From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sat, 4 Jul 2020 17:28:35 +0000 (-0700)
Subject: add compilation of the C examples to the test suite
X-Git-Tag: 2.46.0~20^2^2~195^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=14ff74f53804c47598e1a05546f806ef3458531d;p=graphviz

add compilation of the C examples to the test suite
---

diff --git a/rtest/test_examples.py b/rtest/test_examples.py
new file mode 100644
index 000000000..21c9fa23b
--- /dev/null
+++ b/rtest/test_examples.py
@@ -0,0 +1,32 @@
+# tests that examples provided with Graphviz compile correctly
+
+import os
+import platform
+import pytest
+import subprocess
+
+def c_compiler():
+    '''find the system's C compiler'''
+    return os.environ.get('CC', 'cc')
+
+@pytest.mark.parametrize('src', ['demo.c', 'dot.c', 'example.c', 'neatopack.c',
+  'simple.c'])
+def test_compile_example(src):
+    '''try to compile the example'''
+
+    # FIXME: if you know how to call the C compiler on Windows, please implement
+    # this functionality
+    if platform.system() == 'Windows':
+        pytest.skip('not implemented for Windows')
+
+    # construct an absolute path to the example
+    filepath = os.path.join(os.path.abspath(os.path.dirname(__file__)),
+      '../dot.demo', src)
+
+    cc = c_compiler()
+
+    libs = ('cgraph', 'gvc')
+
+    # ensure the C compiler can build this without error
+    subprocess.check_call([cc, '-o', os.devnull, filepath]
+      + ['-l{}'.format(l) for l in libs])