@@ -80,9 +80,33 @@ public final void testLargeString() throws IOException {
8080 @ Test
8181 public final void testDistance () {
8282 Cosine instance = new Cosine ();
83+ 84+ double result = instance .distance ("ABC" , "ABCE" );
85+ assertEquals (0.29 , result , 0.01 );
86+ 8387 NullEmptyTests .testDistance (instance );
88+ }
89+ 90+ @ Test
91+ public final void testDistanceSmallString () {
92+ System .out .println ("test small string" );
93+ Cosine instance = new Cosine (3 );
94+ double result = instance .distance ("AB" , "ABCE" );
95+ assertEquals (1 , result , 0.00001 );
96+ }
97+ 98+ @ Test
99+ public final void testDistanceLargeString () throws IOException {
100+ 101+ System .out .println ("Test with large strings" );
102+ Cosine cos = new Cosine ();
103+ 104+ // read from 2 text files
105+ String string1 = readResourceFile ("71816-2.txt" );
106+ String string2 = readResourceFile ("11328-1.txt" );
107+ double similarity = cos .distance (string1 , string2 );
84108
85- // TODO: regular (non-null/empty) distance tests
109+ assertEquals ( 0.1885 , similarity , 0.001 );
86110 }
87111
88112 private static String readResourceFile (String file ) throws IOException {
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