diff --git a/.gitignore b/.gitignore
index 3e9e4d9267..fee87f98ce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,12 +1,25 @@
-/.idea/
+## Gradle
 /.gradle/
 /buildSrc/.gradle/
 /build/
 /buildSrc/build/
+
+## IDEA
+/.idea/
 /out/
+
+## Eclipse
+.settings/
+.classpath
+.project
+bin
+
+## VSCode
+.vscode
+
+## Common
 /testData/classes/java*/
 /testData/classes/jasm/
 /testData/classes/groovy/
 /testData/classes/kt/
-/testData/classes/scala/
-bin
\ No newline at end of file
+/testData/classes/scala/
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 8c23782d1f..ef0c4b4dc5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -39,6 +39,7 @@ allprojects {
   dependencies {
     implementation 'org.jetbrains:annotations:24.0.0'
     testImplementation("org.junit.jupiter:junit-jupiter-api:${project.junit_bom}")
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:${project.junit_bom}")
   }
 
@@ -217,6 +218,12 @@ jar {
   }
 }
 
+// If testFixtures can't be inferred from the build path, it'll need to be manually specified to be able to find
+// the test fixtures class. Put it in a unique place to mark it as such.
+testFixturesJar {
+  destinationDirectory = file("$rootDir/build/extralibs")
+}
+
 task sourceJar(type:Jar) {
   archiveClassifier = "sources"
   from sourceSets.main.allSource
diff --git a/intellij.java.decompiler.engine.iml b/intellij.java.decompiler.engine.iml
deleted file mode 100644
index 8daf525178..0000000000
--- a/intellij.java.decompiler.engine.iml
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" inherit-compiler-output="true">
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" scope="TEST" name="JUnit4" level="project" />
-    <orderEntry type="library" scope="TEST" name="assertJ" level="project" />
-  </component>
-</module>
\ No newline at end of file