1 files changed, 38 insertions, 0 deletions
diff --git a/test/test_language_generators.py b/test/test_language_generators.py
new file mode 100644
index 00000000..3db1ac91
--- /dev/null
+++ b/test/test_language_generators.py
@@ -0,0 +1,38 @@
+import os
+
+from libpathod.language import generators
+import tutils
+
+
+def test_randomgenerator():
+    g = generators.RandomGenerator("bytes", 100)
+    assert repr(g)
+    assert len(g[:10]) == 10
+    assert len(g[1:10]) == 9
+    assert len(g[:1000]) == 100
+    assert len(g[1000:1001]) == 0
+    assert g[0]
+
+
+def test_literalgenerator():
+    g = generators.LiteralGenerator("one")
+    assert repr(g)
+    assert g[:] == "one"
+    assert g[1] == "n"
+
+
+def test_filegenerator():
+    with tutils.tmpdir() as t:
+        path = os.path.join(t, "foo")
+        f = open(path, "wb")
+        f.write("x" * 10000)
+        f.close()
+        g = generators.FileGenerator(path)
+        assert len(g) == 10000
+        assert g[0] == "x"
+        assert g[-1] == "x"
+        assert g[0:5] == "xxxxx"
+        assert repr(g)
+        # remove all references to FileGenerator instance to close the file
+        # handle.
+        del g