[bug#28250] slf4j-api: enable tests

[Julien Lepiller <julien@lepiller.eu>]

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Hi,

I found what prevented the tests to pass in slf4j-api. In
slf4j-api/pom.xml, the jar file is created with all classes, except
those in impl/.

I did the same with a new pase where I delete the impl/ directory and
regenerate the jar file. Maybe I should fix teh build.xml file instead?

Then, tests pass except for one file. This file is an abstract class
meant to be extended by other test cases, but it's not a test case in
itself, hence the failure. This time, I implemented another phase where
I fix the build.xml file to exclude this file from testing.

I'm working on other packages, and it's not the first time I see some
tests I need to disable because they shouldn't be run. Maybe I could
add arguments to the ant build system, such as #:test-include and
#:test-exclude, defaulting to '("**/*.java") and '() respectively?

Thank you :)

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From 2a9b0420c249b4b896f5980a55be8ae5595bd96b Mon Sep 17 00:00:00 2001
From: Julien Lepiller <julien@lepiller.eu>
Date: Sun, 27 Aug 2017 13:19:31 +0200
Subject: [PATCH] gnu: java-slf4j-api: Fix tests.

* gnu/packages/java.scm (java-slf4j-api)[arguments]: Enable tests
Adjust the jar content to prevent a test failure.
---
 gnu/packages/java.scm | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
index da68487b0..caa76f335 100644
--- a/gnu/packages/java.scm
+++ b/gnu/packages/java.scm
@@ -4170,12 +4170,26 @@ more efficient storage-wise than an uncompressed bitmap (as implemented in the
                   #t))))
     (build-system ant-build-system)
     (arguments
-     ;; FIXME: org.slf4j.NoBindingTest fails with the ominous "This code
-     ;; should have never made it into slf4j-api.jar".
-     `(#:tests? #f
-       #:jar-name "slf4j-api.jar"
+     `(#:jar-name "slf4j-api.jar"
        #:source-dir "slf4j-api/src/main"
-       #:test-dir "slf4j-api/src/test"))
+       #:test-dir "slf4j-api/src/test"
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'build 'regenerate-jar
+           (lambda _
+             ;; pom.xml ignores these files in the jar creation process. If we don't,
+             ;; we get the error "This code should have never made it into slf4j-api.jar"
+             (delete-file-recursively "build/classes/org/slf4j/impl")
+             (zero? (system* "jar" "-cf" "build/jar/slf4j-api.jar" "-C"
+                             "build/classes" "."))))
+         (add-before 'check 'dont-test-abstract-classes
+           (lambda _
+             ;; abstract classes are not meant to be run with junit
+             (substitute* "build.xml"
+               (("<include name=\"\\*\\*/\\*Test.java\" />")
+                (string-append "<include name=\"**/*Test.java\" />"
+                               "<exclude name=\"**/MultithreadedInitializationTest"
+                               ".java\" />"))))))))
     (inputs
      `(("java-junit" ,java-junit)
        ("java-hamcrest-core" ,java-hamcrest-core)))
-- 
2.14.1