fix issues with build dependencies and test execution

archunit-junit/junit4/build.gradle

@@ -40,10 +40,6 @@ sourcesJar {
     }
 }
 
-archUnitTest {
-    hasSlowTests = true
-}
-
 shadowJar {
     exclude 'META-INF/**'
 

archunit-junit/junit5/engine-api/build.gradle

@@ -23,10 +23,6 @@ dependencies {
 
 compileJava.dependsOn project(':archunit-junit5-api').finishArchive
 
-archUnitTest {
-    hasSlowTests = true
-}
-
 test {
     useJUnitPlatform() {
         excludeEngines 'archunit'

archunit-junit/junit5/engine/build.gradle

@@ -37,10 +37,6 @@ sourcesJar {
     from project(':archunit-junit').sourceSets.main.allSource
 }
 
-archUnitTest {
-    hasSlowTests = true
-}
-
 test {
     useJUnitPlatform() {
         excludeEngines 'archunit'

archunit/build.gradle

@@ -61,7 +61,7 @@ sourceSets {
         java {
             srcDirs = jdk9MainDirs
         }
-        compileClasspath += sourceSets.main.compileClasspath
+        compileClasspath += sourceSets.main.compileClasspath + sourceSets.main.output.classesDirs
     }
     jdk9test {
         java {

buildSrc/src/main/groovy/archunit.java-testing-conventions.gradle

@@ -23,6 +23,7 @@ afterEvaluate {
 
     if (archUnitTest.hasSlowTests) {
         tasks.withType(Test) {
+            assert !it.testFramework.class.name.contains('JUnitPlatform'): "Slow tests are not yet supported for JUnit 5 tests"
             if (!project.hasProperty('allTests')) {
                 useJUnit {
                     excludeCategories 'com.tngtech.archunit.Slow'
@@ -39,8 +40,6 @@ tasks.withType(Test) {
         events "failed"
         exceptionFormat "full"
     }
-
-    ignoreFailures = project.hasProperty('ignoreTestFailures')
 }
 
 // Add some better test failure reporting on the console