Add test for set_meta command.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>

tests/test_cli.py

@@ -5,6 +5,7 @@ from click.testing import CliRunner
 
 from sigal import init
 from sigal import serve
+from sigal import set_meta
 
 
 def test_init(tmpdir):
@@ -32,3 +33,32 @@ def test_serve(tmpdir):
 
     result = runner.invoke(serve, ['-c', config_file])
     assert result.exit_code == 1
+
+def test_set_meta(tmpdir):
+
+    testdir = tmpdir.mkdir("test")
+
+    testfile = tmpdir.join("test.jpg")
+    testfile.write("")
+
+    runner = CliRunner()
+    result = runner.invoke(set_meta, [str(testdir), "title", "testing"])
+
+    assert result.exit_code == 0
+    assert result.output.startswith("1 metadata key(s) written to")
+    assert os.path.isfile(str(testdir.join("index.md")))
+    assert testdir.join("index.md").read() == "Title: testing\n"
+
+    # Run again, should give file exists error
+    result = runner.invoke(set_meta, [str(testdir), "title", "testing"])
+    assert result.exit_code == 2
+
+    result = runner.invoke(set_meta, [str(testdir.join("non-existant.jpg")), "title", "testing"])
+    assert result.exit_code == 1
+
+    result = runner.invoke(set_meta, [str(testfile), "title", "testing"])
+
+    assert result.exit_code == 0
+    assert result.output.startswith("1 metadata key(s) written to")
+    assert os.path.isfile(str(tmpdir.join("test.md")))
+    assert tmpdir.join("test.md").read() == "Title: testing\n"