How to use IntArrayAssert_containsOnlyOnce_with_Integer_array_Test class of org.assertj.core.api.intarray package

Best Assertj code snippet using org.assertj.core.api.intarray.IntArrayAssert_containsOnlyOnce_with_Integer_array_Test

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...23 * Tests for <code>{@link IntArrayAssert#containsOnlyOnce(Integer[])}</​code>.24 *25 * @author Omar Morales Ortega26 */​27class IntArrayAssert_containsOnlyOnce_with_Integer_array_Test extends IntArrayAssertBaseTest {28 @Test29 void should_fail_if_values_is_null() {30 /​/​ GIVEN31 Integer[] values = null;32 /​/​ WHEN33 Throwable thrown = catchThrowable(() -> assertions.containsOnlyOnce(values));34 /​/​ THEN35 then(thrown).isInstanceOf(NullPointerException.class)36 .hasMessage(shouldNotBeNull("values").create());37 }38 @Override39 protected IntArrayAssert invoke_api_method() {40 return assertions.containsOnlyOnce(new Integer[] { 1, 2 });41 }...

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