diff --git a/codeOptimizers/build.gradle b/codeOptimizers/build.gradle
index 52e4faeae..2786568b4 100644
--- a/codeOptimizers/build.gradle
+++ b/codeOptimizers/build.gradle
@@ -16,12 +16,6 @@ dependencies {
     implementation project(':compilerAst')
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     // implementation "org.jetbrains.kotlin:kotlin-reflect"
-
-    testImplementation "org.jetbrains.kotlin:kotlin-test-junit5"
-    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.2'
-    testImplementation 'org.hamcrest:hamcrest:2.2'
-    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.2'
-
 }
 
 sourceSets {
@@ -33,22 +27,6 @@ sourceSets {
             srcDirs = ["${project.projectDir}/res"]
         }
     }
-    test {
-        java {
-            srcDirs = ["${project.projectDir}/test"]
-        }
-    }
 }
 
-test {
-    // Enable JUnit 5 (Gradle 4.6+).
-    useJUnitPlatform()
-
-    // Always run tests, even when nothing changed.
-    dependsOn 'cleanTest'
-
-    // Show test results.
-    testLogging {
-        events "skipped", "failed"
-    }
-}
+// note: there are no unit tests in this module!
diff --git a/codeOptimizers/codeOptimizers.iml b/codeOptimizers/codeOptimizers.iml
index 589fe3d9b..a6dcf5f56 100644
--- a/codeOptimizers/codeOptimizers.iml
+++ b/codeOptimizers/codeOptimizers.iml
@@ -12,7 +12,5 @@
     <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
     <orderEntry type="module" module-name="compilerInterfaces" />
     <orderEntry type="module" module-name="compilerAst" />
-    <orderEntry type="library" scope="TEST" name="hamcrest" level="project" />
-    <orderEntry type="library" name="junit.jupiter" level="project" />
   </component>
 </module>
\ No newline at end of file
diff --git a/codeOptimizers/test/readme.txt b/codeOptimizers/readme-tests.txt
similarity index 52%
rename from codeOptimizers/test/readme.txt
rename to codeOptimizers/readme-tests.txt
index c697d3e9d..b97671511 100644
--- a/codeOptimizers/test/readme.txt
+++ b/codeOptimizers/readme-tests.txt
@@ -1,2 +1,2 @@
 Unittests for things in this module are located in the Compiler module instead,
-for convenience sake - and to not spread the test cases around too much.
+for convenience sake, and to not spread the test cases around too much.
diff --git a/compilerInterfaces/build.gradle b/compilerInterfaces/build.gradle
index dc55d631d..410bf26ae 100644
--- a/compilerInterfaces/build.gradle
+++ b/compilerInterfaces/build.gradle
@@ -15,12 +15,6 @@ dependencies {
     implementation project(':compilerAst')
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     // implementation "org.jetbrains.kotlin:kotlin-reflect"
-
-    testImplementation "org.jetbrains.kotlin:kotlin-test-junit5"
-    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.2'
-    testImplementation 'org.hamcrest:hamcrest:2.2'
-    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.2'
-
 }
 
 sourceSets {
@@ -32,23 +26,6 @@ sourceSets {
             srcDirs = ["${project.projectDir}/res"]
         }
     }
-    test {
-        java {
-            srcDirs = ["${project.projectDir}/test"]
-        }
-    }
 }
 
-
-test {
-    // Enable JUnit 5 (Gradle 4.6+).
-    useJUnitPlatform()
-
-    // Always run tests, even when nothing changed.
-    dependsOn 'cleanTest'
-
-    // Show test results.
-    testLogging {
-        events "skipped", "failed"
-    }
-}
+// note: there are no unit tests in this module!
diff --git a/compilerInterfaces/compilerInterfaces.iml b/compilerInterfaces/compilerInterfaces.iml
index dd702955a..949d98b7a 100644
--- a/compilerInterfaces/compilerInterfaces.iml
+++ b/compilerInterfaces/compilerInterfaces.iml
@@ -11,7 +11,5 @@
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
     <orderEntry type="module" module-name="compilerAst" />
-    <orderEntry type="library" scope="TEST" name="hamcrest" level="project" />
-    <orderEntry type="library" name="junit.jupiter" level="project" />
   </component>
 </module>
\ No newline at end of file
diff --git a/compilerInterfaces/test/readme.txt b/compilerInterfaces/readme-tests.txt
similarity index 52%
rename from compilerInterfaces/test/readme.txt
rename to compilerInterfaces/readme-tests.txt
index c697d3e9d..b97671511 100644
--- a/compilerInterfaces/test/readme.txt
+++ b/compilerInterfaces/readme-tests.txt
@@ -1,2 +1,2 @@
 Unittests for things in this module are located in the Compiler module instead,
-for convenience sake - and to not spread the test cases around too much.
+for convenience sake, and to not spread the test cases around too much.
diff --git a/docs/source/todo.rst b/docs/source/todo.rst
index 2383a1f05..862d7a33a 100644
--- a/docs/source/todo.rst
+++ b/docs/source/todo.rst
@@ -5,6 +5,7 @@ For next compiler release (7.3)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 - replace all old asserts in compilerAst tests by kotest equivalents
 - remove kotlin.test and junit dependencies in compilerAst module
+- migrate Compiler tests to KoTest library (this will close github issue #70)
 ...
 
 
@@ -17,7 +18,6 @@ Blocked by Commander-x16 v39 release
 Future
 ^^^^^^
 - fix the asm-labels problem (github issue #62)
-- start migrating to KoTest library (github issue #70)
 - find a way to optimize asm-subroutine param passing where it now sometimes uses the evalstack?
 - [complicated?] find a way to optimize if-statement codegen so that "if var & %10000" doesn't use evalstack & subroutine call, but also that the simple case "if X {...}" remains fast
 - document the various compiler command line options in more detail. See "Compiling program code" in the docs