responseassertion.java

测试工具

	}

	public boolean getAssumeSuccess() {
		return getPropertyAsBoolean(ASSUME_SUCCESS, false);
	}

	public void setAssumeSuccess(boolean b) {
		setProperty(ASSUME_SUCCESS, b);
	}

	/**
	 * Make sure the response satisfies the specified assertion requirements.
	 * 
	 * @param response
	 *            an instance of SampleResult
	 * @return an instance of AssertionResult
	 */
	AssertionResult evaluateResponse(SampleResult response) {
		boolean pass = true;
		boolean not = (NOT & getTestType()) > 0;
		AssertionResult result = new AssertionResult(getName());
		String toCheck = ""; // The string to check (Url or data)

		if (getAssumeSuccess()) {
			response.setSuccessful(true);// Allow testing of failure codes
		}

		// What are we testing against?
		if (isTestFieldResponseData()) {
			toCheck = response.getResponseDataAsString(); // (bug25052)
		} else if (isTestFieldResponseCode()) {
			toCheck = response.getResponseCode();
		} else if (isTestFieldResponseMessage()) {
			toCheck = response.getResponseMessage();
		} else if (isTestFieldResponseHeaders()) {
			toCheck = response.getResponseHeaders();
		} else { // Assume it is the URL
			toCheck = response.getSamplerData(); // TODO - is this where the URL is stored?
			if (toCheck == null)
				toCheck = "";
		}

		if (toCheck.length() == 0) {
			return result.setResultForNull();
		}

		result.setFailure(false);
		result.setError(false);

		boolean contains = isContainsType(); // do it once outside loop
		boolean equals = isEqualsType();
		boolean debugEnabled = log.isDebugEnabled();
		if (debugEnabled){
			log.debug("Type:" + (contains?"Contains":"Match") + (not? "(not)": ""));
		}
		
		try {
			// Get the Matcher for this thread
			Perl5Matcher localMatcher = JMeterUtils.getMatcher();
			PropertyIterator iter = getTestStrings().iterator();
			while (iter.hasNext()) {
				String stringPattern = iter.next().getStringValue();
				Pattern pattern = JMeterUtils.getPatternCache().getPattern(stringPattern, Perl5Compiler.READ_ONLY_MASK);
				boolean found;
				if (contains) {
					found = localMatcher.contains(toCheck, pattern);
                } else if (equals) {
                    found = toCheck.equals(stringPattern);
				} else {
					found = localMatcher.matches(toCheck, pattern);
				}
				pass = not ? !found : found;
				if (!pass) {
					if (debugEnabled){log.debug("Failed: "+pattern);}
					result.setFailure(true);
					result.setFailureMessage(getFailText(stringPattern,toCheck));
					break;
				}
				if (debugEnabled){log.debug("Passed: "+pattern);}
			}
		} catch (MalformedCachePatternException e) {
			result.setError(true);
			result.setFailure(false);
			result.setFailureMessage("Bad test configuration " + e);
		}
		return result;
	}

	/**
	 * Generate the failure reason from the TestType
	 * 
	 * @param stringPattern
	 * @return the message for the assertion report 
	 */
	// TODO strings should be resources (but currently must not contain commas or the CSV file will be broken)
	private String getFailText(String stringPattern, String toCheck) {
		
		StringBuffer sb = new StringBuffer(200);
		sb.append("Test failed: ");

		if (isTestFieldResponseData()) {
			sb.append("text");
		} else if (isTestFieldResponseCode()) {
			sb.append("code");
		} else if (isTestFieldResponseMessage()) {
			sb.append("message");
		} else if (isTestFieldResponseHeaders()) {
			sb.append("headers");
		} else // Assume it is the URL
		{
			sb.append("URL");
		}

		switch (getTestType()) {
		case CONTAINS:
			sb.append(" expected to contain ");
			break;
		case NOT | CONTAINS:
			sb.append(" expected not to contain ");
			break;
		case MATCH:
			sb.append(" expected to match ");
			break;
		case NOT | MATCH:
			sb.append(" expected not to match ");
			break;
		case EQUALS:
			sb.append(" expected to equal ");
			break;
		case NOT | EQUALS:
			sb.append(" expected not to equal ");
			break;
		default:// should never happen...
			sb.append(" expected something using ");
		}

		sb.append("/");
		
		if (isEqualsType()){
			sb.append(equalsComparisonText(toCheck, stringPattern));
		} else {
			sb.append(stringPattern);
		}
		
		sb.append("/");
		
		return sb.toString();
	}


    private static String trunc(final boolean right, final String str)
    {
        if (str.length() <= EQUALS_SECTION_DIFF_LEN)
            return str;
        else if (right)
            return str.substring(0, EQUALS_SECTION_DIFF_LEN) + EQUALS_DIFF_TRUNC;
        else
            return EQUALS_DIFF_TRUNC + str.substring(str.length() - EQUALS_SECTION_DIFF_LEN, str.length());
    }

    /**
     *   Returns some helpful logging text to determine where equality between two strings
     * is broken, with one pointer working from the front of the strings and another working
     * backwards from the end.
     *
     * @param received      String received from sampler.
     * @param comparison    String specified for "equals" response assertion.
     * @return  Two lines of text separated by newlines, and then forward and backward pointers
     *      denoting first position of difference.
     */
    private static StringBuffer equalsComparisonText(final String received, final String comparison)
    {
        final StringBuffer      text;
        int                     firstDiff;
        int                     lastRecDiff = -1;
        int                     lastCompDiff = -1;
        final int               recLength = received.length();
        final int               compLength = comparison.length();
        final int               minLength = Math.min(recLength, compLength);
        final String            startingEqSeq;
        String                  recDeltaSeq = "";
        String                  compDeltaSeq = "";
        String                  endingEqSeq = "";
        final StringBuffer      pad;


        text = new StringBuffer(Math.max(recLength, compLength) * 2);
        for (firstDiff = 0; firstDiff < minLength; firstDiff++)
            if (received.charAt(firstDiff) != comparison.charAt(firstDiff))
                break;
        if (firstDiff == 0)
            startingEqSeq = "";
        else
            startingEqSeq = trunc(false, received.substring(0, firstDiff));

        lastRecDiff = recLength - 1;
        lastCompDiff = compLength - 1;

        while ((lastRecDiff > firstDiff) && (lastCompDiff > firstDiff)
                && received.charAt(lastRecDiff) == comparison.charAt(lastCompDiff))
        {
            lastRecDiff--;
            lastCompDiff--;
        }
        endingEqSeq = trunc(true, received.substring(lastRecDiff + 1, recLength));
        if (endingEqSeq.length() == 0)
        {
            recDeltaSeq = trunc(true, received.substring(firstDiff, recLength));
            compDeltaSeq = trunc(true, comparison.substring(firstDiff, compLength));
        }
        else
        {
            recDeltaSeq = trunc(true, received.substring(firstDiff, lastRecDiff + 1));
            compDeltaSeq = trunc(true, comparison.substring(firstDiff, lastCompDiff + 1));
        }
        pad = new StringBuffer(Math.abs(recDeltaSeq.length() - compDeltaSeq.length()));
        for (int i = 0; i < pad.capacity(); i++)
            pad.append(' ');
        if (recDeltaSeq.length() > compDeltaSeq.length())
            compDeltaSeq += pad.toString();
        else
            recDeltaSeq += pad.toString();

        text.append("\n\n");
        text.append(RECEIVED_STR);
        text.append(startingEqSeq);
        text.append(DIFF_DELTA_START);
        text.append(recDeltaSeq);
        text.append(DIFF_DELTA_END);
        text.append(endingEqSeq);
        text.append("\n\n");
        text.append(COMPARISON_STR);
        text.append(startingEqSeq);
        text.append(DIFF_DELTA_START);
        text.append(compDeltaSeq);
        text.append(DIFF_DELTA_END);
        text.append(endingEqSeq);
        text.append("\n\n");
        return text;
    }

}