| Several tests of the DOM normalize() function. |
| test1 (two non-empty text nodes): PASSED |
| test2 (three non-empty text nodes): PASSED |
| test3 (non-empty text nodes mixed with elements): PASSED |
| test4 (single empty text node): PASSED |
| test5 (empty text node between elements): PASSED |
| test6 (empty text nodes before non-empty node): PASSED |
| test7 (empty text nodes after non-empty node): PASSED |
| test8 (empty text nodes between non-empty nodes): PASSED |
| test9 (empty and non-empty text nodes mixed with elements): PASSED |
| test10 (mixed cases including deeper nested text nodes): PASSED |
| |