diff --git a/tests/crate.scm b/tests/crate.scm
index aa51faebf9634e95d04a16159e280bb710ffb101..61a04f986b24b1667dbc7626fec0ecb7cd5a0425 100644
--- a/tests/crate.scm
+++ b/tests/crate.scm
@@ -55,7 +55,7 @@ (define test-foo-dependencies
   \"dependencies\": [
      {
        \"crate_id\": \"bar\",
-       \"kind\": \"normal\",
+       \"kind\": \"normal\"
      }
   ]
 }")
@@ -87,20 +87,20 @@ (define test-root-dependencies
   \"dependencies\": [
      {
        \"crate_id\": \"intermediate-1\",
-       \"kind\": \"normal\",
+       \"kind\": \"normal\"
      },
      {
        \"crate_id\": \"intermediate-2\",
-       \"kind\": \"normal\",
+       \"kind\": \"normal\"
      }
      {
        \"crate_id\": \"leaf-alice\",
-       \"kind\": \"normal\",
+       \"kind\": \"normal\"
      },
      {
        \"crate_id\": \"leaf-bob\",
-       \"kind\": \"normal\",
-     },
+       \"kind\": \"normal\"
+     }
   ]
 }")
 
@@ -131,15 +131,15 @@ (define test-intermediate-1-dependencies
   \"dependencies\": [
      {
        \"crate_id\": \"intermediate-2\",
-       \"kind\": \"normal\",
+       \"kind\": \"normal\"
      },
      {
        \"crate_id\": \"leaf-alice\",
-       \"kind\": \"normal\",
+       \"kind\": \"normal\"
      },
      {
        \"crate_id\": \"leaf-bob\",
-       \"kind\": \"normal\",
+       \"kind\": \"normal\"
      }
   ]
 }")
@@ -171,8 +171,8 @@ (define test-intermediate-2-dependencies
   \"dependencies\": [
      {
        \"crate_id\": \"leaf-bob\",
-       \"kind\": \"normal\",
-     },
+       \"kind\": \"normal\"
+     }
   ]
 }")
 
@@ -233,6 +233,7 @@ (define test-leaf-bob-dependencies
 (define test-source-hash
   "")
 
+
 (test-begin "crate")
 
 (test-equal "guix-package->crate-name"
diff --git a/tests/gem.scm b/tests/gem.scm
index 455fc15189527d598c8f5f7cf3efa13fc8a6164f..751bba656f592a49c1757ae22b08b6dc4492b1a2 100644
--- a/tests/gem.scm
+++ b/tests/gem.scm
@@ -52,7 +52,7 @@ (define test-bar-json
   \"homepage_uri\": \"https://example.com\",
   \"dependencies\": {
     \"runtime\": [
-      { \"name\": \"bundler\" },
+      { \"name\": \"bundler\" }
     ]
   },
   \"licenses\": null
diff --git a/tests/pypi.scm b/tests/pypi.scm
index 19af6e61fb88683c7b24d30187778dce51325e23..6788c8db3e5b2191ab8926df34220d95dd11db20 100644
--- a/tests/pypi.scm
+++ b/tests/pypi.scm
@@ -46,13 +46,13 @@ (define test-json
     \"1.0.0\": [
       {
         \"url\": \"https://example.com/foo-1.0.0.egg\",
-        \"packagetype\": \"bdist_egg\",
+        \"packagetype\": \"bdist_egg\"
       }, {
         \"url\": \"https://example.com/foo-1.0.0.tar.gz\",
-        \"packagetype\": \"sdist\",
+        \"packagetype\": \"sdist\"
       }, {
         \"url\": \"https://example.com/foo-1.0.0-py2.py3-none-any.whl\",
-        \"packagetype\": \"bdist_wheel\",
+        \"packagetype\": \"bdist_wheel\"
       }
     ]
   }
@@ -120,6 +120,7 @@ (define test-metadata-with-extras-jedi "\
 Requires-Dist: pytest (>=3.1.0); extra == 'testing'
 ")
 
+
 (test-begin "pypi")
 
 (test-equal "guix-package->pypi-name, old URL style"