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

compiler/testData/diagnostics/tests/Infix.fir.kt

@@ -0,0 +1,38 @@
+class Pair<out A, out B>(val first: A, val second: B)
+
+class Example {
+    <!INAPPLICABLE_INFIX_MODIFIER!>infix fun to(other: Example) = Pair(this, other)<!>
+    fun toNonInfix(other: Example) = Pair(this, other)
+}
+
+infix fun Example.toExt(other: Example) = Pair(this, other)
+fun Example.toExtNonInfix(other: Example) = Pair(this, other)
+
+<!INAPPLICABLE_INFIX_MODIFIER!>infix fun Example.toExtWithExtraParams(other: Example, blah: Int = 0) = Pair(this, other)<!>
+fun Example.toExtNonInfixWithExtraParams(other: Example, blah: Int = 0) = Pair(this, other)
+
+<!INAPPLICABLE_INFIX_MODIFIER!>infix fun Example.toExtDefaultValues(other: Example? = null, blah: Int = 0) = Pair(this, other)<!>
+fun Example.toExtNonInfixDefaultValues(other: Example? = null, blah: Int = 0) = Pair(this, other)
+
+fun Example.withLambda(f: () -> Unit) = Pair(this, f)
+
+fun test() {
+    Example() to Example()
+    Example() toNonInfix Example()
+    Example().toNonInfix(Example())
+
+    val a = Example()
+    val b = Example()
+
+    a toExt b
+    a toExtNonInfix b
+    a.toExtNonInfix(b)
+
+    a toExtWithExtraParams b
+    a toExtNonInfixWithExtraParams b
+
+    a toExtDefaultValues b
+    a toExtNonInfixDefaultValues b
+
+    a withLambda { }
+}