Merge branch 'add-test-format'

src/cmake_language_server/formatter.py

@@ -91,11 +91,12 @@ def main(args: List[str] = None):
 
     parser = ArgumentParser()
     parser.add_argument('lists', type=Path, nargs='*', help='CMake list files')
-    parser.add_argument('-i',
+    group = parser.add_mutually_exclusive_group()
+    group.add_argument('-i',
                        '--inplace',
                        action='store_true',
                        help='inplace edit')
-    parser.add_argument('-d', '--diff', action='store_true', help='show diff')
+    group.add_argument('-d', '--diff', action='store_true', help='show diff')
     parser.add_argument('--version',
                         action='version',
                         version=f'%(prog)s {__version__}')
@@ -114,14 +115,12 @@ def main(args: List[str] = None):
             if not remain:
                 with listpath.open('w') as fp:
                     fp.write(formatted)
-        else:
+        elif args.diff:
-            if args.diff:
             diff = unified_diff(content.splitlines(True),
                                 formatted.splitlines(True), str(listpath),
                                 str(listpath), '(before formatting)',
                                 '(after formatting)')
             diffstr = ''.join(diff)
-                if diffstr:
             print(diffstr, end='')
         else:
             print(formatted, end='')

tests/test_fomatter.py

@@ -1,4 +1,4 @@
-from cmake_language_server.formatter import Formatter
+from cmake_language_server.formatter import Formatter, main
 from cmake_language_server.parser import ListParser
 
 
@@ -72,3 +72,63 @@ if()
   )  # h
 endif()
 ''')
+
+
+def test_main_noinput(capsys):
+    main([])
+    captured = capsys.readouterr()
+    assert captured.out == ''
+    assert captured.err == ''
+
+
+def test_main_file_1(capsys, tmp_path):
+    testfile1 = tmp_path / 'list1.cmake'
+    with testfile1.open('w') as fp:
+        fp.write(' a()')
+
+    main([str(testfile1)])
+    captured = capsys.readouterr()
+    assert captured.out == 'a()\n'
+    assert captured.err == ''
+
+
+def test_main_file_2(capsys, tmp_path):
+    testfile1 = tmp_path / 'list1.cmake'
+    with testfile1.open('w') as fp:
+        fp.write(' a()')
+    testfile2 = tmp_path / 'list2.cmake'
+    with testfile2.open('w') as fp:
+        fp.write(' b()')
+
+    main([str(testfile1), str(testfile2)])
+    captured = capsys.readouterr()
+    assert captured.out == 'a()\nb()\n'
+    assert captured.err == ''
+
+
+def test_main_inplace(capsys, tmp_path):
+    testfile1 = tmp_path / 'list1.cmake'
+    with testfile1.open('w') as fp:
+        fp.write(' a()')
+
+    main(['-i', str(testfile1)])
+    captured = capsys.readouterr()
+    assert captured.out == ''
+    assert captured.err == ''
+
+    with testfile1.open() as fp:
+        content = fp.read()
+    assert content == 'a()\n'
+
+
+def test_main_diff(capsys, tmp_path):
+    testfile1 = tmp_path / 'list1.cmake'
+    with testfile1.open('w') as fp:
+        fp.write(' a()')
+
+    main(['-d', str(testfile1)])
+    captured = capsys.readouterr()
+    assert str(testfile1) in captured.out
+    assert '- a()' in captured.out
+    assert '+a()' in captured.out
+    assert captured.err == ''