lein-midje fails occasionally, 'lein clean' fixes it

[kolov]

After writing code and running 'lein midje' for a while occasionally midje breaks, I can't run more test, instead I get the stacktrace shown below. Running 'lein clean' (or 'lein do clean, midje') fixes it,

$ lein midje

Exception in thread "main" java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at clojure.lang.RT.loadClassForName(RT.java:2098)
at clojure.lang.RT.load(RT.java:430)
at clojure.lang.RT.load(RT.java:411)
at clojure.core$load$fn__5018.invoke(core.clj:5530)
at clojure.core$load.doInvoke(core.clj:5529)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.core$load_one.invoke(core.clj:5336)
at clojure.core$load_lib$fn__4967.invoke(core.clj:5375)
at clojure.core$load_lib.doInvoke(core.clj:5374)
at clojure.lang.RestFn.applyTo(RestFn.java:142)
at clojure.core$apply.invoke(core.clj:619)
at clojure.core$load_libs.doInvoke(core.clj:5413)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invoke(core.clj:619)
at clojure.core$require.doInvoke(core.clj:5496)
at clojure.lang.RestFn.invoke(RestFn.java:2088)
at midje.repl$eval15$loading__4910__auto____16.invoke(repl.clj:1)
at midje.repl$eval15.invoke(repl.clj:1)
at clojure.lang.Compiler.eval(Compiler.java:6619)
at clojure.lang.Compiler.eval(Compiler.java:6608)
at clojure.lang.Compiler.load(Compiler.java:7064)
at clojure.lang.RT.loadResourceScript(RT.java:370)
at clojure.lang.RT.loadResourceScript(RT.java:361)
at clojure.lang.RT.load(RT.java:440)
at clojure.lang.RT.load(RT.java:411)
at clojure.core$load$fn__5018.invoke(core.clj:5530)
at clojure.core$load.doInvoke(core.clj:5529)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.core$load_one.invoke(core.clj:5336)
at clojure.core$load_lib$fn__4967.invoke(core.clj:5375)
at clojure.core$load_lib.doInvoke(core.clj:5374)
at clojure.lang.RestFn.applyTo(RestFn.java:142)
at clojure.core$apply.invoke(core.clj:619)
at clojure.core$load_libs.doInvoke(core.clj:5413)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invoke(core.clj:619)
at clojure.core$require.doInvoke(core.clj:5496)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at user$eval11.invoke(form-init5306884430924513154.clj:1)
at clojure.lang.Compiler.eval(Compiler.java:6619)
at clojure.lang.Compiler.eval(Compiler.java:6609)
at clojure.lang.Compiler.eval(Compiler.java:6608)
at clojure.lang.Compiler.load(Compiler.java:7064)
at clojure.lang.Compiler.loadFile(Compiler.java:7020)
at clojure.main$load_script.invoke(main.clj:294)
at clojure.main$init_opt.invoke(main.clj:299)
at clojure.main$initialize.invoke(main.clj:327)
at clojure.main$null_opt.invoke(main.clj:362)
at clojure.main$main.doInvoke(main.clj:440)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.lang.Var.invoke(Var.java:419)
at clojure.lang.AFn.applyToHelper(AFn.java:163)
at clojure.lang.Var.applyTo(Var.java:532)
at clojure.main.main(main.java:37)
Caused by: java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333)
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988)
at clojure.lang.Namespace.find(Namespace.java:188)
at clojure.core$find_ns.invoke(core.clj:3728)
at clojure.core$the_ns.invoke(core.clj:3760)
at clojure.core$ns_name.invoke(core.clj:3767)
at midje.Bootstrap$bootstrap.invoke(Bootstrap.clj:8)
at midje.sweet__init.load(Unknown Source)
at midje.sweet__init.(Unknown Source)

[marick]

Have never seen this. What version of leiningen are you running?

[kolov]

Leiningen 2.3.3 on Java 1.7.0_45 Java HotSpot(TM) 64-Bit Server VM

I also have the following .midje:
(change-defaults :emitter 'midje-junit-formatter.core :print-level :print-facts)
with
:dev {:dependencies [[midje "1.5.1"] [midje-junit-formatter "0.1.0-SNAPSHOT"]] :plugins [... [lein-midje "3.0.0"] [test2junit "1.0.1"]]

[marick]

Someone commented on this:

The only time I see this is when I edit the namespace that contains all of my defrecords. Suddenly all of my instance of tests fail. It drove me nuts until I figured out what was going on.

I wonder if this is a similar situation.