cloverage

Simple clojure coverage tool.

Travis:

CircleCI:

Installation

Add to :plugins in your .lein/profiles.clj

Testing frameworks support

Cloverage uses clojure.test by default. If you prefer use midje, pass the --runner :midje flag. (In older versions of Cloverage, you had to wrap your midje tests in clojure.test's deftest. This is no longer necessary.) Other test libraries may ship with their own support for Cloverage external to this library; see their documentation for details.

Usage

lein

Run lein cloverage in your project. See cloverage/coverage.clj for more options.

To specify the version of cloverage manually, set the CLOVERAGE_VERSION to desired value, for example CLOVERAGE_VERSION=1.0.4-SNAPSHOT lein cloverage

By default, the plugin will use the latest release version of cloverage.

mvn

There is no maven plugin right now. A workaround is to import this library in the project being tested, then run: mvn exec:java -Dexec.classpathScope=test -Dexec.mainClass='clojure.main' -Dexec.args='--main cloverage.coverage *args-to-coverage*'

Where args-to-coverage will usually be something like "-n 'ns.regex.' -t 'text.ns.regex.'"

Troubleshooting

IllegalArgumentException No matching field found: foo for class user.Bar

IllegalArgumentException No matching field found: foo for class user.Bar  clojure.lang.Reflector.getInstanceField (Reflector.java:271)

This is usually caused by protocols with methods starting with -. Before clojure 1.6:

user=> (defprotocol Foo (-foo [x] x))
Foo
user=> (deftype Bar [] Foo (-foo [_] "foo"))
user.Bar
user=> (-foo (Bar.))
"foo"
user=> ((do -foo) (Bar.))

IllegalArgumentException No matching field found: foo for class user.Bar  clojure.lang.Reflector.getInstanceField (Reflector.java:271)

Since cloverage will wrap the -foo symbol to track whether it's accessed, you will get this error. Upgrade to clojure 1.6.

Coverage reports 0% coverage after running tests

This happens if there is a namespace in your project that requires itself, for example:

(ns foo.bar
  (:require [foo.bar :as bar]))

Remove the self-reference and the test coverage report should report correctly again.

License

Distributed under the Eclipse Public License, the same as Clojure.

Contributors

• 2015 LShift, Tom Parker
• 2012 LShift, Jacek Lach, Alexander Schmolck, Frank Shearar
• 2010 Michael Delaurentis

Mentions

Some code was taken from

• Java IO interop (clojure-contrib/duck-streams) by Stuart Sierra (see cloverage/source.clj)
• Topological sort (https://gist.github.com/1263783) by Alan Dipert (see cloverage/kahn.clj)