com.thoughtworks.twist.migration.brt.BRTMigrator.java Source code

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Here is the source code for com.thoughtworks.twist.migration.brt.BRTMigrator.java

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/*************************GO-LICENSE-START*********************************
 * Copyright 2015 ThoughtWorks, Inc.
 *
 * Licensed 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.
 *************************GO-LICENSE-END***********************************/

package com.thoughtworks.twist.migration.brt;

import org.apache.commons.lang.WordUtils;
import org.junit.Assert;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;

public class BRTMigrator {

    public void assertValue(String expected, String columnName, Object obj) throws NoSuchMethodException,
            InvocationTargetException, IllegalAccessException, ClassNotFoundException {
        Class cls = Class.forName(obj.getClass().getName());
        String methodName = camelCase(columnName.substring(0, columnName.length() - 1));
        Method meth = cls.getMethod(methodName);
        Object returnValue = meth.invoke(obj);
        Assert.assertTrue(expected.equals(returnValue));
    }

    public void invokeSetter(String rowValue, String columnName, Object obj) throws NoSuchMethodException,
            InvocationTargetException, IllegalAccessException, ClassNotFoundException {
        Class cls = Class.forName(obj.getClass().getName());
        Class paramType[] = new Class[] { String.class };

        String methodName = "set" + WordUtils.capitalize(camelCase(columnName));
        Method meth = cls.getMethod(methodName, paramType);
        Object args[] = new Object[] { rowValue };
        meth.invoke(obj, args);
    }

    public void BRTExecutor(com.thoughtworks.gauge.Table table, Object obj) throws ClassNotFoundException,
            InvocationTargetException, IllegalAccessException, NoSuchMethodException {
        List<String> columnNames = table.getColumnNames();
        List<List<String>> allRows = table.getRows();

        for (List<String> row : allRows) {
            invokeHook(obj, "setUp");
            for (int i = 0; i < row.size(); i++) {
                String col = columnNames.get(i);
                if (col.endsWith("?")) {
                    assertValue(row.get(i), col, obj);
                } else {
                    invokeSetter(row.get(i), col, obj);
                }
            }
            invokeHook(obj, "tearDown");
        }
    }

    private void invokeHook(Object obj, String name)
            throws ClassNotFoundException, InvocationTargetException, IllegalAccessException {
        Class cls = Class.forName(obj.getClass().getName());
        Method meth = null;
        try {
            meth = cls.getMethod(name);
        } catch (NoSuchMethodException e) {
            return;
        }
        Object args[] = new Object[0];
        meth.invoke(obj, args);
    }

    private String camelCase(String text) {
        String[] splits = text.split(" ");
        StringBuilder sb = new StringBuilder();
        char[] chars = splits[0].toCharArray();
        chars[0] = Character.toLowerCase(chars[0]);
        sb.append(String.valueOf(chars));
        for (int i = 1; i < splits.length; i++)
            sb.append(WordUtils.capitalize(splits[i]));
        return sb.toString();
    }

}