ExternalData: Allow local stores without any URL templates

Allow ExternalData_URL_TEMPLATES to be empty if a value for
ExternalData_OBJECT_STORES is provided.  Assume in this use case that
the object stores will already contain all needed objects.  Extend the
Module.ExternalData test to cover this case (all objects in stores).
Extend the RunCMake.ExternalData test to cover the non-failure message
case when stores are provided without URL templates.

5 files changed, 44 insertions, 0 deletions

diff --git a/Tests/Module/ExternalData/CMakeLists.txt b/Tests/Module/ExternalData/CMakeLists.txt
index 8312dca..5a6f3d5 100644
--- a/Tests/Module/ExternalData/CMakeLists.txt
+++ b/Tests/Module/ExternalData/CMakeLists.txt
@@ -42,3 +42,4 @@ ExternalData_Add_Target(Data1)
 
 add_subdirectory(Data2)
 add_subdirectory(Data3)
+add_subdirectory(Data4)
diff --git a/Tests/Module/ExternalData/Data4/CMakeLists.txt b/Tests/Module/ExternalData/Data4/CMakeLists.txt
new file mode 100644
index 0000000..ac977fb
--- /dev/null
+++ b/Tests/Module/ExternalData/Data4/CMakeLists.txt
@@ -0,0 +1,15 @@
+set(Store0 ${CMAKE_BINARY_DIR}/ExternalData/Other)
+set(Store1 ${CMAKE_BINARY_DIR}/ExternalData/Objects)
+set(ExternalData_OBJECT_STORES ${Store0} ${Store1})
+unset(ExternalData_URL_TEMPLATES) # All objects already in stores!
+ExternalData_Add_Test(Data4
+  NAME Data4Check
+  COMMAND ${CMAKE_COMMAND}
+    -D Data=DATA{Data.dat}
+    -D Other=DATA{Other.dat}
+    -D Store0=${Store0}
+    -D Store1=${Store1}
+    -P ${CMAKE_CURRENT_SOURCE_DIR}/Data4Check.cmake
+  )
+ExternalData_Add_Target(Data4)
+add_dependencies(Data4 Data3)
diff --git a/Tests/Module/ExternalData/Data4/Data.dat.md5 b/Tests/Module/ExternalData/Data4/Data.dat.md5
new file mode 100644
index 0000000..70e39bd
--- /dev/null
+++ b/Tests/Module/ExternalData/Data4/Data.dat.md5
@@ -0,0 +1 @@
+8c018830e3efa5caf3c7415028335a57
diff --git a/Tests/Module/ExternalData/Data4/Data4Check.cmake b/Tests/Module/ExternalData/Data4/Data4Check.cmake
new file mode 100644
index 0000000..e614cc4
--- /dev/null
+++ b/Tests/Module/ExternalData/Data4/Data4Check.cmake
@@ -0,0 +1,26 @@
+if(NOT EXISTS "${Data}")
+  message(SEND_ERROR "Input file:\n  ${Data}\ndoes not exist!")
+endif()
+if(NOT EXISTS "${Other}")
+  message(SEND_ERROR "Input file:\n  ${Other}\ndoes not exist!")
+endif()
+# Verify that the 'Data' object was found in the second store location left
+# from Data1 target downloads and that the 'Other' object was found in the
+# first store location left from Data3 target downloads.  Neither object
+# should exist in the opposite store.
+foreach(should_exist
+    "${Store0}/MD5/aaad162b85f60d1eb57ca71a23e8efd7"
+    "${Store1}/MD5/8c018830e3efa5caf3c7415028335a57"
+    )
+  if(NOT EXISTS ${should_exist})
+    message(SEND_ERROR "Store file:\n  ${should_exist}\nshould exist!")
+  endif()
+endforeach()
+foreach(should_not_exist
+    "${Store0}/MD5/8c018830e3efa5caf3c7415028335a57"
+    "${Store1}/MD5/aaad162b85f60d1eb57ca71a23e8efd7"
+    )
+  if(EXISTS ${should_not_exist})
+    message(SEND_ERROR "Store file:\n  ${should_not_exist}\nshould not exist!")
+  endif()
+endforeach()
diff --git a/Tests/Module/ExternalData/Data4/Other.dat.md5 b/Tests/Module/ExternalData/Data4/Other.dat.md5
new file mode 100644
index 0000000..5312faa
--- /dev/null
+++ b/Tests/Module/ExternalData/Data4/Other.dat.md5
@@ -0,0 +1 @@
+aaad162b85f60d1eb57ca71a23e8efd7