| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.calcite.avatica; |
| |
| import org.apache.calcite.avatica.util.Cursor; |
| |
| import org.hamcrest.Matcher; |
| |
| import java.util.List; |
| import java.util.function.BiPredicate; |
| |
| /** |
| * Custom Hamcrest matchers for the Avatica project. |
| */ |
| public class AvaticaMatchers { |
| |
| private static final double DELTA = 1e-15; |
| |
| private AvaticaMatchers() { |
| // private constructor |
| } |
| |
| /** |
| * Creates a matcher that matches if the result set of the examined accessor |
| * ({@link org.apache.calcite.avatica.util.AbstractCursor.ArrayAccessor}) is logically equal to |
| * the specified values. |
| * |
| * Equality between individual elements is usually determined by {@link Object#equals(Object)} but |
| * it can be more permissive when comparing approximate numbers (e.g., Float, Double) to account |
| * for some margin of error. |
| */ |
| public static Matcher<Cursor.Accessor> isArrayAccessorResult(List<Object> value, Class<?> type) { |
| BiPredicate<Object, Object> comparisonPredicate = Object::equals; |
| if (Float.class.equals(type)) { |
| comparisonPredicate = (f1, f2) -> Math.abs((float) f1 - (float) f2) <= DELTA; |
| } else if (Double.class.equals(type)) { |
| comparisonPredicate = (d1, d2) -> Math.abs((double) d1 - (double) d2) <= DELTA; |
| } |
| return new IsArrayAccessorResultSetEqual(value, comparisonPredicate); |
| } |
| } |
| |
| // End AvaticaMatchers.java |