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SolutionTest.java
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SolutionTest.java
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package array.apmiss;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.Arrays;
import org.junit.jupiter.api.Test;
public class SolutionTest {
private final Solution solution = new Solution();
@Test
public void findMissing_Increasing_ExpectedResult() {
int missing = solution.findMissing(Arrays.asList(-5, 5, 10, 15));
assertThat(missing).isEqualTo(0);
missing = solution.findMissing(Arrays.asList(2, 6, 8, 10, 12, 14, 16));
assertThat(missing).isEqualTo(4);
missing = solution.findMissing(Arrays.asList(2, 4, 6, 10, 12, 14, 16));
assertThat(missing).isEqualTo(8);
missing = solution.findMissing(Arrays.asList(2, 4, 6, 8, 12, 14, 16));
assertThat(missing).isEqualTo(10);
missing = solution.findMissing(Arrays.asList(2, 4, 6, 8, 10, 14, 16));
assertThat(missing).isEqualTo(12);
}
@Test
public void findMissing_Decreasing_ExpectedResult() {
int missing = solution.findMissing(Arrays.asList(18, -18, -36));
assertThat(missing).isEqualTo(0);
missing = solution.findMissing(Arrays.asList(-10, -12, -16, -18, -20, -22));
assertThat(missing).isEqualTo(-14);
}
@Test
public void findMissing_MissingEnd_ExpectedResult() {
int missing = solution.findMissing(Arrays.asList(1, 2, 3, 4, 5, 6));
assertThat(missing).isEqualTo(7);
missing = solution.findMissing(Arrays.asList(-16, -12, -8, -4, 0));
assertThat(missing).isEqualTo(4);
}
}