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‎src/test/java/com/thealgorithms/dynamicprogramming/EditDistanceTest.java

+41-60
Original file line numberDiff line numberDiff line change
@@ -1,12 +1,12 @@
11
package com.thealgorithms.dynamicprogramming;
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3+
import static org.junit.jupiter.api.Assertions.*;
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import static org.junit.jupiter.api.Assertions.assertAll;
5+
36
import org.junit.jupiter.api.Test;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.CsvSource;
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7-
import static org.junit.jupiter.api.Assertions.*;
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import static org.junit.jupiter.api.Assertions.assertAll;
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1010
public class EditDistanceTest {
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1212
@ParameterizedTest
@@ -17,15 +17,9 @@ void testMinDistance(String str1, String str2, int expected) {
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1818
@Test
1919
void testEditDistanceStringNull() {
20-
assertThrows(NullPointerException.class, () -> {
21-
EditDistance.editDistance(null, "abc");
22-
});
23-
assertThrows(NullPointerException.class, () -> {
24-
EditDistance.editDistance("abc", null);
25-
});
26-
assertThrows(NullPointerException.class, () -> {
27-
EditDistance.editDistance(null, null);
28-
});
20+
assertThrows(NullPointerException.class, () -> { EditDistance.editDistance(null, "abc"); });
21+
assertThrows(NullPointerException.class, () -> { EditDistance.editDistance("abc", null); });
22+
assertThrows(NullPointerException.class, () -> { EditDistance.editDistance(null, null); });
2923
}
3024

3125
@Test
@@ -42,15 +36,9 @@ void testEditDistanceStringEmpty() {
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4337
@Test
4438
void testEditDistance_NullValue() {
45-
assertThrows(NullPointerException.class, () -> {
46-
EditDistance.editDistance(null, "hello");
47-
});
48-
assertThrows(NullPointerException.class, () -> {
49-
EditDistance.editDistance("hello", null);
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});
51-
assertThrows(NullPointerException.class, () -> {
52-
EditDistance.editDistance(null, null);
53-
});
39+
assertThrows(NullPointerException.class, () -> { EditDistance.editDistance(null, "hello"); });
40+
assertThrows(NullPointerException.class, () -> { EditDistance.editDistance("hello", null); });
41+
assertThrows(NullPointerException.class, () -> { EditDistance.editDistance(null, null); });
5442
}
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5644
@Test
@@ -67,15 +55,10 @@ public void testEditDistance_OneEmptyString() {
6755
@Test
6856
public void testEditDistance_OneEmptyString_Memoization() {
6957
int[][] storage = new int[1][6];
70-
;
7158
assertAll("String assertions",
72-
() -> assertEquals(5, EditDistance.editDistance("", "hello", storage)),
73-
() -> assertEquals(0, storage[0][0]),
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() -> assertEquals(0, storage[0][1]),
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() -> assertEquals(0, storage[0][2]),
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() -> assertEquals(0, storage[0][3]),
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() -> assertEquals(0, storage[0][4]),
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() -> assertEquals(5, storage[0][5])
59+
()
60+
-> assertEquals(5, EditDistance.editDistance("", "hello", storage)),
61+
() -> assertEquals(0, storage[0][0]), () -> assertEquals(0, storage[0][1]), () -> assertEquals(0, storage[0][2]), () -> assertEquals(0, storage[0][3]), () -> assertEquals(0, storage[0][4]), () -> assertEquals(5, storage[0][5])
7962
);
8063
}
8164

@@ -89,23 +72,27 @@ public void testEditDistance_EqualStrings() {
8972
public void testEditDistance_EqualStrings_Memoization() {
9073
int[][] storage = new int[4][4];
9174
assertAll("String assertions",
92-
() -> assertEquals(0, EditDistance.editDistance("abc", "abc", storage)),
93-
() -> assertEquals(0, storage[0][0]),
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() -> assertEquals(0, storage[0][1]),
95-
() -> assertEquals(0, storage[0][2]),
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() -> assertEquals(0, storage[0][3]),
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() -> assertEquals(0, storage[1][0]),
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() -> assertEquals(0, storage[1][1]),
99-
() -> assertEquals(0, storage[1][2]),
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() -> assertEquals(0, storage[1][3]),
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() -> assertEquals(0, storage[2][0]),
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() -> assertEquals(0, storage[2][1]),
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() -> assertEquals(0, storage[2][2]),
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() -> assertEquals(0, storage[2][3]),
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() -> assertEquals(0, storage[3][0]),
106-
() -> assertEquals(0, storage[3][1]),
107-
() -> assertEquals(0, storage[3][2]),
108-
() -> assertEquals(0, storage[3][3])
75+
() ->
76+
assertEquals(0, EditDistance.editDistance("abc", "abc", storage)),
77+
() ->
78+
assertEquals(0, storage[0][0]),
79+
() ->
80+
assertEquals(0, storage[0][1]),
81+
() ->
82+
assertEquals(0, storage[0][2]),
83+
() ->
84+
assertEquals(0, storage[0][3]),
85+
() ->
86+
assertEquals(0, storage[1][0]),
87+
() ->
88+
assertEquals(0, storage[1][1]),
89+
() ->
90+
assertEquals(0, storage[1][2]),
91+
() ->
92+
assertEquals(0, storage[1][3]),
93+
() ->
94+
assertEquals(0, storage[2][0]),
95+
() -> assertEquals(0, storage[2][1]), () -> assertEquals(0, storage[2][2]), () -> assertEquals(0, storage[2][3]), () -> assertEquals(0, storage[3][0]), () -> assertEquals(0, storage[3][1]), () -> assertEquals(0, storage[3][2]), () -> assertEquals(0, storage[3][3])
10996
);
11097
}
11198

@@ -120,16 +107,13 @@ public void testEditDistance_OneCharacterDifference() {
120107
public void testEditDistance_OneCharacterDifference_Memoization() {
121108
int[][] storage = new int[3][3];
122109
assertAll("All assertions",
123-
() -> assertEquals(1, EditDistance.editDistance("at", "it", storage)),
124-
() -> assertEquals(0, storage[0][0]),
125-
() -> assertEquals(1, storage[0][1]),
126-
() -> assertEquals(2, storage[0][2]),
127-
() -> assertEquals(1, storage[1][0]),
128-
() -> assertEquals(0, storage[1][1]),
129-
() -> assertEquals(1, storage[1][2]),
130-
() -> assertEquals(2, storage[2][0]),
131-
() -> assertEquals(1, storage[2][1]),
132-
() -> assertEquals(1, storage[2][2])
110+
() ->
111+
assertEquals(1, EditDistance.editDistance("at", "it", storage)),
112+
() ->
113+
assertEquals(0, storage[0][0]),
114+
() ->
115+
assertEquals(1, storage[0][1]),
116+
() -> assertEquals(2, storage[0][2]), () -> assertEquals(1, storage[1][0]), () -> assertEquals(0, storage[1][1]), () -> assertEquals(1, storage[1][2]), () -> assertEquals(2, storage[2][0]), () -> assertEquals(1, storage[2][1]), () -> assertEquals(1, storage[2][2])
133117
);
134118
}
135119

@@ -144,9 +128,6 @@ public void testEditDistance_GeneralCases() {
144128
public void testEditDistance_GeneralCases_Memoization() {
145129
int[][] storage = new int[7][8];
146130
assertEquals(3, EditDistance.editDistance("kitten", "sitting", storage));
147-
assertAll("All assertions",
148-
() -> assertEquals(0, storage[0][0]),
149-
() -> assertEquals(3, storage[6][7])
150-
);
131+
assertAll("All assertions", () -> assertEquals(0, storage[0][0]), () -> assertEquals(3, storage[6][7]));
151132
}
152133
}

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