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Create CombinationTest.java #56

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36 changes: 36 additions & 0 deletions CombinationTest.java
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Original file line number Diff line number Diff line change
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package testing;

import org.junit.Assert;
import org.junit.Test;

public class CombinationTest {
@Test
public void test1() {
long com1 = Combination.ncr(2, -1);
Assert.assertEquals(-1, com1);
}

@Test
public void test2() {
long com2 = Combination.ncr(-2, 1);
Assert.assertEquals(-1, com2);
}

@Test
public void test3() {
long com3 = Combination.ncr(2, 3);
Assert.assertEquals(-1, com3);
}

@Test
public void test4() {
long com4 = Combination.ncr(6, 4);
Assert.assertEquals(15, com4);
}

@Test
public void test5() {
long com5 = Combination.ncr(6, 0);
Assert.assertEquals(1, com5);
}
}