[LL FIR] add tests on ClassIdCalculator

analysis/low-level-api-fir/testdata/classId/classWithMembers.kt

@@ -0,0 +1,24 @@
+package one
+
+/* ClassId: one/TopLevelObject */object TopLevelObject
+
+/* ClassId: one/A */class A constructor(a: Int) {
+    /* ClassId: one/A.B */class B {
+        /* ClassId: one/A.B.C */inner class C {
+            fun foo() {
+                /* ClassId: null */typealias F = C
+
+                /* ClassId: null */class BBA
+            }
+        }
+    }
+
+    fun boo() {
+        /* ClassId: null */class A
+        /* ClassId: null */typealias B = A
+    }
+
+    /* ClassId: one/A.NestedTypeAlias */typealias NestedTypeAlias = B
+}
+
+/* ClassId: one/TopLevelAlias */typealias TopLevelAlias

analysis/low-level-api-fir/testdata/classId/localClassInsideFunctionLiteral.kt

@@ -0,0 +1,7 @@
+package one
+
+/* ClassId: one/ClassWithParameter */open class ClassWithParameter(i: () -> Unit)
+
+/* ClassId: one/TopLevelClass */class TopLevelClass : ClassWithParameter({
+    /* ClassId: null */class LocalClass
+})

analysis/low-level-api-fir/testdata/classId/localClassInsideLambdaCallInsideStringTemplate.kt

@@ -0,0 +1,10 @@
+package one
+
+/* ClassId: one/ClassWithParameter */open class ClassWithParameter(s: String)
+
+/* ClassId: one/TopLevelClass */class TopLevelClass : ClassWithParameter("${
+    {
+        /* ClassId: null */class F
+        F()
+    }()
+}")

analysis/low-level-api-fir/testdata/classId/localClassInsideSuperEntryCall.kt

@@ -0,0 +1,11 @@
+package one
+
+/* ClassId: one/Interface */interface Interface {
+    fun foo(param: String)
+}
+
+/* ClassId: one/ClassWithParameter */open class ClassWithParameter(i: Interface)
+
+/* ClassId: one/TopLevelClass */class TopLevelClass : ClassWithParameter(/* ClassId: null */object : Interface {
+    /* ClassId: null */class NestedClassFromAnonymousObject
+})