@@ -18,36 +18,6 @@ describe('TrieNode', () => {
1818 expect ( trieNode . toString ( ) ) . toBe ( 'c:a,o' ) ;
1919 } ) ;
2020
21- describe ( 'removing child nodes' , ( ) => {
22- it ( 'should delete child node if the child node has NO children' , ( ) => {
23- const trieNode = new TrieNode ( 'c' ) ;
24- trieNode . addChild ( 'a' ) ;
25- expect ( trieNode . hasChild ( 'a' ) ) . toBe ( true ) ;
26- 27- trieNode . removeChild ( 'a' ) ;
28- expect ( trieNode . hasChild ( 'a' ) ) . toBe ( false ) ;
29- } ) ;
30- 31- it ( 'should NOT delete child node if the child node has children' , ( ) => {
32- const trieNode = new TrieNode ( 'c' ) ;
33- trieNode . addChild ( 'a' ) ;
34- const childNode = trieNode . getChild ( 'a' ) ;
35- childNode . addChild ( 'r' ) ;
36- 37- trieNode . removeChild ( 'a' ) ;
38- expect ( trieNode . hasChild ( 'a' ) ) . toEqual ( true ) ;
39- } ) ;
40- 41- it ( 'should NOT delete child node if the child node completes a word' , ( ) => {
42- const trieNode = new TrieNode ( 'c' ) ;
43- const IS_COMPLETE_WORD = true ;
44- trieNode . addChild ( 'a' , IS_COMPLETE_WORD ) ;
45- 46- trieNode . removeChild ( 'a' ) ;
47- expect ( trieNode . hasChild ( 'a' ) ) . toEqual ( true ) ;
48- } ) ;
49- } ) ;
50- 5121 it ( 'should get child nodes' , ( ) => {
5222 const trieNode = new TrieNode ( 'c' ) ;
5323
@@ -79,4 +49,32 @@ describe('TrieNode', () => {
7949
8050 expect ( trieNode . suggestChildren ( ) ) . toEqual ( [ 'a' , 'o' ] ) ;
8151 } ) ;
52+ 53+ it ( 'should delete child node if the child node has NO children' , ( ) => {
54+ const trieNode = new TrieNode ( 'c' ) ;
55+ trieNode . addChild ( 'a' ) ;
56+ expect ( trieNode . hasChild ( 'a' ) ) . toBe ( true ) ;
57+ 58+ trieNode . removeChild ( 'a' ) ;
59+ expect ( trieNode . hasChild ( 'a' ) ) . toBe ( false ) ;
60+ } ) ;
61+ 62+ it ( 'should NOT delete child node if the child node has children' , ( ) => {
63+ const trieNode = new TrieNode ( 'c' ) ;
64+ trieNode . addChild ( 'a' ) ;
65+ const childNode = trieNode . getChild ( 'a' ) ;
66+ childNode . addChild ( 'r' ) ;
67+ 68+ trieNode . removeChild ( 'a' ) ;
69+ expect ( trieNode . hasChild ( 'a' ) ) . toEqual ( true ) ;
70+ } ) ;
71+ 72+ it ( 'should NOT delete child node if the child node completes a word' , ( ) => {
73+ const trieNode = new TrieNode ( 'c' ) ;
74+ const IS_COMPLETE_WORD = true ;
75+ trieNode . addChild ( 'a' , IS_COMPLETE_WORD ) ;
76+ 77+ trieNode . removeChild ( 'a' ) ;
78+ expect ( trieNode . hasChild ( 'a' ) ) . toEqual ( true ) ;
79+ } ) ;
8280} ) ;
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