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17 package org.apache.commons.text.similarity;
18
19 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
20 import static org.junit.jupiter.api.Assertions.assertEquals;
21 import static org.junit.jupiter.api.Assertions.assertThrows;
22
23 import org.junit.jupiter.api.BeforeAll;
24 import org.junit.jupiter.api.Test;
25 import org.junit.jupiter.params.ParameterizedTest;
26 import org.junit.jupiter.params.provider.MethodSource;
27
28
29
30
31 class JaroWinklerDistanceTest {
32
33 private static JaroWinklerDistance distance;
34
35 @BeforeAll
36 public static void setUp() {
37 distance = new JaroWinklerDistance();
38 }
39
40 @Test
41 void testApply_NullSimilarityInput() {
42 assertThrows(IllegalArgumentException.class, () -> distance.apply(null, new SimilarityCharacterInput("a")));
43 }
44
45 @Test
46 void testApply_SimilarityInputNull() {
47 assertThrows(IllegalArgumentException.class, () -> distance.apply(new SimilarityCharacterInput("a"), null));
48 }
49
50 @ParameterizedTest
51 @MethodSource("org.apache.commons.text.similarity.SimilarityInputTest#similarityInputsEquals()")
52 void testGetJaroWinklerDistance(final Class<?> cls) {
53 assertEquals(0.07501d, distance.apply(SimilarityInputTest.build(cls, "frog"), SimilarityInputTest.build(cls, "fog")), 0.00001d);
54 assertEquals(1.0d, distance.apply(SimilarityInputTest.build(cls, "fly"), SimilarityInputTest.build(cls, "ant")), 0.00000000000000000001d);
55 assertEquals(0.55834d, distance.apply(SimilarityInputTest.build(cls, "elephant"), SimilarityInputTest.build(cls, "hippo")), 0.00001d);
56 assertEquals(0.09334d, distance.apply(SimilarityInputTest.build(cls, "ABC Corporation"), SimilarityInputTest.build(cls, "ABC Corp")), 0.00001d);
57 assertEquals(0.04749d,
58 distance.apply(SimilarityInputTest.build(cls, "D N H Enterprises Inc"), SimilarityInputTest.build(cls, "D & H Enterprises, Inc.")), 0.00001d);
59 assertEquals(0.058d,
60 distance.apply(SimilarityInputTest.build(cls, "My Gym Children's Fitness Center"), SimilarityInputTest.build(cls, "My Gym. Childrens Fitness")),
61 0.00001d);
62 assertEquals(0.101982d, distance.apply(SimilarityInputTest.build(cls, "PENNSYLVANIA"), SimilarityInputTest.build(cls, "PENNCISYLVNIA")), 0.00001d);
63 assertEquals(0.028572d, distance.apply(SimilarityInputTest.build(cls, "/opt/software1"), SimilarityInputTest.build(cls, "/opt/software2")), 0.00001d);
64 assertEquals(0.058334d, distance.apply(SimilarityInputTest.build(cls, "aaabcd"), SimilarityInputTest.build(cls, "aaacdb")), 0.00001d);
65 assertEquals(0.088889d, distance.apply(SimilarityInputTest.build(cls, "John Horn"), SimilarityInputTest.build(cls, "John Hopkins")), 0.00001d);
66 assertEquals(0d, distance.apply(SimilarityInputTest.build(cls, ""), SimilarityInputTest.build(cls, "")), 0.00001d);
67 assertEquals(0d, distance.apply(SimilarityInputTest.build(cls, "foo"), SimilarityInputTest.build(cls, "foo")), 0.00001d);
68 assertEquals(1 - 0.94166d, distance.apply(SimilarityInputTest.build(cls, "foo"), SimilarityInputTest.build(cls, "foo ")), 0.00001d);
69 assertEquals(1 - 0.90666d, distance.apply(SimilarityInputTest.build(cls, "foo"), SimilarityInputTest.build(cls, "foo ")), 0.00001d);
70 assertEquals(1 - 0.86666d, distance.apply(SimilarityInputTest.build(cls, "foo"), SimilarityInputTest.build(cls, " foo ")), 0.00001d);
71 assertEquals(1 - 0.51111d, distance.apply(SimilarityInputTest.build(cls, "foo"), SimilarityInputTest.build(cls, " foo")), 0.00001d);
72 }
73
74 @Test
75 void testGetJaroWinklerDistance_NullNull() {
76 assertThrows(IllegalArgumentException.class, () -> distance.apply((String) null, null));
77 }
78
79 @Test
80 void testGetJaroWinklerDistance_NullString() {
81 assertThrows(IllegalArgumentException.class, () -> distance.apply(null, "clear"));
82 }
83
84 @Test
85 void testGetJaroWinklerDistance_StringNull() {
86 assertThrows(IllegalArgumentException.class, () -> distance.apply(" ", null));
87 }
88
89 @Test
90 void testGetJaroWinklerDistance_StringString() {
91 assertEquals(0.07501d, distance.apply("frog", "fog"), 0.00001d);
92 assertEquals(1.0d, distance.apply("fly", "ant"), 0.00000000000000000001d);
93 assertEquals(0.55834d, distance.apply("elephant", "hippo"), 0.00001d);
94 assertEquals(0.09334d, distance.apply("ABC Corporation", "ABC Corp"), 0.00001d);
95 assertEquals(0.04749d, distance.apply("D N H Enterprises Inc", "D & H Enterprises, Inc."), 0.00001d);
96 assertEquals(0.058d, distance.apply("My Gym Children's Fitness Center", "My Gym. Childrens Fitness"), 0.00001d);
97 assertEquals(0.101982d, distance.apply("PENNSYLVANIA", "PENNCISYLVNIA"), 0.00001d);
98 assertEquals(0.028572d, distance.apply("/opt/software1", "/opt/software2"), 0.00001d);
99 assertEquals(0.058334d, distance.apply("aaabcd", "aaacdb"), 0.00001d);
100 assertEquals(0.088889d, distance.apply("John Horn", "John Hopkins"), 0.00001d);
101 assertEquals(0d, distance.apply("", ""), 0.00001d);
102 assertEquals(0d, distance.apply("foo", "foo"), 0.00001d);
103 assertEquals(1 - 0.94166d, distance.apply("foo", "foo "), 0.00001d);
104 assertEquals(1 - 0.90666d, distance.apply("foo", "foo "), 0.00001d);
105 assertEquals(1 - 0.86666d, distance.apply("foo", " foo "), 0.00001d);
106 assertEquals(1 - 0.51111d, distance.apply("foo", " foo"), 0.00001d);
107 }
108
109 @Test
110 void testMatches() {
111 assertArrayEquals(new int[]{2, 0, 2}, JaroWinklerSimilarity.matches("ab", "aba"));
112 }
113
114 @SuppressWarnings("deprecation")
115 @Test
116 void testMatchesDeprecated() {
117 assertArrayEquals(new int[]{2, 0, 2}, JaroWinklerDistance.matches("ab", "aba"));
118 }
119
120 }