Add windows build

tests/conftest.py

@@ -7,10 +7,16 @@ def cmake_build(shared_datadir):
     source = shared_datadir / 'cmake'
     build = source / 'build'
     build.mkdir()
-    run(['cmake', source],
-        check=True,
-        cwd=build,
-        stdout=PIPE,
-        stderr=PIPE,
-        universal_newlines=True)
+    p = run(['cmake', str(source)],
+            cwd=build,
+            stdout=PIPE,
+            stderr=PIPE,
+            universal_newlines=True)
+    if p.returncode != 0:
+        import logging
+        import os
+        logging.error(os.environ)
+        logging.error(p.stdout)
+        logging.error(p.stderr)
+        raise RuntimeError("CMake failed")
     yield build

tests/test_api.py

@@ -35,7 +35,14 @@ def test_read_cmake_files(cmake_build):
     assert api.query()
     api.read_reply()
 
-    assert 'GNU' in api.get_variable_doc('CMAKE_CXX_COMPILER_ID')
+    import platform
+    system = platform.system()
+    if system == 'Linux':
+        assert 'GNU' in api.get_variable_doc('CMAKE_CXX_COMPILER_ID')
+    elif system == 'Windows':
+        assert 'MSVC' in api.get_variable_doc('CMAKE_CXX_COMPILER_ID')
+    else:
+        raise RuntimeError('Unexpected system')
 
 
 def test_parse_commands(cmake_build):