public static Number mean(List<Number> list) { return meanFunction.invoke(list).cata(e -> null, Function.identity()); }
@Before public void setUp() { meanFunction = new NNMeanFunction(); }
public FEELFnResult<BigDecimal> invoke(@ParameterName( "n" ) Object[] list) { if ( list == null ) { return FEELFnResult.ofResult( null ); } return invoke( Arrays.asList( list ) ); } }
@Test public void invokeListWithIntegers() { FunctionTestUtil.assertResult(meanFunction.invoke(Arrays.asList(10, 20, 30)), BigDecimal.valueOf(20)); FunctionTestUtil.assertResult(meanFunction.invoke(Arrays.asList(10, 20, 30, -10, -20, -30)), BigDecimal.ZERO); FunctionTestUtil.assertResult(meanFunction.invoke(Arrays.asList(0, 0, 1)), new BigDecimal("0.3333333333333333333333333333333333")); }
@Test public void invokeArrayWithIntegers() { FunctionTestUtil.assertResult(meanFunction.invoke(new Object[]{10, 20, 30}), BigDecimal.valueOf(20)); FunctionTestUtil.assertResult(meanFunction.invoke(new Object[]{10, 20, 30, -10, -20, -30}), BigDecimal.ZERO); FunctionTestUtil.assertResult(meanFunction.invoke(new Object[]{0, 0, 1}), new BigDecimal("0.3333333333333333333333333333333333")); }
@Test public void invokeUnconvertableNumber() { FunctionTestUtil.assertResultError(meanFunction.invoke(Double.POSITIVE_INFINITY), InvalidParametersEvent.class); FunctionTestUtil.assertResultError(meanFunction.invoke(Double.NEGATIVE_INFINITY), InvalidParametersEvent.class); FunctionTestUtil.assertResultError(meanFunction.invoke(Double.NaN), InvalidParametersEvent.class); }
@Test public void invokeListParamSupportedTypesWithNull() { FunctionTestUtil.assertResult(meanFunction.invoke(Arrays.asList(20, 30, null, (long) 40, null, BigDecimal.TEN)), BigDecimal.valueOf(25)); }
@Test public void invokeNumberFloat() { FunctionTestUtil.assertResult(meanFunction.invoke(10.1f), BigDecimal.valueOf(10.1)); }
@Test public void invokeArrayParamSupportedTypesWithNull() { FunctionTestUtil.assertResult(meanFunction.invoke(new Object[]{20, 30, null, (long) 40, null, BigDecimal.TEN}), BigDecimal.valueOf(25)); }
@Test public void invokeNumberDoubleWithoutDecimalPart() { FunctionTestUtil.assertResult(meanFunction.invoke(10d), BigDecimal.valueOf(10)); }
@Test public void invokeNumberDoubleWithDecimalPart() { FunctionTestUtil.assertResult(meanFunction.invoke(10.1d), BigDecimal.valueOf(10.1)); }
@Test public void invokeListEmpty() { FunctionTestUtil.assertResult(meanFunction.invoke(Collections.emptyList()), null); }
@Test public void invokeListTypeHeterogenous() { FunctionTestUtil.assertResultError(meanFunction.invoke(Arrays.asList(1, "test")), InvalidParametersEvent.class); }
@Test public void invokeNumberInteger() { FunctionTestUtil.assertResult(meanFunction.invoke(10), BigDecimal.TEN); }
@Test public void invokeListNull() { FunctionTestUtil.assertResult(meanFunction.invoke((List) null), null); }
@Test public void invokeArrayNull() { FunctionTestUtil.assertResult(meanFunction.invoke((Object[]) null), null); }
@Test public void invokeArrayEmpty() { FunctionTestUtil.assertResult(meanFunction.invoke(new Object[]{}), null); }
@Test public void invokeNumberNull() { FunctionTestUtil.assertResult(meanFunction.invoke((Number) null), null); }