From 75bda3864ea033f976773df80f22fea2992a165d Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Thu, 2 Sep 2010 11:33:57 -0400
Subject: Add tests for unused command line variables

---
 Tests/CMakeLists.txt               | 28 ++++++++++++++++++++++++++++
 Tests/VariableUsage/CMakeLists.txt |  1 +
 2 files changed, 29 insertions(+)
 create mode 100644 Tests/VariableUsage/CMakeLists.txt

diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index 5383bda..6415472 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -1074,6 +1074,34 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
     LIST(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/BundleGeneratorTest")
   ENDIF(APPLE AND CTEST_TEST_CPACK)
 
+  ADD_TEST(WarnUnusedCliUnused ${CMAKE_CTEST_COMMAND}
+    --build-and-test
+    "${CMake_SOURCE_DIR}/Tests/VariableUsage"
+    "${CMake_BINARY_DIR}/Tests/WarnUnusedCliUnused"
+    --build-generator ${CMAKE_TEST_GENERATOR}
+    --build-makeprogram ${CMAKE_TEST_MAKEPROGRAM}
+    --build-noclean
+    --build-project WarnUnusedCliUnused
+    --build-options "-DUNUSED_VARIABLE=Unused")
+  SET_TESTS_PROPERTIES(WarnUnusedCliUnused PROPERTIES
+    PASS_REGULAR_EXPRESSION "warning: The variable, \"UNUSED_VARIABLE\"")
+  LIST(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/WarnUnusedCliUnused")
+
+  ADD_TEST(WarnUnusedCliUsed ${CMAKE_CTEST_COMMAND}
+    --build-and-test
+    "${CMake_SOURCE_DIR}/Tests/VariableUsage"
+    "${CMake_BINARY_DIR}/Tests/WarnUnusedCliUsed"
+    --build-generator ${CMAKE_TEST_GENERATOR}
+    --build-makeprogram ${CMAKE_TEST_MAKEPROGRAM}
+    --build-noclean
+    --build-project WarnUnusedCliUsed
+    --build-options "-DUSED_VARIABLE=Usage proven")
+  SET_TESTS_PROPERTIES(WarnUnusedCliUsed PROPERTIES
+    PASS_REGULAR_EXPRESSION "Usage proven")
+  SET_TESTS_PROPERTIES(WarnUnusedCliUsed PROPERTIES
+    FAIL_REGULAR_EXPRESSION "warning: The variable, \"USED_VARIABLE\"")
+  LIST(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/WarnUnusedCliUsed")
+
   # Make sure CTest can handle a test with no newline in output.
   ADD_TEST(CTest.NoNewline
     ${CMAKE_CMAKE_COMMAND} -E echo_append "This line has no newline!")
diff --git a/Tests/VariableUsage/CMakeLists.txt b/Tests/VariableUsage/CMakeLists.txt
new file mode 100644
index 0000000..4da1f56
--- /dev/null
+++ b/Tests/VariableUsage/CMakeLists.txt
@@ -0,0 +1 @@
+message(STATUS "${USED_VARIABLE}")
-- 
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