JUnitFormatter

A simple ExUnit Formatter that collects test results and generates an xml report in JUnit format. This is intended to be used by tools that can produce a graphical report, mainly targeted at Jenkins and its support for JUnit.

The report is generated in Mix.Project.app_path folder with a default filename of test-junit-report.xml. It can be configured through application configuration on the key report_file (application junit_formatter).

OBSERVATION

Versions 2+ require minimum Elixir version to be 1.4+. For older releases, please use version 1.3 of this library.

Usage

First, add JUnitFormatter to the dependencies in your mix.exs:

  defp deps do
    [
      {:junit_formatter, "~> 1.3", only: [:test]}
    ]
  end

Next, add JUnitFormatter to your ExUnit configuration in test/test_helper.exs file. It should look like this:

ExUnit.configure formatters: [JUnitFormatter]
ExUnit.start

If you want to keep using the default formatter alongside the JUnitFormatter your test/test_helper.exs file should look like this:

ExUnit.configure formatters: [JUnitFormatter, ExUnit.CLIFormatter]
ExUnit.start

Then run your tests like normal:

....

Finished in 0.1 seconds (0.07s on load, 0.08s on tests)
4 tests, 0 failures

Randomized with seed 600810

The JUnit style XML report for this project looks like this:

<?xml version="1.0"?>
<testsuites>
	<testsuite errors="0" failures="0" name="Elixir.FormatterTest" tests="4" time="82086">
		<testcase classname="Elixir.FormatterTest" name="test it counts raises as failures" time="16805"/>
		<testcase classname="Elixir.FormatterTest" name="test that an invalid test generates a proper report" time="16463"/>
		<testcase classname="Elixir.FormatterTest" name="test that a valid test generates a proper report" time="16328"/>
		<testcase classname="Elixir.FormatterTest" name="test valid and invalid tests generates a proper report" time="32490"/>
	</testsuite>
</testsuites>

note: this example has been reformatted for readability.

Options

JUnitFormatter accepts 2 options that can be passed in config.exs (or equivalent environment configuration for tests):

print_report_file (boolean - default false): tells formatter if you want to see the path where the file is being written to in the console (Logger.debug fn -> "Junit-formatter report at: #{report_path}" end). This might help you debug where the file is. By default it writes the report to the Mix.Project.app_path folder. This ensures compatibility with umbrella apps.
report_file (binary - default "test-junit-report.xml"): the name of the file to write to. It must contain the extension. 99% of the time you will want the extension to be .xml, but if you don't you can pass any extension (though the contents of the file will be an xml document).
report_dir (binary - default Mix.Project.app_path()): the directory to which the formatter will write the report. Do not end it with a slash. IMPORTANT!! JUnitFormatter will NOT create the directory. If you are pointing to a directory that is outside _build then it is your duty to clean it and to be sure it exists.

Example configuration:

config :junit_formatter,
  report_file: "report_file_test.xml",
  report_dir: "/tmp",
  print_report_file: true

LICENSE

This project is available under Apache Public License version 2.0. See LICENSE.