Introduce MultiModuleHighlightingTest

Checks that analysis produces expected diagnostics when configured by real IDEA module

idea/testData/multiModuleHighlighting/dependency/m1/m1.kt

@@ -0,0 +1,8 @@
+package foo
+
+public fun accessM1() {
+    accessM1()
+    accessM2()
+    <error>accessM3</error>()
+    <error>accessM4</error>()
+}

idea/testData/multiModuleHighlighting/dependency/m2/m2.kt

@@ -0,0 +1,8 @@
+package foo
+
+public fun accessM2() {
+    accessM1()
+    accessM2()
+    <error>accessM3</error>()
+    <error>accessM4</error>()
+}

idea/testData/multiModuleHighlighting/dependency/m3/m3.kt

@@ -0,0 +1,8 @@
+package foo
+
+public fun accessM3() {
+    <error>accessM1</error>()
+    accessM2()
+    accessM3()
+    <error>accessM4</error>()
+}

idea/testData/multiModuleHighlighting/dependency/m4/m4.kt

@@ -0,0 +1,8 @@
+package foo
+
+public fun accessM4() {
+    accessM1()
+    accessM2()
+    accessM3()
+    accessM4()
+}

idea/testData/multiModuleHighlighting/visibility/m1/m1.kt

@@ -0,0 +1,27 @@
+package m1
+
+public class PublicClassInM1
+class InternalClassInM1
+private class PrivateClassInM1
+
+public fun publicFunInM1() {
+}
+fun internalFunInM1() {
+}
+private fun privateFunInM1() {
+}
+
+fun testVisibility() {
+    <error descr="[UNRESOLVED_REFERENCE] Unresolved reference: ClassInM2">ClassInM2</error>()
+}
+
+public open class A internal () {
+    private fun pri() {
+    }
+    fun int() {
+    }
+    protected fun pro() {
+    }
+    public fun pub() {
+    }
+}

idea/testData/multiModuleHighlighting/visibility/m2/m2.kt

@@ -0,0 +1,34 @@
+package m2
+
+import m1.*
+
+fun testVisibility() {
+    PublicClassInM1()
+
+    <error descr="[INVISIBLE_MEMBER] Cannot access 'InternalClassInM1': it is 'internal' in 'm1'">InternalClassInM1</error>()
+
+    <error descr="[INVISIBLE_MEMBER] Cannot access 'PrivateClassInM1': it is 'private' in 'm1'">PrivateClassInM1</error>()
+
+    publicFunInM1()
+
+    <error descr="[INVISIBLE_MEMBER] Cannot access 'internalFunInM1': it is 'internal' in 'm1'">internalFunInM1</error>()
+
+    <error descr="[INVISIBLE_MEMBER] Cannot access 'privateFunInM1': it is 'private' in 'm1'">privateFunInM1</error>()
+}
+
+public class ClassInM2
+
+public class B: <error descr="[INVISIBLE_MEMBER] Cannot access '<init>': it is 'internal' in 'A'">A</error>() {
+
+    fun accessA(<warning>a</warning>: A) {}
+
+    fun f() {
+        <error descr="[INVISIBLE_MEMBER] Cannot access 'pri': it is 'invisible_fake' in 'B'">pri</error>()
+
+        pro()
+
+        pub()
+
+        <error descr="[INVISIBLE_MEMBER] Cannot access 'int': it is 'invisible_fake' in 'B'">int</error>()
+    }
+}