[Tests] Test samples from KEEP

compiler/testData/codegen/box/extensionFunctions/contextReceivers/fromKEEP/compareTo.kt

@@ -0,0 +1,19 @@
+// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_FIR: JVM_IR
+
+data class Pair<A, B>(val first: A, val second: B)
+
+context(Comparator<T>)
+infix operator fun <T> T.compareTo(other: T) = compare(this, other)
+
+context(Comparator<T>)
+val <T> Pair<T, T>.min get() = if (first < second) first else second
+
+fun box(): String {
+    val comparator = Comparator<String> { a, b ->
+        if (a == null || b == null) 0 else a.length.compareTo(b.length)
+    }
+    return with(comparator) {
+        Pair("OK", "fail").min
+    }
+}