Add negative compilation tests.

4 files changed, 76 insertions, 0 deletions

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 3bd3dfe..bc16eba 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,5 +1,7 @@
 ## gflags tests
 
+find_package (PythonInterp)
+
 # ----------------------------------------------------------------------------
 # output directories
 set (CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/Testing/bin")
@@ -18,12 +20,32 @@ link_libraries (gflags_nothreads)
 configure_file (gflags_unittest.cc gflags_unittest-main.cc COPYONLY)
 configure_file (gflags_unittest.cc gflags_unittest_main.cc COPYONLY)
 
+set (SRCDIR "${CMAKE_CURRENT_SOURCE_DIR}/nc")
+configure_file (gflags_nc.py.in "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/nc.py" @ONLY)
+
 add_executable (strip_flags gflags_strip_flags_test.cc)
 add_executable (unittest    gflags_unittest.cc)
 add_executable (unittest2   gflags_unittest-main.cc)
 add_executable (unittest3   gflags_unittest_main.cc)
 
 # ----------------------------------------------------------------------------
+# (negative) compilation tests
+if (PYTHON_EXECUTABLE)
+  macro (add_nc_test name)
+    add_test (
+      NAME nc_${name}
+      COMMAND "${PYTHON_EXECUTABLE}" "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/nc.py" ${name}
+    )
+  endmacro ()
+
+  add_nc_test (sanity)
+  add_nc_test (swapped_args)
+  add_nc_test (int_instead_of_bool)
+  add_nc_test (bool_in_quotes)
+  add_nc_test (define_string_with_0)
+endif ()
+
+# ----------------------------------------------------------------------------
 # test commands
 add_test (
   NAME    strip_flags
diff --git a/test/gflags_nc.py.in b/test/gflags_nc.py.in
new file mode 100644
index 0000000..7636782
--- /dev/null
+++ b/test/gflags_nc.py.in
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+
+import os
+import sys
+import subprocess
+import shutil
+
+CMAKE      = '@CMAKE_COMMAND@'
+TMPDIR     = '@TEMPDIR@'
+SRCDIR     = '@SRCDIR@'
+GFLAGS_DIR = '@gflags_BINARY_DIR@'
+
+if __name__ == "__main__":
+  if len(sys.argv) != 2:
+    sys.stderr.write(' '.join(['usage:', sys.argv[0], '<test_name>\n']))
+    sys.exit(1)
+  test_name = sys.argv[1]
+  bindir = os.path.join(TMPDIR, '_'.join(['nc', test_name]))
+  if TMPDIR == '':
+    sys.stderr.write('Temporary directory not set!\n')
+    sys.exit(1)
+  # create build directory
+  if os.path.isdir(bindir): shutil.rmtree(bindir)
+  os.makedirs(bindir)
+  # configure the build tree
+  if subprocess.call([CMAKE, '-Dgflags_DIR:PATH='+GFLAGS_DIR, '-DTEST_NAME:STRING='+test_name, SRCDIR], cwd=bindir) != 0:
+    sys.stderr.write('Failed to configure the build tree!\n')
+    sys.exit(1)
+  # try build, which is supposed to fail (except in case of the sanity check)
+  if subprocess.call([CMAKE, '--build', bindir], cwd=bindir) == 0 and test_name != 'sanity':
+    sys.stderr.write('Build expected to fail, but it succeeded!\n')
+    sys.exit(1)
+  sys.exit(0)
diff --git a/test/nc/CMakeLists.txt b/test/nc/CMakeLists.txt
new file mode 100644
index 0000000..823fc67
--- /dev/null
+++ b/test/nc/CMakeLists.txt
@@ -0,0 +1,16 @@
+## gflags negative compilation tests
+
+cmake_minimum_required (VERSION 2.8)
+
+if (NOT TEST_NAME)
+  message (FATAL_ERROR "Missing TEST_NAME CMake flag")
+endif ()
+string (TOUPPER ${TEST_NAME} TEST_NAME_UPPER)
+
+project (gflags_nc_${TEST_NAME})
+
+find_package (gflags REQUIRED)
+include_directories (${gflags_INCLUDE_DIR} "${CMAKE_CURRENT_SOURCE_DIR}/..")
+link_libraries (gflags_nothreads)
+add_definitions (-DTEST_${TEST_NAME_UPPER})
+add_executable (gflags_nc_${TEST_NAME} gflags_nc.cc)
diff --git a/test/gflags_nc.cc b/test/nc/gflags_nc.cc
index c283612..23398f2 100644
--- a/test/gflags_nc.cc
+++ b/test/nc/gflags_nc.cc
@@ -66,3 +66,8 @@ DEFINE_string(some_string_flag,
               "Trying to construct a string by passing 0 would cause a crash.");
 
 #endif
+
+int main(int, char **)
+{
+  return 0;
+}