Postman's official website states that Postman has a few dynamic variables. My question is about:
{{$guid}}: Adds a v4 style guid
What kind of variable is {{$guid}}? How can it be used in test scripts for API requests?
GUID is the acronym for "Globally Unique Identifier". A GUID is mainly used to produce hexadecimal digits with groups separated by hyphens for uniqueness purposes, for example:
b3d27f9b-d21d-327c-164e-7fb6776f87b0
In postman you can use this to generate and send a random GUID to your api as required:
{
"id": "{{$guid}}",
}
On Send would produce(with the random example above):
{
"id": "b3d27f9b-d21d-327c-164e-7fb6776f87b0",
}
In case you are looking to generate a V4 guid which you want to set as an environment variable, which can then be used across your collection, you may do something like this in your pre-request script:
var uuid = require('uuid');
postman.setEnvironmentVariable('guid', uuid.v4());
You may then use the environment variable guid across multiple calls in your collection.
This becomes useful when you want to generate a guid once for an entire collection and need it to be constant across multiple requests.
If you want the guid to be generated for every request, you may directly use {{$guid}} in your payload like the other answers have explained.
Based on this interesting answer by Osloan in github: https://github.com/postmanlabs/postman-app-support/issues/886
For random generator use the below code in pre-Request
var text="shipment";
var charset = "abcdefghijklmnopqrstuvwxyz0123456789";
for( var i=0; i < 8; i++ )
text += charset.charAt(Math.floor(Math.random() * charset.length));
postman.setEnvironmentVariable("awb", text);
for detailed explanation follow below link
http://jmeterblogb.blogspot.in/2016/10/how-to-automate-rest-api-in-postman.html
In Postman there are Two types of variable available.
1). If you have static variable like Ip, Port or Something who doesn't change through the project you can store into the Environments Variable using
1.1). Setting > Manage Environment > Add > Name of Environment > Add Parameters Like >In Key : Port and In Value : 80
1.2). You can also add in request > Pre-request Script
add "Set an environment variable " from snippet...
postman.setEnvironmentVariable("Port", "80");
2). for Dynamic Variable like SessionIdentifier.You have to capture from response and add in Test set a global variable from snippet it looks like
"var jsonData = JSON.parse(responseBody);
postman.setGlobalVariable("SessionIdentifier", jsonData.Data.);"
in the same response.
For use, you should {{Port}},{{SessionIdentifier}}.
After it added into the Environments.
Use {{$randomUUID}} like variable to change at each request.
Related
I know that we can set a variable in different scopes via a pre-request script, but can we set one for on "execution" or "run of test".
I have a folder that contains two requests to validate a scenario where the first one will create a resource with an unique id and the second one will fail by trying to create a resource with the same unique id.
I would like to generate that unique value each time the collection is run. At this time I use a collectionVariables to test and set when not present but that variable is kept between each "retry".
Can I create a variable that will be the same only for one execution of a collection ?
Thanks
I have similar cases, where I store the values in Environment variables and then unset them in the Pre-request script of the first request:
pm.environment.unset("myVariable");
So, my solution is the same as the one suggested by #so cal cheesehead.
I create a variable in either the folder pre-request or the first request script. And unset it after the last test in the last request.
The sad part is that the initialization and destruction of this variable is spread in different scripts.
Postman allows to generate random dummy data by using pre-defined variables, on example this one would be replaced by random company name:
{{$randomCompanyName}}
Using pre-defined variables multiple times return different values per request.
The question is how to save once generated value to the variable for further usage on example in tests, something like(it doesn't work):
pm.variables.set("company", {{$randomCompanyName}});
Thanks.
You can use the .replaceIn() function with that {{...}} syntax in the sandbox.
pm.globals.set("company", pm.variables.replaceIn('{{$randomCompanyName}}'));
I've used a global variable to store the value as you would want to use it again. You could also use either the environment or collectionVariables scope to do the same thing.
I have an api endpoint which returns a set of values. I want to use these values as a source for predefined values for the input fields in the decision table.
As of now, I can only see the possibility of adding these values as static values in the Modeler. Checked the camunda documentation, could not find anything relevant to this requirement.
Any pointers would be helpful.
You have a few different options to pull values from an external source for use in a decision table. For the purposes of this response, I'll assume your external source is a REST API endpoint. Here are those options:
You could call the decision table from a process definition, and you could source the external values in the process definition prior to the call to the decision table. For example, you could use a Service Task configured as an 'http-connector' to pull the values.
You could expand your decision table such that it becomes a DRD (Decision Requirements Diagram) and utilize a Decision Literal Expression to pull that data.
Finally, you could embed your code to pull data from the external source within a Java bean that is known to the process engine in the current context and call that bean from within your decision table.
I know there's a lot there; if any of it sounds foreign, please review the Camunda documentation at https://docs.camunda.org.
Let me focus on #2 above for a moment and give you a specific example... If you chose that route, your Decision Literal Expression could have the following code within it:
//Get access to the Connectors and Spin Objects.
var Connectors = Java.type('org.camunda.connect.Connectors');
var Spin = Java.type('org.camunda.spin.Spin');
//Create an instance of the HTTP Connector and make the request.
var httpConnector = Connectors.http();
var resp = httpConnector.createRequest()
.post()
.url('http://localhost:1027/creditscore')
.contentType('application/json')
.payload('{"ssn":\"' + ssn + '\"}')
.execute()
.getResponse();
//Retrieve the credit score from the response.
var creditScore = Spin.JSON(resp).prop('creditScore').numberValue();
//Return the credit score, setting it to the variable name specified here.
creditScore;
In that example, I've set the variable name to "creditScore", the type of the variable to "long" and the expression language to "javascript". It requires one variable as input, with that being "ssn". You would be able to use that variable "creditScore" in any decision tables that depend on that decision literal expression in your DRD.
I'm using Postman and wondering if I can use a stored JSON object to create variable for additional calls. For an example: I saved an array which include name and ID:
[{"id":28,"name":"Action"},{"id":12,"name":"Adventure"},
{"id":16,"name":"Animation"},{"id":35,"name":"Comedy"},
{"id":80,"name":"Crime"},{"id":99,"name":"Documentary"},
{"id":18,"name":"Drama"},{"id":10751,"name":"Family"},
{"id":14,"name":"Fantasy"},{"id":36,"name":"History"},
{"id":27,"name":"Horror"},{"id":10402,"name":"Music"},
{"id":9648,"name":"Mystery"},{"id":10749,"name":"Romance"},
{"id":878,"name":"Science Fiction"},{"id":10770,"name":"TV Movie"},
{"id":53,"name":"Thriller"},{"id":10752,"name":"War"},
{"id":37,"name":"Western"}]
I'm triggering another API (second call) that retrieves only IDs, so the response is like this: "genre_ids": [35, 10402]
Is there a way to create an environment variable that looks for the IDs, fetch the relevant name from the second API and create a name oriented variable so on the case above 35=comedy and 10402=music so the variable will be: comedy,music?
to save environment variable you can do the following (see the snippets on the right side of postman):
postman.setEnvironmentVariable("variable_key", "variable_value");
if you want to save a global variable just do :
postman.setGlobalVariable("variable_key", "variable_value");
and then use them as you want.
Alexandre
Definitely it's possible with "Tests"(or Post-Request) script.
But since you have 2 requests(and Postman force you there should be 2 separated requests) you should save response from first request into variable with setEnvironmentVariable or setGlobalVariable and after getting response for 2nd request - to parse response for first one and iterate over it, looking up by id given.
Is it possible to extract and compare the contents of the website using imacros? I would like to extract data and compare using some pre-defined information and thus modify only some fields rather than ensuring all fields within a page are set to a default. Is it possible?
Yes it is.
You can use macro to extract information and save it in JavaScript variable. And let's say you scraped data from 2 websites and if both have keyword "foo bar" you alert "foo bar found".
var test1=website_text1.search(/foo bar/gi);
var test2=website_text2.search(/foo bar/gi);
if (( test1>=0 ) && (test2 >=0 ))
{
alert("foo bar found");
}
else
{
alert("foo bar is not on both websites");
}
For the full code of what you explained it will take more information.
why not extract it in a csv file ..then use the csv as a database to compare whatever variable you might be needing,you can go futher by creating a macro to automate the csv macro comparion.make a google search on macros for csv.
I am not sure what exactly you need.
iMacros cannot perform such tasks by itself, you need scripting - either basic javascript or whatever else you know how to use (java, php, etc)
Anyway, I believe Selenium http://docs.seleniumhq.org/ may be closer to what you need. You should give it a try.