Fix layout width in ninja_syntax.py.

The last line would sometimes be needlessly longer than the layout
width. One example is line 67 in the build.ninja generated by
ninja's own configure.py: Before this patch, ninja_syntax would
create a 81 character line.

1 files changed, 12 insertions, 0 deletions

diff --git a/misc/ninja_test.py b/misc/ninja_test.py
index 897de72..b56033e 100755
--- a/misc/ninja_test.py
+++ b/misc/ninja_test.py
@@ -41,6 +41,18 @@ class TestLineWordWrap(unittest.TestCase):
                                       INDENT + 'y']) + '\n',
                          self.out.getvalue())
 
+    def test_short_words_indented(self):
+        # Test that indent is taking into acount when breaking subsequent lines.
+        # The second line should not be '    to tree', as that's longer than the
+        # test layout width of 8.
+        self.n._line('line_one to tree')
+        self.assertEqual('''\
+line_one $
+    to $
+    tree
+''',
+                         self.out.getvalue())
+
     def test_few_long_words_indented(self):
         # Check wrapping in the presence of indenting.
         self.n._line(' '.join(['x', LONGWORD, 'y']), indent=1)