From fba12a24b79c833b10df56d6a481c76d6bdbfc0d Mon Sep 17 00:00:00 2001
From: Alexey Ochapov <alexez@alexez.com>
Date: Mon, 13 Dec 2021 02:44:52 +0300
Subject: [PATCH] add reverse tests to compile-error-test

to make sure that error tests do not fail because they become outdated
---
 test/compile-error-test/CMakeLists.txt | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/test/compile-error-test/CMakeLists.txt b/test/compile-error-test/CMakeLists.txt
index 724b11ed571e1..7a3c7d9704c01 100644
--- a/test/compile-error-test/CMakeLists.txt
+++ b/test/compile-error-test/CMakeLists.txt
@@ -117,19 +117,28 @@ endfunction ()
 
 # check if the source file skeleton compiles
 expect_compile(check "")
+expect_compile(check-error "compilation_error" ERROR)
 
 # Formatting a wide character with a narrow format string is forbidden.
-expect_compile(wide-character-narrow-format-string "fmt::format(\"{}\", L'a');" ERROR)
+expect_compile(wide-character-narrow-format-string "fmt::format(L\"{}\", L'a');")
+expect_compile(wide-character-narrow-format-string-error "fmt::format(\"{}\", L'a');" ERROR)
 
 # Formatting a wide string with a narrow format string is forbidden.
-expect_compile(wide-string-narrow-format-string "fmt::format(\"{}\", L\"foo\");" ERROR)
+expect_compile(wide-string-narrow-format-string "fmt::format(L\"{}\", L\"foo\");")
+expect_compile(wide-string-narrow-format-string-error "fmt::format(\"{}\", L\"foo\");" ERROR)
 
 # Formatting a narrow string with a wide format string is forbidden because
 # mixing UTF-8 with UTF-16/32 can result in an invalid output.
-expect_compile(narrow-string-wide-format-string "fmt::format(L\"{}\", \"foo\");" ERROR)
+expect_compile(narrow-string-wide-format-string "fmt::format(L\"{}\", L\"foo\");")
+expect_compile(narrow-string-wide-format-string-error "fmt::format(L\"{}\", \"foo\");" ERROR)
 
-# Formatting a wide string with a narrow format string is forbidden.
 expect_compile(cast-to-string "
+  struct S {
+    operator std::string() const { return std::string(); }
+  };
+  fmt::format(\"{}\", std::string(S()));
+")
+expect_compile(cast-to-string-error "
   struct S {
     operator std::string() const { return std::string(); }
   };
@@ -138,6 +147,10 @@ expect_compile(cast-to-string "
 
 # Formatting a function
 expect_compile(format-function "
+  void (*f)();
+  fmt::format(\"{}\", fmt::ptr(f));
+")
+expect_compile(format-function-error "
   void (*f)();
   fmt::format(\"{}\", f);
 " ERROR)