SimpleParseSignatureTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package com.oracle.truffle.nfi.test.parser;

import com.oracle.truffle.nfi.types.NativeSignature;
import com.oracle.truffle.nfi.types.NativeSimpleType;
import com.oracle.truffle.nfi.types.Parser;
import java.util.ArrayList;
import java.util.Collection;
import org.hamcrest.core.Every;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
public class SimpleParseSignatureTest extends ParseSignatureTest {

    @Parameters(name = "{0}")
    public static Collection<Object[]> data() {
        ArrayList<Object[]> ret = new ArrayList<>();
        for (NativeSimpleType type : NativeSimpleType.values()) {
            ret.add(new Object[]{type});
        }
        return ret;
    }

    @Parameter public NativeSimpleType type;

    protected NativeSignature parse(String format) {
        return Parser.parseSignature(String.format(format, type, type));
    }

    @Test
    public void testNoArgs() {
        NativeSignature signature = parse("():%s");
        Assert.assertThat("return type", signature.getRetType(), isSimpleType(type));
        Assert.assertEquals("argument count", 0, signature.getArgTypes().size());
    }

    @Test
    public void testOneArg() {
        NativeSignature signature = parse("(%s):void");
        Assert.assertThat("return type", signature.getRetType(), isSimpleType(NativeSimpleType.VOID));
        Assert.assertEquals("argument count", 1, signature.getArgTypes().size());
        Assert.assertThat("argument types", signature.getArgTypes(), Every.everyItem(isSimpleType(type)));
    }

    @Test
    public void testTwoArgs() {
        NativeSignature signature = parse("(%s,%s):void");
        Assert.assertThat("return type", signature.getRetType(), isSimpleType(NativeSimpleType.VOID));
        Assert.assertEquals("argument count", 2, signature.getArgTypes().size());
        Assert.assertThat("argument types", signature.getArgTypes(), Every.everyItem(isSimpleType(type)));
    }

    @Test
    public void testArrayArg() {
        NativeSignature signature = parse("([%s]):void");
        Assert.assertThat("return type", signature.getRetType(), isSimpleType(NativeSimpleType.VOID));
        Assert.assertEquals("argument count", 1, signature.getArgTypes().size());
        Assert.assertThat("argument types", signature.getArgTypes(), Every.everyItem(isArrayType(isSimpleType(type))));
    }

    @Test
    public void testArrayRet() {
        NativeSignature signature = parse("():[%s]");
        Assert.assertEquals("argument count", 0, signature.getArgTypes().size());
        Assert.assertThat("return type", signature.getRetType(), isArrayType(isSimpleType(type)));
    }
}