Fix justifcation; update tests

Author: gshiba

pandas/io/formats/format.py

@@ -650,8 +650,6 @@ def to_string(self):
                 self._chk_truncate()
                 strcols = self._to_str_columns()
                 text = self.adj.adjoin(1, *strcols)
-        if not self.index:
-            text = text.replace('\n ', '\n').strip()
         self.buf.writelines(text)
 
         if self.should_show_dimensions:

pandas/tests/io/formats/test_format.py

@@ -1272,15 +1272,29 @@ def test_to_string_no_index(self):
         df = DataFrame({'x': [1, 2, 3], 'y': [4, 5, 6]})
 
         df_s = df.to_string(index=False)
-        expected = "x  y\n1  4\n2  5\n3  6"
+        expected = " x  y\n 1  4\n 2  5\n 3  6"
+
+        assert df_s == expected
+
+        df = DataFrame({'x': [1, 2, -3], 'y': [4, 5, -6]})
+
+        df_s = df.to_string(index=False)
+        expected = " x  y\n 1  4\n 2  5\n-3 -6"
 
         assert df_s == expected
 
     def test_to_string_line_width_no_index(self):
         df = DataFrame({'x': [1, 2, 3], 'y': [4, 5, 6]})
 
         df_s = df.to_string(line_width=1, index=False)
-        expected = "x  \\\n1   \n2   \n3   \n\ny  \n4  \n5  \n6"
+        expected = " x  \\\n 1   \n 2   \n 3   \n\n y  \n 4  \n 5  \n 6  "
+
+        assert df_s == expected
+
+        df = DataFrame({'x': [1, 2, -3], 'y': [4, 5, -6]})
+
+        df_s = df.to_string(line_width=1, index=False)
+        expected = " x  \\\n 1   \n 2   \n-3   \n\n y  \n 4  \n 5  \n-6  "
 
         assert df_s == expected