But there is an elegant way you can specify a default value using the karate.get() API: A word of caution: we recommend that you should not over-use Karates capability of being able to re-use features. locateAll() can take a second argument which has to be a JavaScript predicate function, that returns a boolean true or false. If you want to pretty print a JSON or XML value with indenting, refer to the documentation of the print keyword. 'name is Bob and age is 5', # the single cell can be any valid karate expression, * def generator = function(i){ if (i == 20) return null; return { name, Keywords that set multiple key-value pairs in one step, Managing Headers, SSL, Timeouts and HTTP Proxy, Matching Sub-Sets of JSON Keys and Arrays, mix Karate into Java projects or legacy UI-automation suites, Karate entered the ThoughtWorks Tech Radar, 7 New Features in Karate Test Automation Version 1.0, nested chunks of JSON that name-space your config variables, alternate way of calling JavaScript functions, exact same example implemented in REST-assured and TestNG, do not use this unless you know what you are doing, see above, Comparison engine(s) to use. 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. A good example is when you want to use a CSV file as the request-body for a file-upload. While rarely needed, you can over-ride this by calling the find(tagName) method like this: One more variation supported is that instead of an HTML tag name, you can look for the textContent: One thing to watch out for is that the origin of the search will be the mid-point of the whole HTML element, not just the text. You can experiment for yourself (probably depending on the size of your test-automation team) if this leads to any appreciable benefits, because the down-side is that you need to keep switching between 2 files - when writing and maintaining tests. Test data can be within the main flow itself, which makes scripts highly readable. If parsing fails, Karate will log a warning and the value of response will then be a plain string. That said, the syntax is very concise, and the convention of every step having to start with either Given, And, When or Then, makes things very readable. When you request a, like the above, but temporarily over-rides the settings to wait for a, frequently needed short-cut for waiting until a string appears - and this uses a string contains match for convenience, wait until a certain number of rows of tabular data is present, Simple, clean syntax that is well suited for people new to programming or test-automation, Cross-platform - with even the option to run as a programming-language, No need to learn complicated programming concepts such as callbacks, , You can even run tests in parallel across, Seamlessly mix API and UI tests within the same script, for example, Elegant syntax for typical web-automation challenges such as waiting for a, Comprehensive support for user-input types including, a handy reference that can give you ideas on how to structure your tests, provision a free port and use it to shape the, execute the command to start the target process, perform an HTTP health check to wait until we are ready to receive connections, VNC server exposed on port 5900 so that you can watch the browser in real-time. This is important because they are designed to answer the question: does the element exist in the HTML page right now ?. And this call is using shared scope. You can start a Driver instance programmatically and perform actions and assertions like this: You can find the complete example here. Herea table of the alternative in-line forms compared with the standard form. Assertions and HTML reports are built-in, and you can run tests in parallel for speed. This method returns a boolean (true or false), perfect for asserting if an element exists and giving you the option to perform conditional logic, or manually fail the test. Although all properties in the passed JSON-like argument are unpacked into the current scope as separate named variables, it sometimes makes sense to access the whole argument and this can be done via __arg. The listenResult magic variable will hold the value passed to the call to karate.signal(). Before we get to the HTTP keywords, it is worth doing a recap of the various shapes that the right-hand-side of an assignment statement can take: They are url, path, request, method and status. As a rule of thumb, prefer match over assert, because match failure messages are more detailed and descriptive. Note how the fake response.json is tiny compared to the real JSON, because we know that only a few data-elements are needed for the UI to work in this case. For placeholder-substitution, the replace keyword can be used instead, but with the advantage that the text can be read from a file or dynamically created. We can return JSON and even an image using a mock like this: Refer to the Karate test-doubles documentation for details. Of course this can be useful if the element you are seeking is diagonally offset from the locator you have. Here are the configuration keys supported: If you need to set any of these globally you can easily do so using the karate object in karate-config.js - for e.g: In rare cases where you need to add nested non-JSON data to the configure value, you have to play by the rules that apply within karate-config.js. When JavaScript executes in Karate, the built-in karate object provides some commonly used utility functions. This will give you the usual HTML report showing what features will be run, including all steps shown (including comments) so that it can be reviewed. This is preferred because it takes care of situations such as if the value is undefined in JavaScript. For example: Note that it has to be a pure JavaScript expression - which means that match syntax such as contains will not work. This method returns a byte array. all the key-value pairs are added to the HTTP headers. In some cases where the response JSON is wildly dynamic, you may want to only check for the existence of some keys. You may be able to turn this into a custom record-replay framework, or do other interesting things. This will return all elements that match the locator as a list of Element instances. POST method in HTTP is used to create a new resource on the server. Refer to this demo feature for an example: kitten-create.feature. "a": 1, 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. There is only one thing you need to do to switch the environment - which is to set a Java system property. Before you consider the set keyword - note that for simple JSON update operations, you can use eval - especially useful when the path you are trying to mutate is dynamic. var sdf = new SimpleDateFormat('yyyy/MM/dd'); For example: For Gradle, you must extend the test task to allow the karate.options to be passed to the runtime (otherwise they get consumed by Gradle itself). JavaScript Functions are also native. return a pretty-printed, nicely indented string representation of the JSON value, also see: return a pretty-printed, nicely indented string representation of the XML value, also see: get the value of any Java system-property by name, useful for, returns a JSON array of integers (inclusive), the optional third argument must be a positive integer and defaults to 1, and if start < end the order of values is reversed, very rarely used - when needing to perform conditional removal of JSON keys or XML nodes. And especially when it comes to test-automation, we have found that attempts to apply patterns in the pursuit of code re-use, more often than not - results in hard-to-maintain code, and severely impacts readability. The above example can be re-factored in a very elegant way as follows, using Karates native support for JavaScript: The great thing here is that the innnerText() function can be defined in a common feature which all your scripts can re-use. Multi-values are supported the way you would expect (e.g. Note: desiredCapabilities has been deprecated and not recommended for use. if you are using Karate to create a Java application, LOGBack will look for logback.xml. Note that the parser is lenient so that you dont have to enclose all keys in double-quotes. For convenience, it will do a string contains match (not an exact match) so you dont need to worry about http vs https for example. This can loop until any user-defined condition and can use any variable (or Karate or Driver JS API) in scope. This approach is indeed slightly more complicated than traditional *.properties files - but you need this complexity. The answer is no. The last row in the table is a little different from the rest, and this short-cut form is the recommended way to validate the length of a JSON array. One workaround is to temporarily disable or rename your Maven settings.xml file, and try again. # and yes, you can assert against nested objects within JSON arrays ! The Cucumber JSON format can be also emitted, which gives you plenty of options for generating pretty reports using third-party maven plugins. You can always use a JavaScript switch case within an eval or function block. Here are the rules Karate uses on bootstrap (before every Scenario or Examples row in a Scenario Outline): Advanced users who build frameworks on top of Karate have the option to supply a karate-base.js file that Karate will look for on the classpath:. They seamlessly fit in-line within your test script. See this for an example. Note that scriptAll() will return an array, as opposed to script(). The websocket URL will look like this: ws://127.0.0.1:4444/0e0bd1c0bb2d4eb550d02c91046dd6e0. jbang is a great way for you to install and execute scripts that use Karates Java API on any machine with minimal setup. Setting values on JSON documents is simple using the set keyword. See Chrome Java API. { The last boolean argument is whether the karate-config.js should be processed or not. For convenience, non-existent keys (or array elements) will be created automatically. There are two types of code that can be call-ed. If the argument passed to the call of a *.feature file is a JSON array, something interesting happens. Also make sure that you complete the set up of things like url, param, header, configure etc. The karate-demo has an example showing various ways to configure or set headers: headers.feature. { subType: { name: 'Smith', deleted: false } This is useful when you ship a JAR file containing re-usable features and JavaScript / Java code and want to default a few variables that teams can inherit from. Karate Ui automation. Since the karate object is injected within karate-config.js on start-up, it is a simple and effective way for other processes within the same JVM to pass configuration values to Karate at run-time. This is very useful to filter the results that match a desired condition - typically a text comparison. """, """ var jd = new JavaDemo(); Like above, but force the SSL algorithm to one of, Whether the HTTP client automatically follows redirects - (default, Set the connect timeout (milliseconds). Note that def can be used to assign a feature to a variable. 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. To avoid flaky tests, use waitForUrl(). There can be multiple Scenario-s in a *.feature file, and at least one should be present. or anything wrapped in parentheses which will be evaluated as JavaScript - e.g. An additional-level of auto-conversion happens when objects cross the boundary between JS and Java. For performance reasons, you can implement enableForUri() so that this activates only for some URL patterns. This means that you can have the below snippet activate only for your CI build, and you can leave your feature files set to point to what you would use in dev-local mode. Karate has an elegant approach to handling any action such as click() that results in a new page load. Karate has enhanced the Cucumber Scenario Outline as follows: These are best explained with examples. 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? In real-life tests, these are very useful when the order of items in arrays returned from the server are not guaranteed. Note that the API call (or the routine that gets the required data) can be made to run only once for the whole test-suite using karate.callSingle(). "b": 4, "b": 2, If you read from a file, the advantage is that multiple scripts can re-use the same data. Karate Framework is an open-source Behavior Driven Development (BDD) testing framework for API test automation, performance testing, and UI testing. All the methods that return the following Java object types are chain-able. If you are familiar with Cucumber (JVM), you may be wondering if you need to write step-definitions. As you can imagine, this can handle un-predictable dialogs, advertisements and the like. See also responseStatus if you want to do some complex assertions against the HTTP status code. If you have one pre-started, you need to use the playwrightUrl driver config. If you need to actually do something with each returned Element, see locateAll() or the option below. This is sometimes needed to slow down keystrokes, especially when there is a lot of JavaScript or security-validation behind the scenes. #string And steps that follow should logically be in the Then form. Karate is even able to ignore fields you choose - which is very useful when you want to handle server-side dynamically generated fields such as UUID-s, time-stamps, security-tokens and the like. You can call send() on the returned object to send a message. Karate an Open source framework developed by Karatelabs has made Test Automation simple and unified for both API testing and UI Automation using Gherkins. This is very close to how custom keywords work in other frameworks. For every HTTP request made from Karate, the internal flow is as follows: This makes setting up of complex authentication schemes for your test-flows really easy. It is sometimes useful to be able to check if a key-value-pair does not exist. 5 if an API needs to be called to get a JSON array, you can call a separate Scenario to set up this data. Karate provides a far more simpler and more powerful way than JSON-schema to validate the structure of a given payload. This is best explained via, returns the size of the map-like or list-like object. @smoke @module=one @module=two etc. To run only a single scenario, append the line number on which the scenario is defined, de-limited by :. When you are in a hurry, you can pause a test in the middle of a flow just to look at the browser developer tools to see what CSS selectors you need to use. And this example may make it clear why using Karate itself to drive even your UI-tests may be a good idea. Since templates can be loaded using the classpath: prefix, you can even re-use templates across your projects via Java JAR files. The BDD syntax popularized by Cucumber is language-neutral, and easy for even non-programmers. In Karate - these are typically one-liners. You can even create (or modify existing) JSON arrays by using multiple columns. A set of real-life examples can be found here: Karate Demos. A good example is when you have the expected data available as ready-made JSON but it is in a different shape from the actual data or HTTP response. For another example, see: examples.feature. What this means is that it can be chained as you expect. Powerful JSON & XML declarations are built-in, and you can run tests in parallel for speed. Another example for a popular Maven reporting plugin that is compatible with Karate JSON is Cluecumber. a JSON array). To define Karate DSL, in simple words, we can say that it is a blend of API test-automation, mocks and performance-testing with UI-testing into a single, unified framework. - Cucumber style of writing the program which follows the BDD approach. Here is how the example above looks like: Validation can be performed if needed on the response to this HTTP POST which may be HTML, and the karate.extract() API may come in useful. You could use it for hard-coded absolute paths in dev mode, but is obviously not recommended for CI test-suites. This is convenient for complex nested payloads where you are sure that you only want to check for some values in the various trees of data. """, # optional (can be null) and if present should be an array of size greater than zero, # should be an array of size equal to $.count, # use a predicate function to validate each array element, # if you prefer using 'pure' JsonPath, you can do this, # using the karate object if the expression is dynamic, """ 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. Think of it as just like waitFor() but without the wait part. Instead you would typically use the match keyword, that is designed for performing powerful assertions against JSON and XML response payloads. Git) to ignore karate-config-*.js if needed. And with Karate expressions, you can dive into JavaScript without needing to define a function - and conditional logic is a good example. useful to scrape text out of non-JSON or non-XML text sources such as HTML, like the above, but returns a list of text-matches. Note that Karate will fail the test if the waitUntil() returned false - even after the configured number of re-tries were attempted. Note that the ? Of course it is an option to have Karate tests in a separate stand-alone maven project and folder, while still being in the same Git repository. And if you need multiple functions, you can easily organize them into a single Java class with multiple static methods. Or - if a call is made without an assignment, and if the function returns a map-like object, it will add each key-value pair returned as a new variable into the execution context. This can be convenient if a particular call results in a huge response payload. Note that all the short-cut forms on the right-side of the table resolve to equality (==) matches, which enables them to be in-lined into a full (single-step) payload match, using embedded expressions. ] https://randomuser.me/api/portraits/women/34.jpg. Watch launch recording here. You can also dynamically set multiple files in one step using multipart files. Since XML is represented internally as a JSON-like or map-like object, if you perform string concatenation when printing, you will not see XML - which can be confusing at first. If you have trouble with