jmeter之断言

jmeter之断言

18.5.5 BeanShell Assertion

The BeanShell Assertion allows the user to perform assertion checking using a BeanShell script. For full details on using BeanShell, please see the BeanShell website. Note that a different Interpreter is used for each independent occurence of the assertion in each thread in a test script, but the same Interpreter is used for subsequent invocations. This means that variables persist across calls to the assertion. All Assertions are called from the same thread as the sampler. If the property "beanshell.assertion.init" is defined, it is passed to the Interpreter as the name of a sourced file. This can be used to define common methods and variables. There is a sample init file in the bin directory: BeanShellAssertion.bshrc The test element supports the ThreadListener and TestListener methods. These should be defined in the initialisation file. See the file BeanShellListeners.bshrc for example definitions. Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. The name is stored in the script variable Label No Reset bsh.Interpreter before each call If this option is selected, then the interpreter will be recreated for each sample. This may be necessary for some long running scripts. For further information, see Best Practices - BeanShell scripting . Yes Parameters Parameters to pass to the BeanShell script. The parameters are stored in the following variables: Parameters - string containing the parameters as a single variable bsh.args - String array containing parameters, split on white-space No Script file A file containing the BeanShell script to run. This overrides the script. The file name is stored in the script variable FileName No Script The BeanShell script to run. The return value is ignored. Yes (unless script file is provided)   There's a sample script you can try. Before invoking the script, some variables are set up in the BeanShell interpreter. These are strings unless otherwise noted: log - the Logger Object. (e.g.) log.warn("Message"[,Throwable]) SampleResult - the SampleResult Object; read-write Response - the response Object; read-write Failure - boolean; read-write; used to set the Assertion status FailureMessage - String; read-write; used to set the Assertion message ResponseData - the response body (byte []) ResponseCode - e.g. 200 ResponseMessage - e.g. OK ResponseHeaders - contains the HTTP headers RequestHeaders - contains the HTTP headers sent to the server SampleLabel SamplerData - data that was sent to the server ctx - JMeterContext vars - JMeterVariables - e.g. vars.get("VAR1"); vars.put("VAR2","value"); vars.putObject("OBJ1",new Object()); props - JMeterProperties (class java.util.Properties) - e.g. props.get("START.HMS"); props.put("PROP1","1234");   The following methods of the Response object may be useful: setStopThread(boolean) setStopTest(boolean) String getSampleLabel() setSampleLabel(String)

18.5.10 BSF Assertion

The BSF Assertion allows BSF script code to be used to check the status of the previous sample. Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No Language The BSF language to be used Yes Parameters Parameters to pass to the script. The parameters are stored in the following variables: Parameters - string containing the parameters as a single variable args - String array containing parameters, split on white-space No Script file A file containing the script to run, if a relative file path is used, then it will be relative to directory referenced by "user.dir" System property No Script The script to run. Yes (unless script file is provided)   The script (or file) is processed using the BSFEngine.exec() method, which does not return a value. The following variables are set up for use by the script: log - (Logger) - can be used to write to the log file Label - the String Label Filename - the script file name (if any) Parameters - the parameters (as a String) args[] - the parameters as a String array (split on whitespace) ctx - ( JMeterContext ) - gives access to the context vars - ( JMeterVariables ) - gives read/write access to variables: vars.get(key); vars.put(key,val); vars.putObject("OBJ1",new Object()); vars.getObject("OBJ2"); props - (JMeterProperties - class java.util.Properties) - e.g. props.get("START.HMS"); props.put("PROP1","1234"); SampleResult, prev - ( SampleResult ) - gives access to the previous SampleResult (if any) sampler - (Sampler)- gives access to the current sampler OUT - System.out - e.g. OUT.println("message") AssertionResult - the assertion result The script can check various aspects of the SampleResult . If an error is detected, the script should use AssertionResult.setFailureMessage("message") and AssertionResult.setFailure(true). For futher details of all the methods available on each of the above variables, please check the Javadoc

 

 

8.5.12 Compare Assertion

Compare Assertion MUST NOT BE USED during load test as it consumes a lot of resources (memory and CPU). Use it only for either functional testing or during Test Plan debugging and Validation.   The Compare Assertion can be used to compare sample results within its scope. Either the contents or the elapsed time can be compared, and the contents can be filtered before comparison. The assertion comparisons can be seen in the Comparison Assertion Visualizer . Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No Compare Content Whether or not to compare the content (response data) Yes Compare Time If the value is >=0, then check if the response time difference is no greater than the value. I.e. if the value is 0, then the response times must be exactly equal. Yes Comparison Filters Filters can be used to remove strings from the content comparison. For example, if the page has a time-stamp, it might be matched with: "Time: \d\d:\d\d:\d\d" and replaced with a dummy fixed time "Time: HH:MM:SS". No

 

 

 

8.5.7 HTML Assertion

The HTML Assertion allows the user to check the HTML syntax of the response data using JTidy. Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No doctype omit/auto/strict/loose Yes Format HTML, XHTML or XML Yes Errors only Only take note of errors? Yes Error threshold Number of errors allowed before classing the response as failed Yes Warning threshold Number of warnings allowed before classing the response as failed Yes Filename Name of file to which report is written No

18.5.6 MD5Hex Assertion

The MD5Hex Assertion allows the user to check the MD5 hash of the response data.

Control Panel

Parameters

Attribute	Description	Required
Name	Descriptive name for this element that is shown in the tree.	No
MD5 sum	32 hex digits representing the MD5 hash (case not significant)	Yes

 

 

 

18.5.3 Size Assertion

The Size Assertion tests that each response contains the right number of bytes in it. You can specify that the size be equal to, greater than, less than, or not equal to a given number of bytes.   Since JMeter 2.3RC3, an empty response is treated as being 0 bytes rather than reported as an error.   Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No Apply to: This is for use with samplers that can generate sub-samples, e.g. HTTP Sampler with embedded resources, Mail Reader or samples generated by the Transaction Controller. Main sample only - assertion only applies to the main sample Sub-samples only - assertion only applies to the sub-samples Main sample and sub-samples - assertion applies to both. JMeter Variable - assertion is to be applied to the contents of the named variable Yes Size in bytes The number of bytes to use in testing the size of the response (or value of the JMeter variable). Yes Type of Comparison Whether to test that the response is equal to, greater than, less than, or not equal to, the number of bytes specified. Yes

 

 

 

18.5.13 SMIME Assertion

The SMIME Assertion can be used to evaluate the sample results from the Mail Reader Sampler. This assertion verifies if the body of a mime message is signed or not. The signature can also be verified against a specific signer certificate. As this is a functionality that is not necessarily needed by most users, additional jars need to be downloaded and added to JMETER_HOME/lib :  bcmail-xxx.jar (BouncyCastle SMIME/CMS) bcprov-xxx.jar (BouncyCastle Provider) These need to be downloaded from BouncyCastle. If using the Mail Reader Sampler , please ensure that you select "Store the message using MIME (raw)" otherwise the Assertion won't be able to process the message correctly. Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No Verify Signature If selected, the asertion will verify if it is a valid signature according to the parameters defined in the Signer Certificate box. Yes Message not signed Whether or not to expect a signature in the message Yes Signer Cerificate "No Check" means that it wil not perform signature verification. "Check values" is used to verify the signature against the inputs provided. And "Certificate file" will perform the verification against a specific certificate file. Yes Message Position The Mail sampler can retrieve multiple messages in a single sample. Use this field to specify which message will be checked. Messages are numbered from 0, so 0 means the first message. Negative numbers count from the LAST message; -1 means LAST, -2 means penultimate etc. Yes

 

18.5.9 XML Schema Assertion

The XML Schema Assertion allows the user to validate a response against an XML Schema. Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No File Name Specify XML Schema File Name Yes

 

 

18.5.4 XML Assertion

The XML Assertion tests that the response data consists of a formally correct XML document. It does not validate the XML based on a DTD or schema or do any further validation. Control Panel Parameters ¶ Attribute Description Required Name Descriptive name for this element that is shown in the tree. No

 

 

18.5.8 XPath Assertion

The XPath Assertion tests a document for well formedness, has the option of validating against a DTD, or putting the document through JTidy and testing for an XPath. If that XPath exists, the Assertion is true. Using "/" will match any well-formed document, and is the default XPath Expression. The assertion also supports boolean expressions, such as "count(//*error)=2". See http://www.w3.org/TR/xpath for more information on XPath. Some sample expressions: //title[text()='Text to match'] - matches <text>Text to match</text> anywhere in the response /title[text()='Text to match'] - matches <text>Text to match</text> at root level in the response Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No Use Tidy (tolerant parser) Use Tidy, i.e. be tolerant of XML/HTML errors Yes Quiet Sets the Tidy Quiet flag If Tidy is selected Report Errors If a Tidy error occurs, then set the Assertion accordingly If Tidy is selected Show warnings Sets the Tidy showWarnings option If Tidy is selected Use Namespaces Should namespaces be honoured? If Tidy is not selected Validate XML Check the document against its schema. If Tidy is not selected Ignore Whitespace Ignore Element Whitespace. If Tidy is not selected Fetch External DTDs If selected, external DTDs are fetched. If Tidy is not selected XPath Assertion XPath to match in the document. Yes True if nothing matches True if a XPath expression is not matched No     The non-tolerant parser can be quite slow, as it may need to download the DTD etc.     As a work-round for namespace limitations of the Xalan XPath parser implementation on which JMeter is based, you can provide a Properties file which contains mappings for the namespace prefixes: prefix1=Full Namespace 1 prefix2=Full Namespace 2 ... You reference this file in jmeter.properties file using the property: xpath.namespace.config

18.5.1 Response Assertion

The response assertion control panel lets you add pattern strings to be compared against various fields of the response. The pattern strings are: Contains, Matches: Perl5-style regular expressions Equals, Substring: plain text, case-sensitive   A summary of the pattern matching characters can be found at ORO Perl5 regular expressions. You can also choose whether the strings will be expected to match the entire response, or if the response is only expected to contain the pattern. You can attach multiple assertions to any controller for additional flexibility. Note that the pattern string should not include the enclosing delimiters, i.e. use Price: \d+ not /Price: \d+/ . By default, the pattern is in multi-line mode, which means that the "." meta-character does not match newline. In multi-line mode, "^" and "$" match the start or end of any line anywhere within the string - not just the start and end of the entire string. Note that \s does match new-line. Case is also significant. To override these settings, one can use the extended regular expression syntax. For example:     (?i) - ignore case     (?s) - treat target as single line, i.e. "." matches new-line     (?is) - both the above     These can be used anywhere within the expression and remain in effect until overriden.  e.g.     (?i)apple(?-i) Pie - matches "ApPLe Pie", but not "ApPLe pIe"     (?s)Apple.+?Pie - matches Apple followed by Pie, which may be on a subsequent line.     Apple(?s).+?Pie - same as above, but it's probably clearer to use the (?s) at the start.    Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No Apply to: This is for use with samplers that can generate sub-samples, e.g. HTTP Sampler with embedded resources, Mail Reader or samples generated by the Transaction Controller. Main sample only - assertion only applies to the main sample Sub-samples only - assertion only applies to the sub-samples Main sample and sub-samples - assertion applies to both. JMeter Variable - assertion is to be applied to the contents of the named variable Yes Response Field to Test Instructs JMeter which field of the Response to test. Text Response - the response text from the server, i.e. the body, excluding any HTTP headers. Document (text) - the extract text from various type of documents via Apache Tika (see View Results Tree Document view section). URL sampled Response Code - e.g. 200 Response Message - e.g. OK Response Headers, including Set-Cookie headers (if any) Yes Ignore status Instructs JMeter to set the status to success initially. The overall success of the sample is determined by combining the result of the assertion with the existing Response status. When the Ignore Status checkbox is selected, the Response status is forced to successful before evaluating the Assertion. HTTP Responses with statuses in the 4xx and 5xx ranges are normally regarded as unsuccessful. The "Ignore status" checkbox can be used to set the status successful before performing further checks. Note that this will have the effect of clearing any previous assertion failures, so make sure that this is only set on the first assertion. Yes Pattern Matching Rules Indicates how the text being tested is checked against the pattern. Contains - true if the text contains the regular expression pattern Matches - true if the whole text matches the regular expression pattern Equals - true if the whole text equals the pattern string (case-sensitive) Substring - true if the text contains the pattern string (case-sensitive) Equals and Substring patterns are plain strings, not regular expressions. NOT may also be selected to invert the result of the check. Yes Patterns to Test A list of patterns to be tested. Each pattern is tested separately. If a pattern fails, then further patterns are not checked. There is no difference between setting up one Assertion with multiple patterns and setting up multiple Assertions with one pattern each (assuming the other options are the same). However, when the Ignore Status checkbox is selected, this has the effect of cancelling any previous assertion failures - so make sure that the Ignore Status checkbox is only used on the first Assertion. Yes   The pattern is a Perl5-style regular expression, but without the enclosing brackets. Assertion Examples   Figure 14 - Test Plan     Figure 15 - Assertion Control Panel with Pattern     Figure 16 - Assertion Listener Results (Pass)     Figure 17 - Assertion Listener Results (Fail)

18.5.2 Duration Assertion

The Duration Assertion tests that each response was received within a given amount of time. Any response that takes longer than the given number of milliseconds (specified by the user) is marked as a failed response. Control Panel Parameters Attribute Description Required Name Descriptive name for this element that is shown in the tree. No Duration in Milliseconds The maximum number of milliseconds each response is allowed before being marked as failed. Yes

 

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