JS: create new common directory for all generated tests, migrate several tests there

js/js.translator/testData/box/closure/closureThisAndReceiver.kt

@@ -0,0 +1,35 @@
+package foo
+
+class A(val a: String) {
+    fun A.foo() = { a + this.a + this@foo.a + this@A.a }()
+    fun bar(a: A) = this.foo() + " " + a.foo()
+
+    fun A.boo() = { arrayOf(this, this@boo, this@A) }()
+    fun baz(a: A) = this.boo().stringify() + " " + a.boo().stringify()
+
+    fun Array<A>.stringify(): String {
+        var result = ""
+        for (a in this) {
+            result += a.a
+        }
+
+        return result
+    }
+}
+
+fun box(): String {
+    val a = A("a")
+    val b = A("b")
+
+    assertEquals("aaaa aaaa", a.bar(a))
+    assertEquals("aaaa bbba", a.bar(b))
+    assertEquals("bbbb aaab", b.bar(a))
+    assertEquals("bbbb bbbb", b.bar(b))
+
+    assertEquals("aaa aaa", a.baz(a))
+    assertEquals("aaa bba", a.baz(b))
+    assertEquals("bbb aab", b.baz(a))
+    assertEquals("bbb bbb", b.baz(b))
+
+    return "OK"
+}