From 9e7ed6fde49438722234094ae35284cc13094193 Mon Sep 17 00:00:00 2001
From: James <james@jameskress.com>
Date: Fri, 13 Mar 2020 15:09:24 -0400
Subject: [PATCH] Checking for lfs in testing.

---
 CMakeLists.txt     | 10 ++++++++++
 data/data.readme   |  4 ++--
 data/sentinel-data |  3 +++
 3 files changed, 15 insertions(+), 2 deletions(-)
 create mode 100644 data/sentinel-data

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3e24fd2a5..a249469b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -159,6 +159,16 @@ include(VTKmCompilerFlags)
 
 
 #-----------------------------------------------------------------------------
+# We need to check and see if git lfs is installed so that test data will
+# be available for use
+file(READ "${VTKm_SOURCE_DIR}/data/sentinel-data" data)
+if (NOT data STREQUAL "\n")
+  message(WARNING
+    "Testing is enabled, but the data is not available. Use git lfs in order "
+    " to obtain the testing data.")
+  set(VTKm_ENABLE_TESTING off)
+endif()
+
 # We include the wrappers unconditionally as VTK-m expects the function to
 # always exist (and early terminate when testing is disabled).
 include(testing/VTKmTestWrappers)
diff --git a/data/data.readme b/data/data.readme
index 625be3a9b..91daec721 100644
--- a/data/data.readme
+++ b/data/data.readme
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:9fa8928893e3a34e24a6d675f66001df373c51657f9c5acb9606950e6e7f0b65
-size 456
+oid sha256:f4c2b15c789037bb7721de8b40575c90dddb4a76920dba8b9488f9d3bac2b06f
+size 624
diff --git a/data/sentinel-data b/data/sentinel-data
new file mode 100644
index 000000000..fd481aab7
--- /dev/null
+++ b/data/sentinel-data
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
+size 1