
module.exports = {
meta: {
docs: {
url: getDocsUrl('no-identical-title.md'),
},
},
create(context) {
const contexts = [newDescribeContext()];
return {
CallExpression(node) {
const currentLayer = contexts[contexts.length - 1];
if (isDescribe(node)) {
contexts.push(newDescribeContext());
}
if (!isFirstArgLiteral(node)) {
return;
}
const title = node.arguments[0].value;
handleTestCaseTitles(context, currentLayer.testTitles, node, title);
handleTestSuiteTitles(
context,
currentLayer.describeTitles,
node,
title
);
},
'CallExpression:exit'(node) {
if (isDescribe(node)) {
contexts.pop();
}
},
};
},
};