FastConstructorTest.java

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 *  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
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 *
 *    http://www.apache.org/licenses/LICENSE-2.0
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package me.sunlan.fastreflection;

import org.junit.jupiter.api.Test;

import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertSame;

class FastConstructorTest {
    @Test
    public void testStringCtorCharArray() throws Throwable {
        FastConstructor<String> fc = FastConstructor.create(String.class.getConstructor(char[].class));
        Object arg = new char[]{'a', 'b', 'c'};
        String result = (String) fc.invoke(arg);
        assertEquals("abc", result);
    }

    @Test
    public void testStringCtorCharArrayIntInt() throws Throwable {
        FastConstructor<String> fc = FastConstructor.create(String.class.getConstructor(char[].class, int.class, int.class));
        Object arg = new char[]{'a', 'b', 'c'};
        String result = (String) fc.invoke(arg, 1, 2);
        assertEquals("bc", result);
    }

    @Test
    public void testStringCtorByteArrayString() throws Throwable {
        String str = "abc";
        String encoding = "UTF-8";
        byte[] bytes = str.getBytes(encoding);
        FastConstructor<String> fc = FastConstructor.create(String.class.getConstructor(byte[].class, String.class));
        String result = (String) fc.invoke(bytes, encoding);
        assertEquals(str, result);
    }

    @Test
    public void testEqualsAndHashCode() throws NoSuchMethodException {
        Set<FastConstructor<String>> fastConstructorSet = new HashSet<>();
        FastConstructor<String> fc1 = FastConstructor.create(String.class.getConstructor(char[].class));
        FastConstructor<String> fc2 = FastConstructor.create(String.class.getConstructor(char[].class));
        fastConstructorSet.add(fc1);
        fastConstructorSet.add(fc2);
        assertEquals(1, fastConstructorSet.size());
        assertSame(fc1, new ArrayList<>(fastConstructorSet).get(0));
    }

    @Test
    public void testToString() throws NoSuchMethodException {
        Constructor<String> stringCtor = String.class.getConstructor(char[].class);
        FastConstructor<String> fc = FastConstructor.create(stringCtor);
        assertEquals(stringCtor.toString(), fc.toString());
    }
}