KT-2752: add checkers for inconsistent usage of JsName

js/js.translator/testData/box/nameClashes/classAndCompanionObjectMembers.kt

@@ -0,0 +1,23 @@
+package foo
+
+class A {
+    fun foo() = 23
+
+    val bar = 123
+
+    companion object {
+        fun foo() = 42
+
+        val bar = 142
+    }
+}
+
+fun box(): String {
+    assertEquals(23, A().foo())
+    assertEquals(42, A.foo())
+
+    assertEquals(123, A().bar)
+    assertEquals(142, A.bar)
+
+    return "OK"
+}

js/js.translator/testData/box/nameClashes/extensionPropertiesWithDifferentReceivers.kt

@@ -0,0 +1,18 @@
+package foo
+
+class A
+
+class B
+
+val A.foo: Int
+    get() = 32
+
+val B.foo: Int
+    get() = 42
+
+fun box(): String {
+    assertEquals(32, A().foo)
+    assertEquals(42, B().foo)
+
+    return "OK"
+}

js/js.translator/testData/box/nameClashes/extensionPropertyAndMethod.kt

@@ -0,0 +1,15 @@
+package foo
+
+class A
+
+fun A.bar() = 23
+
+val A.bar: Int
+    get() = 42
+
+fun box(): String {
+    assertEquals(23, A().bar())
+    assertEquals(42, A().bar)
+
+    return "OK"
+}

js/js.translator/testData/box/nameClashes/jsNameAndPrivate.kt

@@ -0,0 +1,12 @@
+package foo
+
+@JsName("bar") fun foo(x: Int) = x
+
+private fun bar() = 42
+
+fun box(): String {
+    assertEquals(23, foo(23))
+    assertEquals(42, bar())
+
+    return "OK"
+}

js/js.translator/testData/box/nameClashes/methodAndPrivateProperty.kt

@@ -0,0 +1,12 @@
+package foo
+
+fun bar() = 23
+
+private val bar = 32
+
+fun box(): String {
+    assertEquals(23, bar())
+    assertEquals(32, bar)
+
+    return "OK"
+}

js/js.translator/testData/box/nameClashes/propertyAndNativeMethod.kt

@@ -0,0 +1,16 @@
+package foo
+
+@native fun bar()
+
+val bar = 32
+
+fun createNativeBar() = js("bar = function() { return 23; };")
+
+fun box(): String {
+    createNativeBar()
+
+    assertEquals(23, bar())
+    assertEquals(32, bar)
+
+    return "OK"
+}