From 710682471992160ae83f79cf0b37187c28a61c65 Mon Sep 17 00:00:00 2001
From: Alfi Maulana <alfi.maulana.f@gmail.com>
Date: Sun, 7 Jul 2024 18:17:29 +0700
Subject: [PATCH] feat: add support to format path writability assertion errors
 (#181)

---
 cmake/Assertion.cmake |  6 ++++++
 test/assert.cmake     | 25 +++++++++++++++++++++++--
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/cmake/Assertion.cmake b/cmake/Assertion.cmake
index 588ae8b..1dc22e7 100644
--- a/cmake/Assertion.cmake
+++ b/cmake/Assertion.cmake
@@ -137,6 +137,9 @@ function(assert)
       elseif(ARGV0 STREQUAL "IS_READABLE")
         fail("expected path" ARGV1 "to be readable")
         return()
+      elseif(ARGV0 STREQUAL "IS_WRITABLE")
+        fail("expected path" ARGV1 "to be writable")
+        return()
       elseif(ARGV0 STREQUAL "IS_EXECUTABLE")
         fail("expected path" ARGV1 "to be an executable")
         return()
@@ -168,6 +171,9 @@ function(assert)
       elseif(ARGV1 STREQUAL "IS_READABLE")
         fail("expected path" ARGV2 "not to be readable")
         return()
+      elseif(ARGV1 STREQUAL "IS_WRITABLE")
+        fail("expected path" ARGV2 "not to be writable")
+        return()
       elseif(ARGV1 STREQUAL "IS_EXECUTABLE")
         fail("expected path" ARGV2 "not to be an executable")
         return()
diff --git a/test/assert.cmake b/test/assert.cmake
index 81ad9e8..6234fae 100644
--- a/test/assert.cmake
+++ b/test/assert.cmake
@@ -249,8 +249,7 @@ section("path readability condition assertions")
 
   file(REMOVE non_readable_file)
   file(TOUCH non_readable_file)
-  file(CHMOD non_readable_file
-    PERMISSIONS OWNER_WRITE OWNER_EXECUTE GROUP_EXECUTE WORLD_EXECUTE)
+  file(CHMOD non_readable_file PERMISSIONS OWNER_WRITE)
 
   section("it should assert path readability conditions")
     assert(IS_READABLE some_file)
@@ -268,6 +267,28 @@ section("path readability condition assertions")
   endsection()
 endsection()
 
+section("path writability condition assertions")
+  file(TOUCH some_file)
+
+  file(TOUCH non_writable_file)
+  file(CHMOD non_writable_file PERMISSIONS OWNER_READ GROUP_READ WORLD_READ)
+
+  section("it should assert path writability conditions")
+    assert(IS_WRITABLE some_file)
+    assert(NOT IS_WRITABLE non_writable_file)
+  endsection()
+
+  section("it should fail to assert path writability conditions")
+    assert_fatal_error(
+      CALL assert IS_WRITABLE non_writable_file
+      MESSAGE "expected path:\n  non_writable_file\nto be writable")
+
+    assert_fatal_error(
+      CALL assert NOT IS_WRITABLE some_file
+      MESSAGE "expected path:\n  some_file\nnot to be writable")
+  endsection()
+endsection()
+
 section("executable path condition assertions")
   file(TOUCH some_executable)
   file(