[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/testsWithStdLib/purelyImplementedCollection/maps.fir.kt

@@ -0,0 +1,81 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+// !WITH_NEW_INFERENCE
+// FULL_JDK
+
+import java.util.*
+import java.util.concurrent.*
+
+fun bar(): String? = null
+val nullableInt: Int? = null
+
+fun hashMapTest() {
+    var x: HashMap<String, Int> = HashMap<String, Int>()
+    x.put(null, null)
+    x.put("", null)
+    x.put(bar(), 1)
+    x.put("", 1)
+
+    x[null] = 1
+    x[bar()] = 1
+    x[""] = nullableInt
+    x[""] = 1
+
+    val b1: MutableMap<String, Int?> = x
+    val b2: MutableMap<String, Int> = x
+    val b3: Map<String?, Int> = x
+    val b4: Map<String?, Int?> = x
+    val b5: Map<String, Int?> = x
+
+    val b6: Int = x[""]
+    val b7: Int = x.get("")
+
+    val b8: Int? = x.get("")
+}
+
+fun treeMapTest() {
+    var x: TreeMap<String, Int> = TreeMap<String, Int>()
+    x.put(null, null)
+    x.put("", null)
+    x.put(bar(), 1)
+    x.put("", 1)
+
+    x[null] = 1
+    x[bar()] = 1
+    x[""] = nullableInt
+    x[""] = 1
+
+    val b1: MutableMap<String, Int?> = x
+    val b2: MutableMap<String, Int> = x
+    val b3: Map<String?, Int> = x
+    val b4: Map<String?, Int?> = x
+    val b5: Map<String, Int?> = x
+
+    val b6: Int = x[""]
+    val b7: Int = x.get("")
+
+    val b8: Int? = x.get("")
+}
+
+fun concurrentHashMapTest() {
+    var x: ConcurrentHashMap<String, Int> = ConcurrentHashMap<String, Int>()
+    x.put(null, null)
+    x.put("", null)
+    x.put(bar(), 1)
+    x.put("", 1)
+
+    x[null] = 1
+    x[bar()] = 1
+    x[""] = nullableInt
+    x[""] = 1
+
+    val b1: MutableMap<String, Int?> = x
+    val b2: MutableMap<String, Int> = x
+    val b3: Map<String?, Int> = x
+    val b4: Map<String?, Int?> = x
+    val b5: Map<String, Int?> = x
+
+    val b6: Int = x[""]
+    val b7: Int = x.get("")
+
+    val b8: Int? = x.get("")
+}