Added test for change for issue #1732.

1 files changed, 24 insertions, 0 deletions

diff --git a/tests/test_other.py b/tests/test_other.py
index 0dd0bd12..1144ec26 100644
--- a/tests/test_other.py
+++ b/tests/test_other.py
@@ -2074,3 +2074,27 @@ int main()
     Popen([PYTHON, EMCC, path_from_root('tests', 'linpack.c'), '-O2', '-DSP', '--llvm-opts', '''['-O3', '-vectorize', '-vectorize-loops', '-bb-vectorize-vector-bits=128', '-force-vector-width=4']''']).communicate()
     self.assertContained('Unrolled Single  Precision', run_js('a.out.js'))
 
+  def test_dependency_file(self):
+    # Issue 1732: -MMD (and friends) create dependency files that need to be
+    # copied from the temporary directory.
+
+    open(os.path.join(self.get_dir(), 'test.cpp'), 'w').write(r'''
+      #include "test.hpp"
+
+      void my_function()
+      {
+      }
+    ''')
+    open(os.path.join(self.get_dir(), 'test.hpp'), 'w').write(r'''
+      void my_function();
+    ''')
+
+    Popen([PYTHON, EMCC, '-MMD', '-c', os.path.join(self.get_dir(), 'test.cpp'), '-o',
+      os.path.join(self.get_dir(), 'test.o')]).communicate()
+
+    assert os.path.exists(os.path.join(self.get_dir(), 'test.d')), 'No dependency file generated'
+    deps = open(os.path.join(self.get_dir(), 'test.d')).read()
+    head, tail = deps.split( ':', 2 )
+    assert 'test.o' in head, 'Invalid dependency target'
+    assert 'test.cpp' in tail and 'test.hpp' in tail, 'Invalid dependencies generated'
+