jest-junit

A Jest reporter that creates compatible junit xml files

Note: as of jest-junit 11.0.0 NodeJS >= 10.12.0 is required.

Installation

npm install --save-dev jest-junit

Usage

In your jest config add the following entry:

{
  "reporters": [ "default", "jest-junit" ]
}

Then simply run:

jest

For your Continuous Integration you can simply do:

jest --ci --reporters=default --reporters=jest-junit

Usage as testResultsProcessor (deprecated)

The support for testResultsProcessor is only kept for legacy reasons and might be removed in the future. You should therefore prefer to configure jest-junit as a reporter.

Should you still want to, add the following entry to your jest config:

{
  "testResultsProcessor": "jest-junit"
}

Then simply run:

jest

For your Continuous Integration you can simply do:

jest --ci --testResultsProcessor="jest-junit"

Configuration

jest-junit offers several configurations based on environment variables or a jest-junit key defined in package.json or a reporter option. Environment variable and package.json configuration should be strings. Reporter options should also be strings exception for suiteNameTemplate, classNameTemplate, titleNameTemplate that can also accept a function returning a string.

Environment Variable Name	Reporter Config Name	Description	Default	Possible Injection Values
JEST_SUITE_NAME	suiteName	name attribute of <testsuites>	"jest tests"	N/A
JEST_JUNIT_OUTPUT_DIR	outputDirectory	Directory to save the output. Relative path outside of project root (e.g. in monorepos) has to be prefixed with <rootDir> literal, e.g. <rootDir>/../coverage	process.cwd()	N/A
JEST_JUNIT_OUTPUT_NAME	outputName	File name for the output.	"junit.xml"	N/A
JEST_JUNIT_OUTPUT_FILE	outputFile	Fullpath for the output. If defined, outputDirectory and outputName will be overridden	undefined	N/A
JEST_JUNIT_UNIQUE_OUTPUT_NAME	uniqueOutputName	Create unique file name for the output leveraging the outputName as a prefix if given ${outputName}-${uuid}.xml or a default of junit.xml-${uuid}.xml if outputName is not specified, overrides outputName	false	N/A
JEST_JUNIT_SUITE_NAME	suiteNameTemplate	Template string for name attribute of the <testsuite>.	"{title}"	{title}, {filepath}, {filename}, {displayName}
JEST_JUNIT_CLASSNAME	classNameTemplate	Template string for the classname attribute of <testcase>.	"{classname} {title}"	{classname}, {title}, {suitename}, {filepath}, {filename}, {displayName}

You can configure these options via the command line as seen below:

JEST_SUITE_NAME="Jest JUnit Unit Tests" JEST_JUNIT_OUTPUT_DIR="./artifacts" jest

Or you can also define a jest-junit key in your package.json. All are string values.

{
  ...
  "jest-junit": {
    "suiteName": "jest tests",
    "outputDirectory": ".",
    "outputName": "junit.xml",
    "uniqueOutputName": "false",
    "classNameTemplate": "{classname}-{title}",
    "titleTemplate": "{classname}-{title}",
    "ancestorSeparator": " › ",
    "usePathForSuiteName": "true"
  }
}

Or you can define your options in your reporter configuration.

// jest.config.js
{
  reporters: [
    "default",
    [ "jest-junit", { suiteName: "jest tests" } ]
  ]
}

Configuration Precedence

If using the usePathForSuiteName and suiteNameTemplate, the usePathForSuiteName value will take precedence. ie: if usePathForSuiteName=true and suiteNameTemplate="{filename}", the filepath will be used as the name attribute of the <testsuite> in the rendered jest-junit.xml).

Examples

Below are some example configuration values and the rendered .xml to created by jest-junit.

The following test defined in the file /__tests__/addition.test.js will be used for all examples:

describe('addition', () => {
  describe('positive numbers', () => {
    it('should add up', () => {
      expect(1 + 2).toBe(3);
    });
  });
});

Example 1

The default output:

<testsuites name="jest tests">
  <testsuite name="addition" tests="1" errors="0" failures="0" skipped="0" timestamp="2017-07-13T09:42:28" time="0.161">
    <testcase classname="addition positive numbers should add up" name="addition positive numbers should add up" time="0.004">
    </testcase>
  </testsuite>
</testsuites>

Example 2

Using the classNameTemplate and titleTemplate:

JEST_JUNIT_CLASSNAME="{classname}" JEST_JUNIT_TITLE="{title}" jest

renders

<testsuites name="jest tests">
  <testsuite name="addition" tests="1" errors="0" failures="0" skipped="0" timestamp="2017-07-13T09:45:42" time="0.154">
    <testcase classname="addition positive numbers" name="should add up" time="0.005">
    </testcase>
  </testsuite>
</testsuites>

Example 3

Using the ancestorSeparator:

JEST_JUNIT_ANCESTOR_SEPARATOR=" › " jest

renders

<testsuites name="jest tests">
  <testsuite name="addition" tests="1" errors="0" failures="0" skipped="0" timestamp="2017-07-13T09:47:12" time="0.162">
    <testcase classname="addition › positive numbers should add up" name="addition › positive numbers should add up" time="0.004">
    </testcase>
  </testsuite>
</testsuites>

Example 4

Using the suiteNameTemplate:

JEST_JUNIT_SUITE_NAME ="{filename}" jest

<testsuites name="jest tests">
  <testsuite name="addition.test.js" tests="1" errors="0" failures="0" skipped="0" timestamp="2017-07-13T09:42:28" time="0.161">
    <testcase classname="addition positive numbers should add up" name="addition positive numbers should add up" time="0.004">
    </testcase>
  </testsuite>
</testsuites>

Example 5

Using classNameTemplate as a function in reporter options

// jest.config.js
{
  reporters: [
    "default",
      [
        "jest-junit",
        {
          classNameTemplate: (vars) => {
            return vars.classname.toUpperCase();
          }
        }
      ]
  ]
}

renders

<testsuites name="jest tests">
  <testsuite name="addition" tests="1" errors="0" failures="0" skipped="0" timestamp="2017-07-13T09:42:28" time="0.161">
    <testcase classname="ADDITION POSITIVE NUMBERS" name="addition positive numbers should add up" time="0.004">
    </testcase>
  </testsuite>
</testsuites>

Adding custom testsuite properties

New feature as of jest-junit 11.0.0!

Create a file in your project root directory named junitProperties.js:

module.exports = () => {
  return {
    key: "value",
  };
};

Will render

<testsuites name="jest tests">
  <testsuite name="addition" tests="1" errors="0" failures="0" skipped="0" timestamp="2017-07-13T09:42:28" time="0.161">
    <properties>
      <property name="key" value="value" />
    </properties>
    <testcase classname="addition positive numbers should add up" name="addition positive numbers should add up" time="0.004">
    </testcase>
  </testsuite>
</testsuites>

Adding custom testcase properties

Create a file in your project root directory named junitTestCaseProperties.js:

module.exports = (testResult) => {
  return {
    "dd_tags[test.invocations]": testResult.invocations,
  };
};

Will render

<testsuites name="jest tests">
  <testsuite name="addition" tests="1" errors="0" failures="0" skipped="0" timestamp="2017-07-13T09:42:28" time="0.161">
    <testcase classname="addition positive numbers should add up" name="addition positive numbers should add up" time="0.004">
      <properties>
        <property name="dd_tags[test.invocations]" value="1" />
      </properties>
    </testcase>
  </testsuite>
</testsuites>

WARNING: Properties for testcases is not following standard JUnit XML schema. However, other consumers may support properties for testcases like DataDog metadata through <property> elements