Migrate boxWithJava tests to multi-file framework

compiler/testData/codegen/boxWithJava/annotatedSamFunExpression.kt

@@ -0,0 +1,45 @@
+// FILE: Test.java
+
+class Test {
+    public static Class<?> apply(Runnable x) {
+        return x.getClass();
+    }
+
+    public static interface ABC {
+        void apply(String x1, String x2);
+    }
+
+    public static Class<?> applyABC(ABC x) {
+        return x.getClass();
+    }
+}
+
+// FILE: test.kt
+
+import java.lang.reflect.Method
+import kotlin.test.assertEquals
+
+@Retention(AnnotationRetention.RUNTIME)
+annotation class Ann(val x: String)
+
+fun testMethod(method: Method, name: String) {
+    assertEquals("OK", method.getAnnotation(Ann::class.java).x, "On method of test named `$name`")
+
+    for ((index, annotations) in method.getParameterAnnotations().withIndex()) {
+        val ann = annotations.filterIsInstance<Ann>().single()
+        assertEquals("OK$index", ann.x, "On parameter $index of test named `$name`")
+    }
+}
+
+fun testClass(clazz: Class<*>, name: String) {
+    val invokes = clazz.getDeclaredMethods().single() { !it.isBridge() }
+    testMethod(invokes, name)
+}
+
+fun box(): String {
+    testClass(Test.apply(@Ann("OK") fun(){}), "1")
+
+    testClass(Test.applyABC(@Ann("OK") fun(@Ann("OK0") x: String, @Ann("OK1") y: String){}), "2")
+
+    return "OK"
+}