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

compiler/testData/diagnostics/tests/operatorRem/DeprecatedModAssignOperatorConventions.fir.kt

@@ -0,0 +1,43 @@
+// !LANGUAGE: -ProhibitOperatorMod
+// !WITH_NEW_INFERENCE
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+class OldAndNew {
+    operator fun modAssign(x: Int) {}
+    operator fun remAssign(x: Int) {}
+}
+
+class OnlyOld {
+    operator fun modAssign(x: Int) {}
+}
+
+class OnlyNew {
+    operator fun remAssign(x: Int) {}
+}
+
+class Sample
+
+operator fun Sample.modAssign(x: Int) {}
+operator fun Sample.remAssign(x: Int) {}
+
+class ModAndRemAssign {
+    operator fun mod(x: Int): ModAndRemAssign = ModAndRemAssign()
+    operator fun remAssign(x: Int) {}
+}
+
+fun test() {
+    val oldAndNew = OldAndNew()
+    oldAndNew %= 1
+
+    val onlyOld = OnlyOld()
+    <!INAPPLICABLE_CANDIDATE!>onlyOld %= 1<!>
+
+    val onlyNew = OnlyNew()
+    onlyNew %= 1
+
+    val sample = Sample()
+    sample %= 1
+
+    var modAndRemAssign = ModAndRemAssign()
+    modAndRemAssign %= 1
+}