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

compiler/testData/diagnostics/testsWithStdLib/contracts/fromStdlib/require.fir.kt

@@ -0,0 +1,27 @@
+// !LANGUAGE: +ReadDeserializedContracts +UseReturnsEffect
+// !DIAGNOSTICS: -INVISIBLE_REFERENCE -INVISIBLE_MEMBER
+
+fun testRequireSmartcast(x: Any?) {
+    require(x is String)
+    x.length
+}
+
+fun testRequireUnreachableCode() {
+    require(false)
+    println("Can't get here!")
+}
+
+fun testRequireWithMessage(x: Any?) {
+    require(x is String) { "x is not String!" }
+    x.length
+}
+
+fun testRequireWithFailingMessage(x: Any?) {
+    require(x is String) { throw kotlin.<!UNRESOLVED_REFERENCE!>IllegalStateException<!>("What a strange idea") }
+    x.length
+}
+
+fun tesRequireNotNullWithMessage(x: Int?) {
+    requireNotNull(x) { "x is null!"}
+    x.inc()
+}