
/*
 * 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.nlpcraft.model.intent.idl.compiler.functions

import org.apache.nlpcraft.common.NCE
import org.junit.jupiter.api.Test

/**
  * Tests for 'math' functions.
  */
class NCIdlFunctionsMath extends NCIdlFunctions {
    private def testError(f: String): Unit =
        try {
            test(f)

            require(false)
        }
        catch {
            case e: NCE ⇒ println(s"Expected error: ${e.getLocalizedMessage}")
            case e: Exception ⇒ throw e
        }

    @Test
    def testError(): Unit = {
        // Invalid name.
        testError("xxx(1, 1)")
        testError("xxx()")

        // Invalid arguments count.
        testError("atan(1, 1) == 1")
        testError("pi(1)")
    }

    @Test
    def test(): Unit =
        test(
            "abs(2) == 2",
            "abs(-2.2) == 2.2",
            "ceil(1.8) == 2.0",
            "floor(1.1) == 1.0",
            "rint(1.8) == 2.0",
            "round(1.8) == 2",
            "signum(-1.8) == -1.0",
            "sqrt(4) - 2 < 0.001",
            "cbrt(8) - 2 < 0.001",
            "acos(8.1) != acos(9.1)",
            "asin(8.1) != asin(9)",
            "atan(8) != atan(9.1)",
            "cos(1.5708) < 0.001",
            "cos(1.5708) < 0.001",
            "sin(1.5708) > 0.999",
            "sin(1.5708) > 0.999",
            "tan(8) != tan(9)",
            "cosh(8) != cosh(9)",
            "sinh(8) != sinh(9)",
            "tanh(8) != tanh(9)",
            "atn2(8, 2) != atn2(9, 2)",
            "atn2(8.1, 2.1) != atn2(9.1, 2.1)",
            "degrees(1.5708) - 90 < 0.001",
            "radians(90) - 1.5708 < 0.001",
            "exp(2) != exp(3)",
            "expm1(8) != expm1(9)",
            "hypot(2, 3) - 3.606  < 0.001",
            "log(8) != log(9)",
            "log10(8) != log10(9)",
            "log1p(8) != log1p(9)",
            "pow(2, 2) - 4 < 0.001",
            "pow(2.0, 2.0) - 4 < 0.001",
            "pow(2, 2.0) - 4 < 0.001",
            "pow(2.0, 2) - 4 < 0.001",
            "pow(2.0, 2) - 4 < 0.001",
            "rand() < 1",
            "pi() - 3.142 < 0.01",
            "euler() - 2.718 < 0.01",
            "to_double(2) - 2.0 < 0.01",
            "1.1 == 1.1",
            "1.0 == 1",
            "1 == 1.0"
        )
}