Move the CMake unit tests to auto/

This will allow the CI system to run the tests. The tests are only
run if cmake is found.

Change-Id: Ie73a56114c151871160bafcbf0b90b2d54620855
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

tests/auto/auto.pro

@@ -14,6 +14,7 @@ SUBDIRS += \
     other \
     widgets \
     printsupport \
+    cmake
 
 cross_compile:                              SUBDIRS -= tools
 !contains(QT_CONFIG, opengl):               SUBDIRS -= opengl

tests/auto/cmake/cmake.pro

@@ -0,0 +1,50 @@
+
+CMAKE_VERSION = $$system(cmake --version)
+
+# Cause make to do nothing.
+TEMPLATE = subdirs
+
+check.commands =
+isEmpty(CMAKE_VERSION) {
+    message("cmake executable not found. Not running CMake unit tests")
+} else {
+    CTEST_VERSION = $$system(ctest --version)
+    isEmpty(CTEST_VERSION) {
+        message("ctest executable not found. Not running CMake unit tests")
+    } else {
+        CMAKE_VERSION = $$last(CMAKE_VERSION)
+        CMAKE_VERSION_MAJOR = $$section(CMAKE_VERSION, ., 0, 0)
+        CMAKE_VERSION_MINOR = $$section(CMAKE_VERSION, ., 1, 1)
+        CMAKE_VERSION_PATCH = $$section(CMAKE_VERSION, ., 2, 2)
+
+        VERSION_OK =
+        greaterThan(CMAKE_VERSION_MAJOR, 2) {
+            VERSION_OK = 1
+        } else:greaterThan(CMAKE_VERSION_MAJOR, 1):greaterThan(CMAKE_VERSION_MINOR, 8) {
+            VERSION_OK = 1
+        } else:greaterThan(CMAKE_VERSION_MAJOR, 1):greaterThan(CMAKE_VERSION_MINOR, 7):greaterThan(CMAKE_VERSION_PATCH, 2) {
+            VERSION_OK = 1
+        }
+
+        isEmpty(VERSION_OK) {
+            message("cmake $$CMAKE_VERSION is too old for this test.")
+        } else {
+            SET = set
+            equals(QMAKE_DIR_SEP, "/"):SET = export
+
+            CMAKE_BUILD_TYPE = Debug
+            CONFIG(release, debug|release):CMAKE_BUILD_TYPE = Release
+
+            BUILD_DIR = $$replace($$list($$OUT_PWD/build), /, $$QMAKE_DIR_SEP)
+
+            check.commands = \
+                cd . && $$SET CMAKE_PREFIX_PATH=$$[QT_INSTALL_PREFIX] && \
+                $(MKDIR) $$BUILD_DIR && cd $$BUILD_DIR && \
+                cmake $$_PRO_FILE_PWD_ -DCMAKE_BUILD_TYPE=$${CMAKE_BUILD_TYPE} && \
+                $(TESTRUNNER) ctest --output-on-failure
+
+        }
+    }
+}
+
+QMAKE_EXTRA_TARGETS *= check