/*
 * Copyright 2019 Scott Logic Ltd
 *
 * Licensed 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 com.scottlogic.datahelix.generator.common;

import java.math.BigDecimal;

public class TestRandomNumberGenerator implements RandomNumberGenerator {
    private double nextDoubleValue = 0;

    public void setNextDouble(double value) {
        nextDoubleValue = value;
    }

    @Override
    public int nextInt() {
        return 0;
    }

    @Override
    public int nextInt(int bound) {
        return 0;
    }

    @Override
    public long nextLong(long lowerInclusive, long upperExclusive) {
        long multiplier = (long) (nextDoubleValue * (double) (upperExclusive - lowerInclusive));
        return multiplier + lowerInclusive;
    }

    @Override
    public double nextDouble(double lower, double upper) {
        return nextDoubleValue * (upper - lower) + lower;
    }

    @Override
    public BigDecimal nextBigDecimal(BigDecimal lowerInclusive, BigDecimal upperExclusive) {
        return BigDecimal.valueOf(nextDouble(lowerInclusive.doubleValue(), upperExclusive.doubleValue()));
    }
}