COMP: Re-introduce extension descriptions CMake tests

This commit partially reverts 38f5351 (BUG: Remove failing extensions
manager tests) re-introducing the following tests inadvertently removed:

* cmake_slicer_extension_description_spec_defaults_test
* cmake_slicer_extension_metadata_set_defaults_test
* cmake_slicer_extract_extension_description_test
* cmake_slicer_generate_extension_description_test

CMakeLists.txt

@@ -816,6 +816,7 @@ if(BUILD_TESTING)
     COPYONLY)
 
   add_subdirectory(CMake/Testing)
+  add_subdirectory(Extensions/CMake/Testing)
 
   if(Slicer_BUILD_CLI_SUPPORT)
     set(SEM_LAUNCH_COMMAND ${Slicer_LAUNCH_COMMAND})

Extensions/CMake/Testing/CMakeLists.txt

@@ -0,0 +1,32 @@
+
+#
+# Helper macro
+#
+macro(add_cmakescript_test testname script)
+  add_test(cmake_${testname} ${CMAKE_COMMAND}
+    -DTEST_${testname}:BOOL=ON
+    -P ${CMAKE_SOURCE_DIR}/${script})
+  set_tests_properties(cmake_${testname} PROPERTIES
+    LABELS CMake
+    PASS_REGULAR_EXPRESSION "SUCCESS")
+endmacro()
+
+#
+# Add 'CMake script' Tests
+#
+
+add_cmakescript_test(
+  slicer_extension_description_spec_defaults_test
+  Extensions/CMake/SlicerExtensionDescriptionSpec.cmake)
+
+add_cmakescript_test(
+  slicer_extension_metadata_set_defaults_test
+  Extensions/CMake/SlicerExtensionDescriptionSpec.cmake)
+
+add_cmakescript_test(
+  slicer_extract_extension_description_test
+  Extensions/CMake/SlicerFunctionExtractExtensionDescription.cmake)
+
+add_cmakescript_test(
+  slicer_generate_extension_description_test
+  Extensions/CMake/SlicerFunctionGenerateExtensionDescription.cmake)

Extensions/CMake/Testing/extension_description_with_depends.s4ext

@@ -0,0 +1,44 @@
+#
+# First token of each non-comment line is the keyword and the rest of the line
+# (including spaces) is the value.
+# - the value can be blank
+#
+
+# This is source code manager
+scm git
+scmurl https://github.com/jcfr/SlicerToKiwiExporter.git
+scmrevision 9d7341e978df954a2c875240290833d7528ef29c
+
+# list dependencies
+# - These should be names of other modules that have .s4ext files
+# - The dependencies will be built first
+depends Foo Bar
+
+# Inner build directory (default is ".")
+build_subdirectory inner/inner-inner-build
+
+# homepage
+homepage https://www.slicer.org/w/index.php/Documentation/Nightly/Extensions/SlicerToKiwiExporter
+
+# Firstname1 Lastname1 ([SubOrg1, ]Org1), Firstname2 Lastname2 ([SubOrg2, ]Org2)
+# For example: Jane Roe (Superware), John Doe (Lab1, Nowhere), Joe Bloggs (Noware)
+contributors Jean-Christophe Fillion-Robin (Kitware), Pat Marion (Kitware), Steve Pieper (Isomics), Atsushi Yamada (Shiga University of Medical Science)
+
+# Match category in the xml description of the module (where it shows up in Modules menu)
+category Exporter
+
+# url to icon (png, size 128x128 pixels)
+iconurl https://www.slicer.org/w/images/6/64/SlicerToKiwiExporterLogo.png
+
+# Give people an idea what to expect from this code
+#  - Is it just a test or something you stand behind?
+status Development
+
+# One line stating what the module does
+description The SlicerToKiwiExporter module provides Slicer user with any easy way to export models into a KiwiViewer scene file.
+
+# Space separated list of urls
+screenshoturls https://www.slicer.org/w/images/9/9e/SlicerToKiwiExporter_Kiwiviewer_8.PNG https://www.slicer.org/w/images/a/ab/SlicerToKiwiExporter_Kiwiviewer_9.PNG https://www.slicer.org/w/images/9/9a/SlicerToKiwiExporter_SaveDialog_Select-file-format_1.png
+
+# 0 or 1: Define if the extension should be enabled after its installation.
+enabled 0

Extensions/CMake/Testing/extension_description_without_depends.s4ext

@@ -0,0 +1,44 @@
+#
+# First token of each non-comment line is the keyword and the rest of the line
+# (including spaces) is the value.
+# - the value can be blank
+#
+
+# This is source code manager
+scm git
+scmurl https://github.com/jcfr/SlicerToKiwiExporter.git
+scmrevision 9d7341e978df954a2c875240290833d7528ef29c
+
+# list dependencies
+# - These should be names of other modules that have .s4ext files
+# - The dependencies will be built first
+depends NA
+
+# Inner build directory (default is ".")
+build_subdirectory .
+
+# homepage
+homepage https://www.slicer.org/w/index.php/Documentation/Nightly/Extensions/SlicerToKiwiExporter
+
+# Firstname1 Lastname1 ([SubOrg1, ]Org1), Firstname2 Lastname2 ([SubOrg2, ]Org2)
+# For example: Jane Roe (Superware), John Doe (Lab1, Nowhere), Joe Bloggs (Noware)
+contributors Jean-Christophe Fillion-Robin (Kitware), Pat Marion (Kitware), Steve Pieper (Isomics), Atsushi Yamada (Shiga University of Medical Science)
+
+# Match category in the xml description of the module (where it shows up in Modules menu)
+category Exporter
+
+# url to icon (png, size 128x128 pixels)
+iconurl https://www.slicer.org/w/images/6/64/SlicerToKiwiExporterLogo.png
+
+# Give people an idea what to expect from this code
+#  - Is it just a test or something you stand behind?
+status Development
+
+# One line stating what the module does
+description The SlicerToKiwiExporter module provides Slicer user with any easy way to export models into a KiwiViewer scene file.
+
+# Space separated list of urls
+screenshoturls https://www.slicer.org/w/images/9/9e/SlicerToKiwiExporter_Kiwiviewer_8.PNG https://www.slicer.org/w/images/a/ab/SlicerToKiwiExporter_Kiwiviewer_9.PNG https://www.slicer.org/w/images/9/9a/SlicerToKiwiExporter_SaveDialog_Select-file-format_1.png
+
+# 0 or 1: Define if the extension should be enabled after its installation.
+enabled 1