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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * accompanied this code).
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package org.graalvm.tools.lsp.test.server;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import org.graalvm.tools.lsp.server.types.ExecuteCommandParams;
import org.junit.Test;

public class LSPExtensionTest extends TruffleLSPTest {

    @Test
    public void getExtensionCommandNamesTest() {
        Collection<String> names = truffleAdapter.getExtensionCommandNames();
        assertEquals(names.size(), new LSPExtensionTestInstance().getCommands().size());
        assertTrue(names.contains(LSPExtensionTestInstance.COMMAND_SIMPLE));
        assertTrue(names.contains(LSPExtensionTestInstance.COMMAND_TIMEOUT));
    }

    @Test
    public void simpleCommandTest() {
        List<Object> dummyArguments = createDummyArguments();
        ExecuteCommandParams params = createParameters(LSPExtensionTestInstance.COMMAND_SIMPLE, dummyArguments);
        Future<?> future = truffleAdapter.createExtensionCommand(params);
        try {
            Object result = future.get(2, TimeUnit.SECONDS);
            assertTrue(result instanceof Integer && ((int) result) == dummyArguments.size());
        } catch (InterruptedException | ExecutionException | TimeoutException e) {
            fail("" + e);
        }
    }

    @Test
    public void timeoutCommandTest() {
        List<Object> dummyArguments = createDummyArguments();
        ExecuteCommandParams params = createParameters(LSPExtensionTestInstance.COMMAND_TIMEOUT, dummyArguments);
        Future<?> future = truffleAdapter.createExtensionCommand(params);
        try {
            Object result = future.get(2, TimeUnit.SECONDS);
            assertTrue(result == dummyArguments.get(0));
        } catch (InterruptedException | ExecutionException | TimeoutException e) {
            fail("" + e);
        }
    }

    private static List<Object> createDummyArguments() {
        return Arrays.asList(true, false, 42);
    }

    private static ExecuteCommandParams createParameters(String command, List<Object> arguments) {
        ExecuteCommandParams params = ExecuteCommandParams.create(command);
        params.setArguments(arguments);
        return params;
    }
}