JUnit測試此特定方法

Question

我正在嘗試為Java方法編寫一些JUnit測試，該方法采用基本URL和目標URL，並返回相對於給定基本URL的目標URL。

我正在使用基於類別的分區來制作我的測試集。 目前我正在測試檢查以下內容：

• 檢查兩個輸入URL是否具有相同的協議和主機;
• 檢查路徑不相同的時間以及相對URL是否正確調整;
• 檢查基本URL何時長於目標URL;
• 檢查目標URL何時長於基本URL;
• 檢查基本URL和目標URL何時相同;

我想知道其他人如何使用JUnit測試這個方法？ 我錯過了任何標准嗎？

 /**
 * This method converts an absolute url to an url relative to a given base-url.
 * The algorithm is somewhat chaotic, but it works (Maybe rewrite it). 
 * Be careful, the method is ".mm"-specific. Something like this should be included
 * in the librarys, but I couldn't find it. You can create a new absolute url with
 * "new URL(URL context, URL relative)".
 */
public static String toRelativeURL(URL base, URL target) {
        // Precondition: If URL is a path to folder, then it must end with '/' character. 
    if( (base.getProtocol().equals(target.getProtocol())) &&
        (base.getHost().equals(target.getHost()))) {

        String baseString = base.getFile();
        String targetString = target.getFile();
        String result = "";

        //remove filename from URL
        baseString = baseString.substring(0, baseString.lastIndexOf("/")+1);

        //remove filename from URL
        targetString = targetString.substring(0, targetString.lastIndexOf("/")+1);

        StringTokenizer baseTokens = new StringTokenizer(baseString,"/");//Maybe this causes problems under windows
        StringTokenizer targetTokens = new StringTokenizer(targetString,"/");//Maybe this causes problems under windows
        String nextBaseToken = "", nextTargetToken = "";

        //Algorithm

        while(baseTokens.hasMoreTokens() && targetTokens.hasMoreTokens()) {
        nextBaseToken = baseTokens.nextToken();
        nextTargetToken = targetTokens.nextToken();
        System.out.println("while1");
        if (!(nextBaseToken.equals(nextTargetToken))) {
            System.out.println("if1");
            while(true) {
            result = result.concat("../");
            System.out.println(result);
            if (!baseTokens.hasMoreTokens()) {
                System.out.println("break1");
                break;
            }
            System.out.println("break2");
            nextBaseToken = baseTokens.nextToken();
            }
            while(true) {
            result = result.concat(nextTargetToken+"/");
            System.out.println(result);
            if (!targetTokens.hasMoreTokens()) {
                System.out.println("break3");
                break;
            }
            System.out.println("break4");
            nextTargetToken = targetTokens.nextToken();
            }
            String temp = target.getFile();
            result = result.concat(temp.substring(temp.lastIndexOf("/")+1,temp.length()));
            System.out.println("1");
            return result;
        }
        }

        while(baseTokens.hasMoreTokens()) {
        result = result.concat("../");
        baseTokens.nextToken();
        }

        while(targetTokens.hasMoreTokens()) {
        nextTargetToken = targetTokens.nextToken();
        result = result.concat(nextTargetToken + "/");
        }

        String temp = target.getFile();
        result = result.concat(temp.substring(temp.lastIndexOf("/")+1,temp.length()));
        System.out.println("2");
        return result;
    }
    System.out.println("3");
    return target.toString();
    }
}

Answer 1

只是一些想法......

1. 您可能想要測試您的URL輸入中的任何一個（或兩個）是否為空。 :)
2. 如果目標URL具有參數（例如： http://host/app/bla?param1=value&param2=value ），生成的相對URL是否包含參數？
3. 如果目標URL只是http://host ，它會導致targetString.lastIndexOf("/")上的IndexOutOfBoundException ...這同樣適用於基本URL。