From 0fd64345fe445797f5b2d89c1371e421d915dc9b Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Thu, 30 Nov 2023 14:20:32 -0500
Subject: Tests: Add case covering non-writable CMAKE_BINARY_DIR

Issue: #24407
---
 Tests/RunCMake/Configure/ReadOnly-result.txt |  1 +
 Tests/RunCMake/Configure/ReadOnly-stderr.txt |  8 ++++++++
 Tests/RunCMake/Configure/ReadOnly.cmake      |  1 +
 Tests/RunCMake/Configure/RunCMakeTest.cmake  | 16 ++++++++++++++++
 4 files changed, 26 insertions(+)
 create mode 100644 Tests/RunCMake/Configure/ReadOnly-result.txt
 create mode 100644 Tests/RunCMake/Configure/ReadOnly-stderr.txt
 create mode 100644 Tests/RunCMake/Configure/ReadOnly.cmake

diff --git a/Tests/RunCMake/Configure/ReadOnly-result.txt b/Tests/RunCMake/Configure/ReadOnly-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Configure/ReadOnly-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Configure/ReadOnly-stderr.txt b/Tests/RunCMake/Configure/ReadOnly-stderr.txt
new file mode 100644
index 0000000..fb00ae9
--- /dev/null
+++ b/Tests/RunCMake/Configure/ReadOnly-stderr.txt
@@ -0,0 +1,8 @@
+CMake Error: Unable to \(re\)create the private pkgRedirects directory:
+  [^
+]*/Tests/RunCMake/Configure/ReadOnly-build/CMakeFiles/pkgRedirects
+This may be caused by not having read/write access to the build directory.
+Try specifying a location with read/write access like:
+  cmake -B build
+If using a CMake presets file, ensure that preset parameter
+'binaryDir' expands to a writable directory.
diff --git a/Tests/RunCMake/Configure/ReadOnly.cmake b/Tests/RunCMake/Configure/ReadOnly.cmake
new file mode 100644
index 0000000..2fc38e5
--- /dev/null
+++ b/Tests/RunCMake/Configure/ReadOnly.cmake
@@ -0,0 +1 @@
+message(FATAL_ERROR "This should not be reached!")
diff --git a/Tests/RunCMake/Configure/RunCMakeTest.cmake b/Tests/RunCMake/Configure/RunCMakeTest.cmake
index df6849e..842a005 100644
--- a/Tests/RunCMake/Configure/RunCMakeTest.cmake
+++ b/Tests/RunCMake/Configure/RunCMakeTest.cmake
@@ -55,3 +55,19 @@ if(NOT RunCMake_GENERATOR MATCHES "^Ninja Multi-Config$")
   run_cmake(NoCMAKE_DEFAULT_BUILD_TYPE)
   run_cmake(NoCMAKE_DEFAULT_CONFIGS)
 endif()
+
+if(NOT CMAKE_HOST_WIN32)
+  block()
+    # Test a non-writable build directory.
+    # Exclude when running as root because directories are always writable.
+    get_unix_uid(uid)
+    if(NOT uid STREQUAL "0")
+      set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/ReadOnly-build)
+      file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+      file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+      file(CHMOD "${RunCMake_TEST_BINARY_DIR}" PERMISSIONS OWNER_READ OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
+      set(RunCMake_TEST_NO_CLEAN 1)
+      run_cmake(ReadOnly)
+    endif()
+  endblock()
+endif()
-- 
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