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jest.config.js
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jest.config.js
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// For a detailed explanation regarding each configuration property, visit:
// https://jestjs.io/docs/en/configuration.html
module.exports = {
preset: "ts-jest",
// Automatically clear mock calls and instances between every test
clearMocks: true,
// An array of glob patterns indicating a set of files for which coverage information should be collected
collectCoverageFrom: ["<rootDir>/frontend/js/**/*.{ts,tsx,js,jsx}"],
// The directory where Jest should output its coverage files
coverageDirectory: "coverage",
// An array of file extensions your modules use
moduleFileExtensions: ["ts", "tsx", "js", "json", "jsx"],
// The paths to modules that run some code to configure or set up the testing environment before each test
setupFiles: ["<rootDir>/enzyme.config.ts", "jest-canvas-mock"],
setupFilesAfterEnv: [
"jest-location-mock",
"<rootDir>/frontend/js/tests/jest-setup.ts",
],
// The test environment that will be used for testing
testEnvironment: "jest-environment-jsdom",
// The glob patterns Jest uses to detect test files
testMatch: ["**/?(*.)+(spec|test).(ts|js)?(x)"],
// An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
testPathIgnorePatterns: ["\\\\node_modules\\\\"],
// This option sets the URL for the jsdom environment. It is reflected in properties such as location.href
testEnvironmentOptions: {
url: "http://localhost",
},
transform: {
"\\.[jt]sx?$": "ts-jest",
},
// An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
// Re-include d3 packages
transformIgnorePatterns: [
"<rootDir>/node_modules/(?!(d3-color|d3-scale-chromatic))",
],
// Indicates whether each individual test should be reported during the run
verbose: true,
snapshotSerializers: ["enzyme-to-json/serializer"],
snapshotFormat: {
escapeString: true,
printBasicPrototype: true,
},
};