[Test] Merge box against java testdata into codegen black box testsdata

compiler/testData/codegen/sam/adapters/operators/multiGetSet.kt

@@ -0,0 +1,34 @@
+// DONT_TARGET_EXACT_BACKEND: JS JS_IR JS_IR_ES6 WASM NATIVE
+// MODULE: lib
+// FILE: JavaClass.java
+
+class JavaClass {
+    int get(Runnable i1, Runnable i2) {
+        i1.run();
+        i2.run();
+        return 239;
+    }
+
+    void set(Runnable i1, Runnable i2, Runnable value) {
+        i1.run();
+        i2.run();
+        value.run();
+    }
+}
+
+// MODULE: main(lib)
+// FILE: 1.kt
+
+fun box(): String {
+    val obj = JavaClass()
+
+    var v1 = "FAIL"
+    obj[{ v1 = "O" }, { v1 += "K" }]
+    if (v1 != "OK") return "get: $v1"
+
+    var v2 = "FAIL"
+    obj[{ v2 = "" }, { v2 += "O" }] = { v2 += "K" }
+    if (v2 != "OK") return "set: $v2"
+
+    return "OK"
+}