Missing tests added

compiler/testData/diagnostics/tests/tailCalls/extensionTailCall.kt

@@ -0,0 +1,4 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+tailRecursive fun Int.foo(x: Int) {
+    return 1.foo(2)
+}

compiler/testData/diagnostics/tests/tailCalls/infixRecursiveCall.kt

@@ -0,0 +1,4 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+tailRecursive fun Int.foo(x: Int) {
+    return 1 foo 2
+}

compiler/testData/diagnostics/tests/tailCalls/recursiveCallInLambda.kt

@@ -0,0 +1,8 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+<!NO_TAIL_CALLS_FOUND!>tailRecursive fun foo()<!> {
+    run {
+        <!NON_TAIL_RECURSIVE_CALL!>foo<!>()
+    }
+}
+
+fun run(a: Any) {}

compiler/testData/diagnostics/tests/tailCalls/recursiveCallInLocalFunction.kt

@@ -0,0 +1,5 @@
+<!NO_TAIL_CALLS_FOUND!>tailRecursive fun foo()<!> {
+    fun bar() {
+        <!NON_TAIL_RECURSIVE_CALL!>foo<!>()
+    }
+}

compiler/testData/diagnostics/tests/tailCalls/returnInParentheses.kt

@@ -0,0 +1,3 @@
+tailRecursive fun foo() {
+    (return foo())
+}

compiler/testData/diagnostics/tests/tailCalls/tailCallInBlockInParentheses.kt

@@ -0,0 +1,6 @@
+tailRecursive fun foo() {
+    return if (true) {
+        (foo())
+    }
+    else Unit.VALUE
+}

compiler/testData/diagnostics/tests/tailCalls/tailCallInParentheses.kt

@@ -0,0 +1,3 @@
+tailRecursive fun foo() {
+    return (foo())
+}