Use pytest for Python bindings test suite

src/runtime/python/test_suite.py

@@ -0,0 +1,65 @@
+import pytest
+import pgf
+
+# readPGF
+
+@pytest.fixture(scope="module")
+def PGF():
+    return pgf.readPGF("../haskell/tests/basic.pgf")
+
+def test_readPGF_non_existant():
+    with pytest.raises(FileNotFoundError):
+        pgf.readPGF("../haskell/tests/abc.pgf")
+
+def test_readPGF_GF():
+    with pytest.raises(pgf.PGFError):
+        pgf.readPGF("../haskell/tests/basic.gf")
+
+@pytest.mark.skip(reason="Bug in runtime")
+def test_readPGF_NGF(NGF):
+    with pytest.raises(pgf.PGFError):
+        pgf.readPGF("./basic.ngf")
+
+# bootNGF
+
+@pytest.fixture(scope="module")
+def NGF():
+    return pgf.bootNGF("../haskell/tests/basic.pgf", "./basic.ngf")
+
+def test_bootNGF_non_existant():
+    with pytest.raises(FileNotFoundError):
+        pgf.bootNGF("../haskell/tests/abc.pgf", "./abc.ngf")
+
+def test_bootNGF_GF():
+    with pytest.raises(pgf.PGFError):
+        pgf.bootNGF("../haskell/tests/basic.gf", "./abc.ngf")
+
+@pytest.mark.skip(reason="Bug in runtime")
+def test_bootNGF_NGF(NGF):
+    with pytest.raises(pgf.PGFError):
+        pgf.bootNGF("./basic.ngf", "./abc.ngf")
+
+def test_bootNGF_existing(NGF):
+    with pytest.raises(FileExistsError):
+        pgf.bootNGF("../haskell/tests/basicp.gf", "./basic.ngf")
+
+# readNGF
+
+@pytest.mark.skip(reason="Bug in runtime")
+def test_readNGF_non_existant():
+    with pytest.raises(FileNotFoundError):
+        pgf.readNGF("./abc.ngf")
+
+@pytest.mark.skip(reason="Bug in runtime")
+def test_readNGF_GF():
+    with pytest.raises(pgf.PGFError):
+        pgf.readNGF("../haskell/tests/basic.gf")
+
+@pytest.mark.skip(reason="Bug in runtime")
+def test_readNGF_PGF():
+    with pytest.raises(pgf.PGFError):
+        pgf.readNGF("../haskell/tests/basic.pgf")
+
+def test_readNGF(NGF):
+    pgf.readNGF("./basic.ngf")
+    # TODO assert load worked