Each functionality of the software must have a separate feature file. Karate is built on top of Cucumber, another BDD testing framework, and shares some of the same concepts. 82 lines (69 sloc) 3.06 KB. The name of the class doesnt matter, and it will automatically run any *. If you are looking for Cucumber hooks Karate does not support them, mainly because they depend on Java code, which goes against the Karate Way. """, Then match each response contains deep { a, # should be an array of strings with size 2, # each array element should have a 'length' property with value 3, # should be an array of strings each of length 3, """ GET Method: Step 1: Create a feature file under src/test/java folder. """, """ isValidTime(_)' Add the plugin to the / section of your pom.xml if not already present: If you want to use JUnit 4, use the karate-junit4 Maven dependency instead of karate-junit5. } Only one JSON argument is allowed, but this does not limit you in any way as you can use any complex JSON structure. The Runner.Builder API has a dryRun() method to switch this on. But if you really need to use the HTTP response code in an expression or save it for later, you can get it as an integer: Note that match can give you some extra readable options: The response time (in milliseconds) for the current response would be available in a variable called responseTime. Karates capabilities include being able to run tests in parallel, HTML reports and compatibility with Continuous Integration tools. But use wisely, because called scripts will now over-write variables that may have been already defined. Requirement: Open a feature file in VSCode Editor and ensure editor has focus. JSON objects become Java Map-s, JSON arrays become Java List-s, and Java Bean properties are accessible (and update-able) using dot notation e.g. } { Format of the trustStore file. Karate is flexible, you can easily over-write config variables within the Java or JUnit runner - which is very convenient when in dev-mode or rapid-prototyping. response is a built-in variable in karate that stores HTTP API response. # the step that immediately follows the above would typically be: * def putOrPost = (someVariable == 'dev' ? Multiple fields can be set in one step using multipart fields. Speciality. The classpath is a Java concept and is where some configuration files such as the one for logging are expected to be by default. Note that it is a map of lists so you will need to do things like this: And just as in the responseCookies example above, you can use match to run complex validations on the responseHeaders. For convenience, a null value will be ignored. Create util.DbUtils java class and add the following java code snippet. And if you do this within a Background: section, it would apply to all Scenario: sections within the *.feature file. When expressing expected results (in JSON or XML) you can mark some fields to be ignored when the match (comparison) is performed. The JS API has a karate.signal(result) method that is useful for involving asynchronous flows into a test. A callonce is ideally used for only pure JSON. An image comparison UI will also be embedded into the Karate HTML report with detailed information about any differences between the two images. The solution is to ensure that when Karate tests run, the JVM file.encoding is set to UTF-8. From a file in the same package. For an example, refer: upload-multiple-files.feature. Conditionally making a test fail is easy with karate.fail(). Here below is an example that also demonstrates using the multipart/related content-type. To run only a single scenario, append the line number on which the scenario is defined, de-limited by :. mvn test -Dkarate.options="classpath:myfeature.feature --name ^first$" And if you use IntelliJ - you can right click and do the above. Calling any Java code is that easy. You can also sort arrays of arbitrary JSON using karate.sort(). physics multipart file uploads can be tricky, and hard to get right. *.js, *.json, *.txt) as well and it is much more convenient to see the *.java and *.feature files and all related artifacts in the same place. But there are cases where you need to take custom actions like saving a response to a file, file reading or writing, etc. And Karate gives you control over these aspects with the small set of keywords focused on HTTP such as url, path, param, etc. And karate.appendTo() is for updating an existing variable (the equivalent of array.push() in JavaScript), which is especially useful in the body of a karate.forEach(). id: 1 """, # * match cat == { name: '#ignore', type: '#regex . You may face issues if you attempt to mix in JS functions or Java code. It is important to note that myFile above is the field name within the multipart/form-data request payload. return 'this text will be displayed to the user when they click the rebase button' This should make it clear why Karate does not provide out of the box support for any particular HTTP authentication scheme. You can even initialize the JSON in a separate step and pass it by name, especially if it is complex. Since replace auto-converts the result to a string, make sure you perform type conversion back to JSON (or XML) if applicable. It validates the entire payload in one step and checks if the kittens array contains all the expected items but in any order. 11 Is it easy to create a karate framework? Imperialism is the state policy, practice, or advocacy of extending power and dominion, especially by direct territorial acquisition or by gaining political and economic control of other areas, often through employing hard power (economic and military power), but also soft power (cultural and diplomatic power).While related to the concepts of colonialism and empire, imperialism is a distinct . Teams typically define complicated JSON (or XML) payloads in a file and then re-use this in multiple scripts. : * param myparam = 'value' or url: * url 'http://example.com/v1?myparam'. Add Gradle Cucumber Task to build.gradle. Thanks for contributing an answer to Stack Overflow! You have to repeat the Examples section for each tag. Dont forget that Karates data-driven testing capabilities can loop over arrays of JSON objects automatically. How to run a specific feature file in karate? - Technical-QA.com Mocks writing. The above code reads a template which is in location com/example/templates/idm/idm-create-user-template.json and stores it as a JSON variable called myReq Then we can send the JSON variable to the other feature file using the call method. This enables more concise tests, and the file can be re-usable in multiple, data-driven tests. And if being called in a loop, a built-in variable called __loop will also be available that will hold the value of the current loop index. This does require you to move set-up into a separate *.feature (or JavaScript) file. sportName: '#string', In some rare cases, for e.g. In rare cases you may want to suppress the default of Scenario-s executing in parallel and the special tag @parallel=false can be used. So how can you get this value injected into the Karate configuration ? Note that Content-Type had to be enclosed in quotes in the JSON above because the - (hyphen character) would cause problems otherwise. You end up with a decent approximation of BDD even though web-services by nature are headless, without a UI, and not really human-friendly. [{ sorts the list using the provided custom function called for each item in the list (and the optional second argument is the item index) e.g. This turns out to be very useful in practice, and this particular match jsonArray contains '#(^partialObject)' form has no in-line equivalent (see the third-from-last row above). For JSON, you can also use the JS delete operator via eval, useful when the path you are trying to mutate is dynamic. Since match and set go well together, they are both introduced in the examples in the section below. """, # karate's unified data handling means that even 'match' works, # which means that checking if a cookie does NOT exist is a piece of cake, # check if the response status is either of two values, # this may be sufficient to check a range of values. The keywords def, set, match, request and eval take multi-line input as the last argument. With this, we will execute our test cases in parallel format. The value column can take expressions, even XML chunks. The response is automatically available as a JSON, XML or String object depending on what the response contents are. They seamlessly fit in-line within your test script. And such re-use makes it easier to re-factor tests when needed, which is great for maintainability. Since these are tests and not production Java code, you dont need to be bound by the com.mycompany.foo.bar convention and the un-necessary explosion of sub-folders that ensues. rev2023.3.3.43278. Run Karate Test. Url encoding is required to differentiate between special characters in your data vs special characters that are reserved to construct the URL. Note how triple-quotes (""") are used to enclose content. JavaScript Functions are also native. Though not really recommended, you can have multiple Scenario-s within a Feature tagged with @setup. "c": 5 Use it sparingly, and only for string, number or simple payload comparisons. A few more useful transforms are to select a sub-set of key-value pairs using karate.filterKeys(), merging 2 or more JSON-s using karate.merge() and combining 2 or more arrays (or objects) into a single array using karate.append(). One pattern you can adopt is to create a factory method that returns a Java function - where you can easily delegate to the logic you want. This is very close to how custom keywords work in other frameworks. Assuming you use JUnit, there are some good reasons for the recommended (best practice) naming convention and choice of file-placement shown above: For details on what actually goes into a script or *.feature file, refer to the syntax guide. // so now the txid_header would be a unique uuid for each request, // hard coded here, but also can be as dynamic as you want, // use the 'karate' helper to do a 'safe' get of a 'dynamic' variable, // the 'appId' variable here is expected to have been set via karate-config.js (bootstrap init) and will never change, # second HTTP call, to get a list of 'projects', # if foo is not defined, it will default to 42. For advanced users, Karate supports being able to query for tags within a test, and even tags in a @name=value form. How to use Karate-config parameters in a feature file? The get keyword allows you to save the results of a JsonPath expression for later use - which is especially useful for dynamic data-driven testing. And as shown in the example below, having text in-line is useful especially when you use the Scenario Outline: and Examples: for data-driven tests involving Cucumber-style place-holder substitutions in strings. Use the comma-delimited form (see above) or the JS helper (see below). There may be cases where you want to suppress this to make the reports lighter and easier to read. Here is the above example re-written to do so: The result of karate.setup() will be a JSON of all the variables created within the Scenario tagged with @setup. You can even use a regular-expression so that instead of checking for equality, Karate will just validate that the actual value conforms to the expected pattern. And steps that follow should logically be in the Then form. You can then skip the next few sections, as the pom.xml, recommended directory structure, sample test and JUnit 5 runners - will be created for you. The name of the SOAP action specified is used as the SOAPAction header. One nice thing about the design of the Gherkin syntax is that script-steps are treated the same no matter whether they start with the keyword Given, And, When or Then. To force a null value, wrap it in parentheses: An alternate way to create data is using the set multiple syntax. Do note that if you choose the Java API, you will naturally lose some of the test-automation framework benefits such as HTML reports, parallel execution and JavaScript / configuration. You simply roll your own. JSON arrays), see. We can execute the scenarios in the feature file using maven (which is useful to run the tests in a CI environment) import com. In this video, I have explained how to run feature files using karate junit5 runner and from maven command line.Schedule a meeting in case of any queries/gui. Note that if you need to do a lot of case-insensitive string checks, karate.lowerCase() is what you are looking for. Behavior Driven Development (BDD) is an approach to development and testing, when special attention is paid to product behavior in business terms. JavaScript functions have some limitations when combined with multi-threaded Java code. request can have the 'Authorization' header set in a way that the server expects. For advanced examples, refer to some of the scenarios within this demo: dynamic-params.feature. Let's write a scenario test using the Karate Framework - GitHub Pages any valid JavaScript expression, and variables can be mixed in, another example: equivalent to the above, JavaScript function invocation, Pretty print the request payload JSON or XML with indenting (default, Pretty print the response payload JSON or XML with indenting (default. Can be expressions that will be evaluated. [ # using a static method - observe how java interop is truly seamless ! Valid options are, The number of bits used to encode each pixel, The maximum size on the smallest dimension before downsampling. Karate can read *.csv files and will auto-convert them to JSON. You can use callonce instead of call within the Background in case you have multiple Scenario sections or Examples. For those who use Gradle, this sample build.gradle provides a gatlingRun task that executes the Gatling test of the karate-netty project . Step 3: Add steps to run a sample GET API request. Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? Here is an example of how to get the current date, and formatted the way you want: And the above will result in something like this being logged: [print] 2017/10/16. And if you need multiple functions, you can easily organize them into a single Java class with multiple static methods. Here is an example of using a CSV file as the request-body: Karate provides a flexible way to compare two images to determine if they are the same or similar. #10, #15: There must be a structure expected as a response of the API. It may be easier for you to use the Karate Maven archetype to create a skeleton project with one command. jbang is a great way for you to install and execute scripts that use Karates Java API on any machine with minimal setup. If a few steps in your flow need to temporarily change (or completely bypass) the currently-set header-manipulation scheme, just update configure headers to a new value (or set it to null) in the middle of a script. Because of the last rule above, note that string-concatenation may not work quite the way you expect: Observe how you can achieve string concatenation if you really want, because any valid JavaScript expression can be stuffed within an embedded expression. This can be easily achieved with the following tweak to your maven section. A Gherkin file is saved with the ".feature" extension. A feature file is usually a common file which stores feature, scenarios, and feature description to be tested. In some cases, for large payloads and especially when the default system encoding is not UTF-8 (Windows or non-US locales), you may run into issues where a java.io.ByteArrayInputStream is encountered instead of a string. So the above could be re-written as follows: It is worth repeating that the above can be condensed into 2 lines. To test a specific feature in karate I run: mvn test -Dkarate.options="classpath:myfeature.feature". Provides supports for the Data Driver Testing that is built in-house, hence no need to depend on external frameworks. Runners. Once you get a result, you typically use it to set global variables. This is best explained via, returns the size of the map-like or list-like object. A common use case is to mix API-calls into a larger test-suite, for example a Selenium or WebDriver UI test. The name of the class doesn't matter, and it will automatically run any *. The following table summarizes some key differences between Cucumber and Karate. The Maven tradition is to have non-Java source files in a separate src/test/resources folder structure - but we recommend that you keep them side-by-side with your *.java files. Refer to the demos for another example: soap.feature. _ > 0' }, # when validation logic is an 'equality' check, an embedded expression works better, Then match temperature contains { fahrenheit, # when the response is binary (byte-array), # incidentally, match and assert behave exactly the same way for strings, # if b can be present (optional) but should always be null, """ This is typically combined with multipart file as shown below. Set its name to "Karate tests". Here is how you can pass data from one feature file another. This is a problem especially for expensive, time-consuming HTTP calls, and this has been an open issue for a long time. What is even more interesting is that expressions can refer to variables: And functions work as well ! Bloating your configuration can lead to loss of performance, and maintainability may suffer. But there are cases where you need to take custom actions like saving a response to a file, file reading or writing, etc. Below is a simple example that will compare a baseline image to a more recent latest image. For example: Note that it has to be a pure JavaScript expression - which means that match syntax such as contains will not work. They are param, header, cookie, form field and multipart field. But the recommended way is to use the karateEnv(name, value) or systemProperty(name, value) API on the parallel-runner. You can easily assign the whole response (or just parts of it using Json-Path or XPath) to a variable, and use it in later steps. Cucumber has a concept of Scenario Outlines where you can re-use a set of data-driven steps and assertions, and the data can be declared in a very user-friendly fashion. Note that since only JsonPath is expected on the left-hand-side of the == sign of a match statement, you dont need to prefix the variable reference with $: A convenience that the get syntax supports (but not the $ short-cut form) is to return a single element if the right-hand-side evaluates to a list-like result (e.g. deleted: false Conditional logic is not recommended especially within test scripts because tests should be deterministic. Read the documentation of the stand-alone JAR for more - such as how you can even install custom command-line applications using jbang ! The Karate Demo has a working example of the recommended parallel-runner set up. *.feature files and JavaScript functions. A Java API also exists for those who prefer to programmatically integrate Karates rich automation and data-assertion capabilities. Calling the feature file from another feature file using karate The karate-chrome Docker is an image created from scratch, using a Java / Maven image as a base and with the following features: Chrome in "full" mode (non-headless) Chrome DevTools protocol exposed on port 9222. time: '#? """, """ You can also compare images using Karate path prefixes (e.g. Let's have a look over the a very simple and plane gatling script which uses Karate . To run a script *. Prefer classpath: when a file is expected to be heavily re-used all across your project. You usually wont need this, but the second-last line above shows how the karate object can be used to evaluate JsonPath if the filter expression depends on a variable. How to call custom Java code in karate API tests? None of the examples in the documentation use the $varName form on the LHS, and this is the recommended best-practice. As a rule of thumb, prefer match over assert, because match failure messages are more detailed and descriptive. var sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ"); Since a SOAP request needs special handling, this is the only case where the method step is not used to actually fire the request to the server. Refer to conditional logic for more ideas. #string This comes in useful because depending on how you organize your files and folders - you can have multiple feature files executed by a single JUnit test-class. The Cucumber JSON format can be also emitted, which gives you plenty of options for generating pretty reports using third-party maven plugins. """, * configure imageComparison = { onShowConfig, # don't embed the image comparison UI when the latest image is the same / similar to the baseline (e.g. Especially since strings can be easily coerced to numbers (and vice-versa) in Javascript, you can combine built-in validators with the self-validation predicate form like this: '#number? It is sometimes useful to be able to check if a key-value-pair does not exist. This is useful in any situation where you need to concatenate dynamic string fragments to form content such as GraphQL or SQL. Until now, I have shown you run your test cases directly on feature files. if so, is the configured value a JavaScript function ? And there is another example in the karate-demos: schema.feature where you can compare Karates approach with an actual JSON-schema example. The $varName form is used on the right-hand-side of Karate expressions and is slightly different from pure JsonPath expressions which always begin with $. Karate UI | Karate This is a sample Spring Boot web-application that exposes some functionality as web-service end-points. This means that as long as the token on file is valid, you can save time by not having to make the one or two HTTP calls needed to sign-in or create throw-away users in your SSO store. When the level is DEBUG the entire request and response payloads are logged. Note that #present and #notpresent only make sense when you are matching within a JSON or XML context or using a JsonPath or XPath on the left-hand-side. If you are looking for a way to do something only once per Feature, take a look at callonce. You can adjust configuration settings for the HTTP client used by Karate using this keyword. Feature: multiple header management approaches that demonstrate how after. But take a look at how Karate can loop over a *.feature file for each object in a JSON array - which gives you dynamic data-driven testing, if you need it. Changing request body in test script. This example actually calls into existing Java code, and being able to do this opens up a whole lot of possibilities. As mentioned above, most CI tools would be able to process the JUnit XML output of the parallel runner and determine the status of the build as well as generate reports. Refer to the demo karate-config.js for an example and how the demo.server.port system-property is set-up in the test runner: TestBase.java. If you want to keep the level as DEBUG (for HTML reports) but suppress logging to the console, you can comment out the STDOUT root appender-ref: Or another option is to use a ThresholdFilter, so you still see critical logs on the console: If you want to exclude the logs from your CI/CD pipeline but keep them in the execution of your users in their locals you can configure your logback using Janino. # but using karate.range() you can even do this ! Something worth mentioning here is that you would hardly need to use assert in your test scripts. Refer to the documentation for cookie for details and how you can disable this if need be. This means that even when you have dynamic server-side generated values such as UUID-s and time-stamps appearing in the response, you can still assert that the full-payload matched in one step. The retry keyword is designed to extend the existing method syntax (and should appear before a method step) like so: Any JavaScript expression that uses any variable in scope can be placed after the retry until part. if there is no matching tag - that the Examples without a tag will be executed. return jd.doWork(arg); Enable HTTPS calls without needing to configure a trusted certificate or key-store. Create Karate API Test Script( Feature File ) - TestingDocs.com } }, right: 1496 Just write the url then base URL after that. And with Karate expressions, you can dive into JavaScript without needing to define a function - and conditional logic is a good example. Also note that you can run a scenario by name, for e.g. If you find yourself juggling multiple tags with logical AND and OR complexity, refer to this Stack Overflow answer. for simulating check-boxes and multi-selects): You can also dynamically set multiple fields in one step using the form fields keyword. Karate-config.js, Is it possible to run java method after every karate scenario? You use the listen keyword (with a timeout) to wait until that event occurs. Instantiating a Java class and using this in a test is easy (see example): Since karate-config.js is processed for every Scenario, you can use a singleton instead of calling new every time. This is a normal JUnit 4 test class ! The section on Karate Expressions goes into the details. var JavaDemo = Java.type('com.mycompany.JavaDemo'); It is worth mentioning that to do the equivalent of the last line in Java, you would typically have to traverse 2 Java Objects, one of which is within a list, and you would have to check for nulls as well. This example uses contains and the #? intuit. Here is a recap of symbols that can be used in JSON embedded expressions: There is a shortcut for match each explained in the next section that can be quite useful, especially for in-line schema-like validations. Here is how to replace one placeholder at a time: Karate makes it really easy to substitute multiple placeholders in a single, readable step as follows: Note how strings have to be enclosed in quotes. You can define the base URL in Karate with the keyword. And a very common need would be to use a file as the request body: The rarely used file: prefix is also supported. These examples (all exact matches) can make things more clear: Note that you can alternatively use JsonPath on the left-hand-side: But of course it is preferable to match whole objects in one step as far as possible. 12341234 Is there a way to run a single scenario defined into a feature? } will get encoded into %3F. API tests are written using Behaviour Driven Development (BDD) Gherkin syntax. Singapore | Facts, Geography, History, & Points of Interest Here is an example of what is possible: Not something you would commonly use, but in some cases you need to disable Karates default behavior of attempting to parse anything that looks like JSON (or XML) when using multi-line / string expressions. name: Smith This is easily achieved with the karate.repeat() API: And theres also karate.range() which can be useful to generate test-data. Find centralized, trusted content and collaborate around the technologies you use most. JsonPath and Karate expressions are not supported. The .graphql and .gql extensions are also recognized (for GraphQL) but are handled the same way as .txt and treated as a string. Cuda Memory CheckPerhaps the easiest way to check a file Run cat /usr Here are some examples: Now that we have seen how JSON is a native data type that Karate understands, there is a very nice way to create JSON using Cucumbers support for expressing data-tables. Insert spring-jdbc and mysql-connector-java to pom.xml. You need to be familiar with Karate in order to understand the Calling Custome Java Code in Karate API Teststutorial. feature file from your Java IDE, you just need the following empty test-class in the same package. Do note that if you prefer a pure Java API - Karate has that covered, and with far more capabilities. You could always do this in two steps: As a convenience, embedded expressions are supported on the Right Hand Side of a match statement even for quoted string literals: And do note that in Karate 1.0 onwards, ES6 string-interpolation within backticks is supported: An alternative to embedded expressions (for JSON only) is to enclose the entire payload within parentheses - which tells Karate to evaluate it as pure JavaScript. This is especially useful when capturing screenshots during tests and comparing against baseline images that are known to be correct. The recommended approach for Karate reporting in a Continuous Integration set-up is described in the next section which can generate the JUnit XML format that most CI tools can consume.
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karate run specific feature file
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