   if the expression uses the comparison operator, the message
   will show the values of the two sides. The assertion
 
-      assert 1+2+3+4 > 15
+      assert 1 + 2 + 3 + 4 > 15
 
    will fail with the message:
 
       Assertion with > failed
-      code: 1+2+3+4 > 15
-      lhs:  10
-      rhs:  15
+      code:  1 + 2 + 3 + 4 > 15
+      left:  10
+      right: 15
 
   Similarly, if a match expression is given, it will report
   any failure in terms of that match. Given

  you'll see:

      match (=) failed
      code: [one] = [two]
      rhs:  [2]

  Keep in mind that `assert` does not change its semantics
  based on the expression. In other words, the expression

  `some_fun()` returns `13`):

      Comparison (using ==) failed in:
      code:  some_fun() == 10
      left:  13
      right: 10

  This module also provides other convenience functions
  like `assert_in_delta` and `assert_raise` to easily handle
