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Fix style in AmicableNumbers (#4263)

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This commit is contained in:
Albina Gimaletdinova
2023-07-26 16:52:46 +03:00
committed by GitHub
parent e5c7a08874
commit fc274c84f8
4 changed files with 91 additions and 54 deletions
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45
src/test/java/com/thealgorithms/maths/AmicableNumberTest.java
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@ -2,14 +2,57 @@ package com.thealgorithms.maths;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.Set;
import org.apache.commons.lang3.tuple.Pair;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
public class AmicableNumberTest {
private static final String INVALID_RANGE_EXCEPTION_MESSAGE = "Given range of values is invalid!";
private static final String INVALID_NUMBERS_EXCEPTION_MESSAGE = "Input numbers must be natural!";
@Test
void testAmicableNumber() {
public void testShouldThrowExceptionWhenInvalidRangeProvided() {
checkInvalidRange(0, 0);
checkInvalidRange(0, 1);
checkInvalidRange(1, 0);
checkInvalidRange(10, -1);
checkInvalidRange(-1, 10);
}
@Test
public void testShouldThrowExceptionWhenInvalidNumbersProvided() {
checkInvalidNumbers(0, 0);
checkInvalidNumbers(0, 1);
checkInvalidNumbers(1, 0);
}
@Test
public void testAmicableNumbers() {
assertThat(AmicableNumber.isAmicableNumber(220, 284)).isTrue();
assertThat(AmicableNumber.isAmicableNumber(1184, 1210)).isTrue();
assertThat(AmicableNumber.isAmicableNumber(2620, 2924)).isTrue();
}
@Test
public void testShouldFindAllAmicableNumbersInRange() {
// given
var expectedResult = Set.of(Pair.of(220, 284), Pair.of(1184, 1210), Pair.of(2620, 2924));
// when
Set<Pair<Integer, Integer>> result = AmicableNumber.findAllInRange(1, 3000);
// then
Assertions.assertTrue(result.containsAll(expectedResult));
}
private static void checkInvalidRange(int from, int to) {
IllegalArgumentException exception = Assertions.assertThrows(IllegalArgumentException.class, () -> AmicableNumber.findAllInRange(from, to));
Assertions.assertEquals(exception.getMessage(), INVALID_RANGE_EXCEPTION_MESSAGE);
}
private static void checkInvalidNumbers(int a, int b) {
IllegalArgumentException exception = Assertions.assertThrows(IllegalArgumentException.class, () -> AmicableNumber.isAmicableNumber(a, b));
Assertions.assertEquals(exception.getMessage(), INVALID_NUMBERS_EXCEPTION_MESSAGE);
}
}