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An open library used to connect to the ecFeed service. It can be also used as a standalone testing tool. It is integrated with Junit5 and generates a stream of test cases using a selected algorithm (e.g. Cartesian, N-Wise). There are no limitations associated with the off-line version but the user cannot access the on-line computation servers and the model database.

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package com.ecfeed.junit.main;

import com.ecfeed.junit.utils.Localization;
import joptsimple.OptionSet;

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Optional;

import static com.ecfeed.junit.main.CommandLineConstants.*;

public final class InputProcessor {

    static Optional extractFileInputPath(OptionSet options) {
        Optional pathProvided = checkRedundantArguments(options, FILE_INPUT_LONG, FILE_INPUT_SHORT);
        return pathProvided.isPresent() ? validateFileInput(pathProvided.get()) : Optional.empty();
    }

    static private Optional checkRedundantArguments(OptionSet options, String nameLong, String nameShort) {
        Object parameter = null;

        if (options.hasArgument(nameLong)) {
            parameter = options.valueOf(nameLong);
        }

        if (options.hasArgument(nameShort)) {

            if (parameter != null) {
                throw new IllegalArgumentException(Localization.bundle.getString("inputProcessorDuplicateArguments")
                        + nameLong + "', '" + nameShort + "'");
            }

            parameter = options.valueOf(nameShort);
        }

        return parameter == null ? Optional.empty() : Optional.of(parameter.toString());
    }

    static private Optional validateFileInput(String pathProvided) {
        Path path = Paths.get(pathProvided);

        if (!Files.exists(path)) {
            throw new NullPointerException(Localization.bundle.getString("inputProcessorMissingFile") + path);
        }

        if (!Files.isRegularFile(path)) {
            throw new IllegalArgumentException(Localization.bundle.getString("inputProcessorDirectory") + path);
        }

        if (!Files.isReadable(path)) {
            throw new IllegalArgumentException(Localization.bundle.getString("inputProcessorNotReadable") + path);
        }

        return Optional.ofNullable(path);
    }

    static Optional extractUserData(OptionSet options) {
        return checkRedundantArguments(options, USER_INPUT_LONG, USER_INPUT_SHORT);
    }

    static boolean extractVerbose(OptionSet options) {
        if (options.has(VERBOSE_LONG) || options.has(VERBOSE_SHORT)) {
            return true;
        }

        return false;
    }

}