[Bug]: No such field exception for client method call in a test function

[TharmiganK]

Description

Getting no such field exception when I have a client method call inside the test function. The client method has escape characters and has a default parameter.
If I move the same code in the test function to the main function then it worked as expected
It seems like an issue in the generated code for the test function

Steps to Reproduce

1. Create a ballerina project

2. Add the following to main.bal

   import ballerina/io;
   client class Client {
   
       resource function get users\-all(string 'order = "asc") returns json {
           return [];
       }
   }
   
   final Client clientEP = new;
   
   public function main() {
       json res = clientEP->/users\-all();
       io:println("obtained response: ", res);
   }

3. Add the following test function in the tests directory

   import ballerina/io;
   import ballerina/test;
   
   @test:Config {}
   function test() {
       json res = clientEP->/users\-all();
       io:println("obtained response: ", res);
   }

4. Run bal run - This is working

5. Run bal test:

   $ bal test
   
   Compiling source
           tharmigan/project:0.1.0
   
   Running Tests
   
           project
   [2024-05-06 08:48:51,532] SEVERE {b7a.log.crash} - $Client_$get$users\-all_order 
   java.lang.NoSuchFieldError: $Client_$get$users\-all_order
           at tharmigan.project$test.0.tests.test.test(tests/test.bal)
           at tharmigan.project$test.0.tests.test_execute-generated_1.test$lambda0$(tests/test_execute-generated_1.bal:4)
           at io.ballerina.runtime.internal.scheduling.SchedulerItem.execute(SchedulerItem.java:54)
           at io.ballerina.runtime.internal.scheduling.Scheduler.run(Scheduler.java:320)
           at io.ballerina.runtime.internal.scheduling.Scheduler.runSafely(Scheduler.java:287)
           at java.base/java.lang.Thread.run(Thread.java:833)
    
   
           test has failed.
   
   
                   [fail] test:
   
                       error("java.lang.NoSuchFieldError: $Client_$get$users\-all_order")
                                   callableName: test$lambda0$ moduleName: tharmigan.project$test.0.tests.test_execute-generated_1 fileName: tests/test_execute-generated_1.bal lineNumber: 4
   
   
   
                   0 passing
                   1 failing
                   0 skipped
   
                   Test execution time : 0.032s
   error: there are test failures

Affected Version(s)

SwanLake Update 8 (2201.8.6)
SwanLake Update 9 (2201.9.0)

OS, DB, other environment details and versions

No response

Related area

-> Test Framework

Related issue(s) (optional)

No response

Suggested label(s) (optional)

No response

Suggested assignee(s) (optional)

No response

[nipunayf]

The problem is only reproducible when the client definition is outside of the respective test file. Once the definition is placed along with the test function in the same file, the error is not generated.

[TharmiganK]

The problem is only reproducible when the client definition is outside of the respective test file. Once the definition is placed along with the test function in the same file, the error is not generated.

Yes, the issue arises when we have the generated code for test. There seems to be an inconsistency in the generated byte code for the tests and main, where we call a field to get the default value for this resource method argument.

[Dilhasha]

@nipunayf Shall we check the generated jar and verify whether this field is there?

[Thevakumar-Luheerathan]

The slash in the resource method is causing the issue. If we remove that slash, it works fine. The following snippets show various instances of generated code.

• The client is in main.bal

  1. Generated client call in main.bal

     

  2. Generated client call in test.bal

     

• The client is in test.bal

  1. Generated client call in test.bal
     

@gabilang can you have a look on it?