diff --git a/src/test/resources/projects/javaFirst/kobalt/src/Build.kt b/src/test/resources/projects/javaFirst/kobalt/src/Build.kt
new file mode 100644
index 00000000..3bc14f76
--- /dev/null
+++ b/src/test/resources/projects/javaFirst/kobalt/src/Build.kt
@@ -0,0 +1,27 @@
+import com.beust.kobalt.*
+import com.beust.kobalt.plugin.packaging.assemble
+import com.beust.kobalt.plugin.kotlin.*
+
+val repos = repos()
+
+
+val p = kotlinProject {
+
+    name = "mixed"
+    group = "com.example"
+    artifactId = name
+    version = "0.1"
+
+    sourceDirectories {
+        path("src/main/java", "src/main/kotlin")
+    }
+
+    assemble {
+        jar {
+            fatJar = true
+            manifest {
+                attributes("Main-Class", "example.KotlinMainKt")
+            }
+        }
+    }
+}
diff --git a/src/test/resources/projects/javaFirst/kobalt/wrapper/kobalt-wrapper.jar b/src/test/resources/projects/javaFirst/kobalt/wrapper/kobalt-wrapper.jar
new file mode 100644
index 00000000..6a522ad5
Binary files /dev/null and b/src/test/resources/projects/javaFirst/kobalt/wrapper/kobalt-wrapper.jar differ
diff --git a/src/test/resources/projects/javaFirst/kobalt/wrapper/kobalt-wrapper.properties b/src/test/resources/projects/javaFirst/kobalt/wrapper/kobalt-wrapper.properties
new file mode 100644
index 00000000..b19139e9
--- /dev/null
+++ b/src/test/resources/projects/javaFirst/kobalt/wrapper/kobalt-wrapper.properties
@@ -0,0 +1 @@
+kobalt.version=0.406
diff --git a/src/test/resources/projects/javaFirst/kobaltw b/src/test/resources/projects/javaFirst/kobaltw
new file mode 100755
index 00000000..1fd228db
--- /dev/null
+++ b/src/test/resources/projects/javaFirst/kobaltw
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+java -jar $(dirname $0)/kobalt/wrapper/kobalt-wrapper.jar $*
diff --git a/src/test/resources/projects/javaFirst/src/main/java/example/JavaClass.java b/src/test/resources/projects/javaFirst/src/main/java/example/JavaClass.java
new file mode 100644
index 00000000..12f0cfd2
--- /dev/null
+++ b/src/test/resources/projects/javaFirst/src/main/java/example/JavaClass.java
@@ -0,0 +1,8 @@
+package example;
+
+public class JavaClass {
+	public void run() {
+	    System.out.println("JavaClass run()");
+	}
+}
+
diff --git a/src/test/resources/projects/javaFirst/src/main/kotlin/example/KotlinMain.kt b/src/test/resources/projects/javaFirst/src/main/kotlin/example/KotlinMain.kt
new file mode 100644
index 00000000..297283ea
--- /dev/null
+++ b/src/test/resources/projects/javaFirst/src/main/kotlin/example/KotlinMain.kt
@@ -0,0 +1,6 @@
+package example
+
+fun main(argv: Array<String>) {
+	println("KotlinMain calling JavaClass().run()")
+	JavaClass().run()
+}
diff --git a/src/test/resources/projects/kotlinFirst/kobalt/src/Build.kt b/src/test/resources/projects/kotlinFirst/kobalt/src/Build.kt
new file mode 100644
index 00000000..3bc14f76
--- /dev/null
+++ b/src/test/resources/projects/kotlinFirst/kobalt/src/Build.kt
@@ -0,0 +1,27 @@
+import com.beust.kobalt.*
+import com.beust.kobalt.plugin.packaging.assemble
+import com.beust.kobalt.plugin.kotlin.*
+
+val repos = repos()
+
+
+val p = kotlinProject {
+
+    name = "mixed"
+    group = "com.example"
+    artifactId = name
+    version = "0.1"
+
+    sourceDirectories {
+        path("src/main/java", "src/main/kotlin")
+    }
+
+    assemble {
+        jar {
+            fatJar = true
+            manifest {
+                attributes("Main-Class", "example.KotlinMainKt")
+            }
+        }
+    }
+}
diff --git a/src/test/resources/projects/kotlinFirst/kobalt/wrapper/kobalt-wrapper.jar b/src/test/resources/projects/kotlinFirst/kobalt/wrapper/kobalt-wrapper.jar
new file mode 100644
index 00000000..6a522ad5
Binary files /dev/null and b/src/test/resources/projects/kotlinFirst/kobalt/wrapper/kobalt-wrapper.jar differ
diff --git a/src/test/resources/projects/kotlinFirst/kobalt/wrapper/kobalt-wrapper.properties b/src/test/resources/projects/kotlinFirst/kobalt/wrapper/kobalt-wrapper.properties
new file mode 100644
index 00000000..b19139e9
--- /dev/null
+++ b/src/test/resources/projects/kotlinFirst/kobalt/wrapper/kobalt-wrapper.properties
@@ -0,0 +1 @@
+kobalt.version=0.406
diff --git a/src/test/resources/projects/kotlinFirst/kobaltw b/src/test/resources/projects/kotlinFirst/kobaltw
new file mode 100755
index 00000000..1fd228db
--- /dev/null
+++ b/src/test/resources/projects/kotlinFirst/kobaltw
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+java -jar $(dirname $0)/kobalt/wrapper/kobalt-wrapper.jar $*
diff --git a/src/test/resources/projects/kotlinFirst/src/main/java/example/JavaMain.java b/src/test/resources/projects/kotlinFirst/src/main/java/example/JavaMain.java
new file mode 100644
index 00000000..e569b824
--- /dev/null
+++ b/src/test/resources/projects/kotlinFirst/src/main/java/example/JavaMain.java
@@ -0,0 +1,8 @@
+package example;
+
+public class JavaMain {
+	public static void main(String[] argv) {
+		System.out.println("JavaMain calling into Kotlin");
+		new KotlinClass().run();
+	}
+}
\ No newline at end of file
diff --git a/src/test/resources/projects/kotlinFirst/src/main/kotlin/example/KotlinClass.kt b/src/test/resources/projects/kotlinFirst/src/main/kotlin/example/KotlinClass.kt
new file mode 100644
index 00000000..611d2c87
--- /dev/null
+++ b/src/test/resources/projects/kotlinFirst/src/main/kotlin/example/KotlinClass.kt
@@ -0,0 +1,11 @@
+package example
+
+import kotlin.io.*
+
+class KotlinClass {
+	fun run() {
+	    println("KotlinClass run()")
+	}
+}
+
+