ExternalData: Add tests covering interfaces and errors

Add a Module.ExternalData test to verify data retrieval and test
argument DATA{} references.

Add a RunCMake.ExternalData test to verify error handling and automatic
transformation of a raw data to a content link and staged object.

61 files changed, 357 insertions, 0 deletions

diff --git a/Tests/RunCMake/ExternalData/BadHashAlgo1-result.txt b/Tests/RunCMake/ExternalData/BadHashAlgo1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadHashAlgo1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/BadHashAlgo1-stderr.txt b/Tests/RunCMake/ExternalData/BadHashAlgo1-stderr.txt
new file mode 100644
index 0000000..f68f0be
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadHashAlgo1-stderr.txt
@@ -0,0 +1,8 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Unknown hash algorithm specified by ExternalData_LINK_CONTENT:
+
+    BAD
+Call Stack \(most recent call first\):
+  .*
+  BadHashAlgo1.cmake:3 \(ExternalData_Expand_Arguments\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/BadHashAlgo1.cmake b/Tests/RunCMake/ExternalData/BadHashAlgo1.cmake
new file mode 100644
index 0000000..19e2e41
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadHashAlgo1.cmake
@@ -0,0 +1,3 @@
+include(ExternalData)
+set(ExternalData_LINK_CONTENT BAD)
+ExternalData_Expand_Arguments(Data args DATA{BadHashAlgo1.txt})
diff --git a/Tests/RunCMake/ExternalData/BadHashAlgo1.txt b/Tests/RunCMake/ExternalData/BadHashAlgo1.txt
new file mode 100644
index 0000000..bfa2818
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadHashAlgo1.txt
@@ -0,0 +1 @@
+Sample input file that should not be transformed.
diff --git a/Tests/RunCMake/ExternalData/BadOption1-result.txt b/Tests/RunCMake/ExternalData/BadOption1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadOption1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/BadOption1-stderr.txt b/Tests/RunCMake/ExternalData/BadOption1-stderr.txt
new file mode 100644
index 0000000..b63d098
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadOption1-stderr.txt
@@ -0,0 +1,9 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Unknown option "Bad/Option" in argument
+
+    DATA{Data.txt,Bad/Option}
+
+Call Stack \(most recent call first\):
+  .*
+  BadOption1.cmake:2 \(ExternalData_Add_Test\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/BadOption1.cmake b/Tests/RunCMake/ExternalData/BadOption1.cmake
new file mode 100644
index 0000000..1303d7f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadOption1.cmake
@@ -0,0 +1,5 @@
+include(ExternalData)
+ExternalData_Add_Test(Data
+  NAME Test
+  COMMAND ${CMAKE_COMMAND} -E echo DATA{Data.txt,Bad/Option}
+  )
diff --git a/Tests/RunCMake/ExternalData/BadOption2-result.txt b/Tests/RunCMake/ExternalData/BadOption2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadOption2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/BadOption2-stderr.txt b/Tests/RunCMake/ExternalData/BadOption2-stderr.txt
new file mode 100644
index 0000000..d114c8a
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadOption2-stderr.txt
@@ -0,0 +1,9 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Unknown option "Bad:Option" in argument
+
+    DATA{Data.txt,Bad:Option}
+
+Call Stack \(most recent call first\):
+  .*
+  BadOption2.cmake:2 \(ExternalData_Add_Test\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/BadOption2.cmake b/Tests/RunCMake/ExternalData/BadOption2.cmake
new file mode 100644
index 0000000..6269b06
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadOption2.cmake
@@ -0,0 +1,5 @@
+include(ExternalData)
+ExternalData_Add_Test(Data
+  NAME Test
+  COMMAND ${CMAKE_COMMAND} -E echo DATA{Data.txt,Bad:Option}
+  )
diff --git a/Tests/RunCMake/ExternalData/BadSeries1-result.txt b/Tests/RunCMake/ExternalData/BadSeries1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/BadSeries1-stderr.txt b/Tests/RunCMake/ExternalData/BadSeries1-stderr.txt
new file mode 100644
index 0000000..3099be5
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries1-stderr.txt
@@ -0,0 +1,19 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  ExternalData_SERIES_PARSE is set to
+
+    NotASeriesRegex
+
+  which is not of the form
+
+    \(<number>\)\(<suffix>\)\$
+
+  Fix the regular expression or set variables
+
+    ExternalData_SERIES_PARSE_PREFIX = <prefix> regex group number, if any
+    ExternalData_SERIES_PARSE_NUMBER = <number> regex group number
+    ExternalData_SERIES_PARSE_SUFFIX = <suffix> regex group number
+
+Call Stack \(most recent call first\):
+  .*
+  BadSeries1.cmake:3 \(ExternalData_Expand_Arguments\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/BadSeries1.cmake b/Tests/RunCMake/ExternalData/BadSeries1.cmake
new file mode 100644
index 0000000..7d71210
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries1.cmake
@@ -0,0 +1,3 @@
+include(ExternalData)
+set(ExternalData_SERIES_PARSE NotASeriesRegex)
+ExternalData_Expand_Arguments(Data args DATA{Data.txt,:})
diff --git a/Tests/RunCMake/ExternalData/BadSeries2-result.txt b/Tests/RunCMake/ExternalData/BadSeries2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/BadSeries2-stderr.txt b/Tests/RunCMake/ExternalData/BadSeries2-stderr.txt
new file mode 100644
index 0000000..3a02c25
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries2-stderr.txt
@@ -0,0 +1,16 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Data file referenced by argument
+
+    DATA{Data.txt,:}
+
+  corresponds to path
+
+    Data.txt
+
+  that does not match regular expression
+
+    \(x\)\(y\)\$
+Call Stack \(most recent call first\):
+  .*
+  BadSeries2.cmake:3 \(ExternalData_Expand_Arguments\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/BadSeries2.cmake b/Tests/RunCMake/ExternalData/BadSeries2.cmake
new file mode 100644
index 0000000..e81993b
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries2.cmake
@@ -0,0 +1,3 @@
+include(ExternalData)
+set(ExternalData_SERIES_PARSE "(x)(y)$")
+ExternalData_Expand_Arguments(Data args DATA{Data.txt,:})
diff --git a/Tests/RunCMake/ExternalData/BadSeries3-result.txt b/Tests/RunCMake/ExternalData/BadSeries3-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries3-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/BadSeries3-stderr.txt b/Tests/RunCMake/ExternalData/BadSeries3-stderr.txt
new file mode 100644
index 0000000..594cb6f6
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries3-stderr.txt
@@ -0,0 +1,6 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Series option ":" not allowed with associated files.
+Call Stack \(most recent call first\):
+  .*
+  BadSeries3.cmake:2 \(ExternalData_Expand_Arguments\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/BadSeries3.cmake b/Tests/RunCMake/ExternalData/BadSeries3.cmake
new file mode 100644
index 0000000..b640df8
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/BadSeries3.cmake
@@ -0,0 +1,2 @@
+include(ExternalData)
+ExternalData_Expand_Arguments(Data args DATA{PairA.txt,PairB.txt,:})
diff --git a/Tests/RunCMake/ExternalData/CMakeLists.txt b/Tests/RunCMake/ExternalData/CMakeLists.txt
new file mode 100644
index 0000000..e8db6b0
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 2.8)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/ExternalData/Data.txt.md5 b/Tests/RunCMake/ExternalData/Data.txt.md5
new file mode 100644
index 0000000..93b3485
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Data.txt.md5
@@ -0,0 +1 @@
+e8bb14af900b998b5a3df7e21dd07d58
diff --git a/Tests/RunCMake/ExternalData/Directory1-result.txt b/Tests/RunCMake/ExternalData/Directory1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/Directory1-stderr.txt b/Tests/RunCMake/ExternalData/Directory1-stderr.txt
new file mode 100644
index 0000000..85c250f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory1-stderr.txt
@@ -0,0 +1,14 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Data file referenced by argument
+
+    DATA{Directory1}
+
+  corresponds to source tree path
+
+    Directory1
+
+  that does not exist as a file \(with or without an extension\)!
+Call Stack \(most recent call first\):
+  .*
+  Directory1.cmake:3 \(ExternalData_Add_Test\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/Directory1.cmake b/Tests/RunCMake/ExternalData/Directory1.cmake
new file mode 100644
index 0000000..68f1b54
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory1.cmake
@@ -0,0 +1,6 @@
+include(CTest)
+include(ExternalData)
+ExternalData_Add_Test(Data
+  NAME Test
+  COMMAND ${CMAKE_COMMAND} -E echo DATA{Directory1}
+  )
diff --git a/Tests/RunCMake/ExternalData/Directory1/DirData1.txt b/Tests/RunCMake/ExternalData/Directory1/DirData1.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory1/DirData1.txt
diff --git a/Tests/RunCMake/ExternalData/Directory2-result.txt b/Tests/RunCMake/ExternalData/Directory2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/Directory2-stderr.txt b/Tests/RunCMake/ExternalData/Directory2-stderr.txt
new file mode 100644
index 0000000..dc1a59a
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory2-stderr.txt
@@ -0,0 +1,10 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Data file reference in argument
+
+    DATA{Directory2/}
+
+  may not end in a slash!
+Call Stack \(most recent call first\):
+  .*
+  Directory2.cmake:3 \(ExternalData_Add_Test\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/Directory2.cmake b/Tests/RunCMake/ExternalData/Directory2.cmake
new file mode 100644
index 0000000..30b992e
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory2.cmake
@@ -0,0 +1,6 @@
+include(CTest)
+include(ExternalData)
+ExternalData_Add_Test(Data
+  NAME Test
+  COMMAND ${CMAKE_COMMAND} -E echo DATA{Directory2/}
+  )
diff --git a/Tests/RunCMake/ExternalData/Directory2.md5 b/Tests/RunCMake/ExternalData/Directory2.md5
new file mode 100644
index 0000000..93b3485
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory2.md5
@@ -0,0 +1 @@
+e8bb14af900b998b5a3df7e21dd07d58
diff --git a/Tests/RunCMake/ExternalData/Directory2/DirData2.txt b/Tests/RunCMake/ExternalData/Directory2/DirData2.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory2/DirData2.txt
diff --git a/Tests/RunCMake/ExternalData/Directory3-result.txt b/Tests/RunCMake/ExternalData/Directory3-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory3-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/Directory3-stderr.txt b/Tests/RunCMake/ExternalData/Directory3-stderr.txt
new file mode 100644
index 0000000..56a341e
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory3-stderr.txt
@@ -0,0 +1,14 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Data file referenced by argument
+
+    DATA{Directory3/\*}
+
+  corresponds to source tree path
+
+    Directory3/.
+
+  that does not exist as a file \(with or without an extension\)!
+Call Stack \(most recent call first\):
+  .*
+  Directory3.cmake:3 \(ExternalData_Add_Test\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/Directory3.cmake b/Tests/RunCMake/ExternalData/Directory3.cmake
new file mode 100644
index 0000000..55d8be9
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory3.cmake
@@ -0,0 +1,6 @@
+include(CTest)
+include(ExternalData)
+ExternalData_Add_Test(Data
+  NAME Test
+  COMMAND ${CMAKE_COMMAND} -E echo DATA{Directory3/*}
+  )
diff --git a/Tests/RunCMake/ExternalData/Directory3/DirData3.txt b/Tests/RunCMake/ExternalData/Directory3/DirData3.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/Directory3/DirData3.txt
diff --git a/Tests/RunCMake/ExternalData/LinkContentMD5-stdout.txt b/Tests/RunCMake/ExternalData/LinkContentMD5-stdout.txt
new file mode 100644
index 0000000..f77fca9
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/LinkContentMD5-stdout.txt
@@ -0,0 +1,3 @@
+-- Linked ToLink.txt.md5 to ExternalData MD5/c18ff9804c8deec9eaeb17063cda8b7b
+-- Raw data correctly transformed to content link!
+-- Staged content exists!
diff --git a/Tests/RunCMake/ExternalData/LinkContentMD5.cmake b/Tests/RunCMake/ExternalData/LinkContentMD5.cmake
new file mode 100644
index 0000000..41b4dee
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/LinkContentMD5.cmake
@@ -0,0 +1,22 @@
+include(ExternalData)
+set(ExternalData_LINK_CONTENT MD5)
+set(ExternalData_SOURCE_ROOT ${CMAKE_CURRENT_BINARY_DIR})
+set(ExternalData_BINARY_ROOT ${CMAKE_CURRENT_BINARY_DIR}/ExternalData)
+set(input ${CMAKE_CURRENT_BINARY_DIR}/ToLink.txt)
+set(output ${CMAKE_CURRENT_BINARY_DIR}/ExternalData/ToLink.txt)
+set(staged "${CMAKE_CURRENT_BINARY_DIR}/.ExternalData_MD5_c18ff9804c8deec9eaeb17063cda8b7b")
+file(REMOVE ${staged})
+file(REMOVE ${input}.md5)
+file(WRITE ${input} "To be transformed into a content link.")
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${output}")
+  message(STATUS "Raw data correctly transformed to content link!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected:\n  ${output}")
+endif()
+if(EXISTS "${staged}")
+  message(STATUS "Staged content exists!")
+else()
+  message(FATAL_ERROR "Staged content missing!")
+endif()
diff --git a/Tests/RunCMake/ExternalData/MissingData-result.txt b/Tests/RunCMake/ExternalData/MissingData-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/MissingData-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/MissingData-stderr.txt b/Tests/RunCMake/ExternalData/MissingData-stderr.txt
new file mode 100644
index 0000000..e794f95
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/MissingData-stderr.txt
@@ -0,0 +1,14 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Data file referenced by argument
+
+    DATA{MissingData.txt}
+
+  corresponds to source tree path
+
+    MissingData.txt
+
+  that does not exist as a file \(with or without an extension\)!
+Call Stack \(most recent call first\):
+  .*
+  MissingData.cmake:2 \(ExternalData_Add_Test\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/MissingData.cmake b/Tests/RunCMake/ExternalData/MissingData.cmake
new file mode 100644
index 0000000..b3c8a5c
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/MissingData.cmake
@@ -0,0 +1,5 @@
+include(ExternalData)
+ExternalData_Add_Test(Data
+  NAME Test
+  COMMAND ${CMAKE_COMMAND} -E echo DATA{MissingData.txt}
+  )
diff --git a/Tests/RunCMake/ExternalData/NoLinkInSource-stderr.txt b/Tests/RunCMake/ExternalData/NoLinkInSource-stderr.txt
new file mode 100644
index 0000000..496ad8a
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NoLinkInSource-stderr.txt
@@ -0,0 +1,6 @@
+CMake Warning at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  ExternalData_LINK_CONTENT cannot be used in-source
+Call Stack \(most recent call first\):
+  .*
+  NoLinkInSource.cmake:8 \(ExternalData_Expand_Arguments\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/NoLinkInSource-stdout.txt b/Tests/RunCMake/ExternalData/NoLinkInSource-stdout.txt
new file mode 100644
index 0000000..18946f0
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NoLinkInSource-stdout.txt
@@ -0,0 +1 @@
+-- Data reference correctly not transformed!
diff --git a/Tests/RunCMake/ExternalData/NoLinkInSource.cmake b/Tests/RunCMake/ExternalData/NoLinkInSource.cmake
new file mode 100644
index 0000000..cbf45eb
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NoLinkInSource.cmake
@@ -0,0 +1,14 @@
+include(ExternalData)
+set(ExternalData_LINK_CONTENT MD5)
+set(ExternalData_SOURCE_ROOT ${CMAKE_CURRENT_BINARY_DIR})
+set(ExternalData_BINARY_ROOT ${CMAKE_CURRENT_BINARY_DIR})
+set(input ${CMAKE_CURRENT_BINARY_DIR}/ToLink.txt)
+file(REMOVE ${input}.md5)
+file(WRITE ${input} "To be transformed into a content link.")
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${input}")
+  message(STATUS "Data reference correctly not transformed!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected no transformation.")
+endif()
diff --git a/Tests/RunCMake/ExternalData/NoURLTemplates-result.txt b/Tests/RunCMake/ExternalData/NoURLTemplates-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NoURLTemplates-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/NoURLTemplates-stderr.txt b/Tests/RunCMake/ExternalData/NoURLTemplates-stderr.txt
new file mode 100644
index 0000000..ad059d4
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NoURLTemplates-stderr.txt
@@ -0,0 +1,5 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  ExternalData_URL_TEMPLATES is not set!
+Call Stack \(most recent call first\):
+  NoURLTemplates.cmake:2 \(ExternalData_Add_Target\)
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExternalData/NoURLTemplates.cmake b/Tests/RunCMake/ExternalData/NoURLTemplates.cmake
new file mode 100644
index 0000000..8f0e069
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NoURLTemplates.cmake
@@ -0,0 +1,2 @@
+include(ExternalData)
+ExternalData_Add_Target(Data)
diff --git a/Tests/RunCMake/ExternalData/NormalData1-stdout.txt b/Tests/RunCMake/ExternalData/NormalData1-stdout.txt
new file mode 100644
index 0000000..2f2c770
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NormalData1-stdout.txt
@@ -0,0 +1 @@
+-- Data reference correctly transformed!
diff --git a/Tests/RunCMake/ExternalData/NormalData1.cmake b/Tests/RunCMake/ExternalData/NormalData1.cmake
new file mode 100644
index 0000000..d6cc384
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NormalData1.cmake
@@ -0,0 +1,13 @@
+include(ExternalData)
+set(ExternalData_URL_TEMPLATES
+  "file:///${CMAKE_CURRENT_SOURCE_DIR}/%(algo)/%(hash)"
+  )
+set(input Data.txt)
+set(output ${CMAKE_CURRENT_BINARY_DIR}/Data.txt)
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${output}")
+  message(STATUS "Data reference correctly transformed!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected:\n  ${output}")
+endif()
diff --git a/Tests/RunCMake/ExternalData/NormalData2-stdout.txt b/Tests/RunCMake/ExternalData/NormalData2-stdout.txt
new file mode 100644
index 0000000..2f2c770
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NormalData2-stdout.txt
@@ -0,0 +1 @@
+-- Data reference correctly transformed!
diff --git a/Tests/RunCMake/ExternalData/NormalData2.cmake b/Tests/RunCMake/ExternalData/NormalData2.cmake
new file mode 100644
index 0000000..c979b48
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NormalData2.cmake
@@ -0,0 +1,14 @@
+include(ExternalData)
+set(ExternalData_URL_TEMPLATES
+  "file:///${CMAKE_CURRENT_SOURCE_DIR}/%(algo)/%(hash)"
+  )
+set(ExternalData_BINARY_ROOT ${CMAKE_CURRENT_BINARY_DIR}/ExternalData)
+set(input Data.txt)
+set(output ${CMAKE_CURRENT_BINARY_DIR}/ExternalData/Data.txt)
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${output}")
+  message(STATUS "Data reference correctly transformed!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected:\n  ${output}")
+endif()
diff --git a/Tests/RunCMake/ExternalData/NormalData3-stdout.txt b/Tests/RunCMake/ExternalData/NormalData3-stdout.txt
new file mode 100644
index 0000000..2f2c770
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NormalData3-stdout.txt
@@ -0,0 +1 @@
+-- Data reference correctly transformed!
diff --git a/Tests/RunCMake/ExternalData/NormalData3.cmake b/Tests/RunCMake/ExternalData/NormalData3.cmake
new file mode 100644
index 0000000..e991122
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NormalData3.cmake
@@ -0,0 +1,14 @@
+include(ExternalData)
+set(ExternalData_URL_TEMPLATES
+  "file:///${CMAKE_CURRENT_SOURCE_DIR}/%(algo)/%(hash)"
+  )
+set(ExternalData_BINARY_ROOT ${CMAKE_CURRENT_BINARY_DIR}/ExternalData)
+set(input ${CMAKE_CURRENT_SOURCE_DIR}/Data.txt)
+set(output ${CMAKE_CURRENT_BINARY_DIR}/ExternalData/Data.txt)
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${output}")
+  message(STATUS "Data reference correctly transformed!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected:\n  ${output}")
+endif()
diff --git a/Tests/RunCMake/ExternalData/NormalDataSub1-stdout.txt b/Tests/RunCMake/ExternalData/NormalDataSub1-stdout.txt
new file mode 100644
index 0000000..2f2c770
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NormalDataSub1-stdout.txt
@@ -0,0 +1 @@
+-- Data reference correctly transformed!
diff --git a/Tests/RunCMake/ExternalData/NormalDataSub1.cmake b/Tests/RunCMake/ExternalData/NormalDataSub1.cmake
new file mode 100644
index 0000000..015e94c
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NormalDataSub1.cmake
@@ -0,0 +1,13 @@
+include(ExternalData)
+set(ExternalData_URL_TEMPLATES
+  "file:///${CMAKE_CURRENT_SOURCE_DIR}/%(algo)/%(hash)"
+  )
+set(input SubDirectory1/Data.txt)
+set(output ${CMAKE_CURRENT_BINARY_DIR}/SubDirectory1/Data.txt)
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${output}")
+  message(STATUS "Data reference correctly transformed!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected:\n  ${output}")
+endif()
diff --git a/Tests/RunCMake/ExternalData/NotUnderRoot-result.txt b/Tests/RunCMake/ExternalData/NotUnderRoot-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NotUnderRoot-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/ExternalData/NotUnderRoot-stderr.txt b/Tests/RunCMake/ExternalData/NotUnderRoot-stderr.txt
new file mode 100644
index 0000000..1f2eb1c
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NotUnderRoot-stderr.txt
@@ -0,0 +1,12 @@
+CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
+  Data file referenced by argument
+
+    DATA{../NotUnderRoot.txt}
+
+  does not lie under the top-level source directory
+
+    .*/Tests/RunCMake/ExternalData
+
+Call Stack \(most recent call first\):
+  .*
+  NotUnderRoot.cmake:2 \(ExternalData_Add_Test\)
diff --git a/Tests/RunCMake/ExternalData/NotUnderRoot.cmake b/Tests/RunCMake/ExternalData/NotUnderRoot.cmake
new file mode 100644
index 0000000..c7942d6
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/NotUnderRoot.cmake
@@ -0,0 +1,5 @@
+include(ExternalData)
+ExternalData_Add_Test(Data
+  NAME Test
+  COMMAND ${CMAKE_COMMAND} -E echo DATA{../NotUnderRoot.txt}
+  )
diff --git a/Tests/RunCMake/ExternalData/RunCMakeTest.cmake b/Tests/RunCMake/ExternalData/RunCMakeTest.cmake
new file mode 100644
index 0000000..c61527e
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/RunCMakeTest.cmake
@@ -0,0 +1,21 @@
+include(RunCMake)
+
+run_cmake(BadHashAlgo1)
+run_cmake(BadOption1)
+run_cmake(BadOption2)
+run_cmake(BadSeries1)
+run_cmake(BadSeries2)
+run_cmake(BadSeries3)
+run_cmake(Directory1)
+run_cmake(Directory2)
+run_cmake(Directory3)
+run_cmake(LinkContentMD5)
+run_cmake(MissingData)
+run_cmake(NoLinkInSource)
+run_cmake(NoURLTemplates)
+run_cmake(NormalData1)
+run_cmake(NormalData2)
+run_cmake(NormalData3)
+run_cmake(NormalDataSub1)
+run_cmake(NotUnderRoot)
+run_cmake(SubDirectory1)
diff --git a/Tests/RunCMake/ExternalData/SubDirectory1-stdout.txt b/Tests/RunCMake/ExternalData/SubDirectory1-stdout.txt
new file mode 100644
index 0000000..35a8cc1
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/SubDirectory1-stdout.txt
@@ -0,0 +1,2 @@
+-- Data reference correctly transformed in parent dir!
+-- Data reference correctly transformed in current dir!
diff --git a/Tests/RunCMake/ExternalData/SubDirectory1.cmake b/Tests/RunCMake/ExternalData/SubDirectory1.cmake
new file mode 100644
index 0000000..2989471
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/SubDirectory1.cmake
@@ -0,0 +1,5 @@
+include(ExternalData)
+set(ExternalData_URL_TEMPLATES
+  "file:///${CMAKE_CURRENT_SOURCE_DIR}/%(algo)/%(hash)"
+  )
+add_subdirectory(SubDirectory1)
diff --git a/Tests/RunCMake/ExternalData/SubDirectory1/CMakeLists.txt b/Tests/RunCMake/ExternalData/SubDirectory1/CMakeLists.txt
new file mode 100644
index 0000000..0782460
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/SubDirectory1/CMakeLists.txt
@@ -0,0 +1,19 @@
+set(input ../Data.txt)
+set(output ${CMAKE_BINARY_DIR}/Data.txt)
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${output}")
+  message(STATUS "Data reference correctly transformed in parent dir!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected:\n  ${output}")
+endif()
+
+set(input Data.txt)
+set(output ${CMAKE_CURRENT_BINARY_DIR}/Data.txt)
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${output}")
+  message(STATUS "Data reference correctly transformed in current dir!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected:\n  ${output}")
+endif()
diff --git a/Tests/RunCMake/ExternalData/SubDirectory1/Data.txt.md5 b/Tests/RunCMake/ExternalData/SubDirectory1/Data.txt.md5
new file mode 100644
index 0000000..93b3485
--- /dev/null
+++ b/Tests/RunCMake/ExternalData/SubDirectory1/Data.txt.md5
@@ -0,0 +1 @@
+e8bb14af900b998b5a3df7e21dd07d58