Null Pointer Exception while integrating swagger coverage with karate framework

Question

Null Pointer Exception while integrating swagger coverage with karate framework

Opened this issue a year ago · 13 comments

I'm submitting a ...

bug report

Error when running `mvn clean test`

java.lang.NullPointerException: Cannot invoke "java.nio.file.attribute.FileTime.toInstant()" because "this.minResultTime" is null

If the current behavior is a bug, please provide steps to reproduce, broken swagger specification and swagger-coverage-output:

Followed this code example provided in the README to generate a swagger coverage report after running karate tests for my own API:

import java.net.URI;
import com.github.viclovsky.swagger.coverage.karate.SwaggerCoverageRunner;
import com.intuit.karate.Results;
import org.junit.jupiter.api.Test;

public class CoverageReportRunner {

    @Test
    void testAll(){
        Results results = SwaggerCoverageRunner.path("classpath:some/path")
                .coverageDir("api-test-coverage")
                .swaggerSpec(URI.create("https://petstore3.swagger.io/api/v3/openapi.json"))
                .oas3()
                .outputJunitXml(true)
                .karateEnv("dev")
                .parallel(1);
    }
}

The error seems to arise when the code reaches .parallel(1)

Other information

The swaggerSpec() is passed a path to the .yaml file instead of a URL
The Coverage directory and naming conventions are followed appropriately, dependencies are added (Maven), and Java 16 and Junit5 are being used.

Answer 1 · 2023-07-04T14:09:47.000Z

Hey!
Could you please provide the full call stack for the error?

Answer 2 · 2023-07-04T14:15:49.000Z

Hi! For sure,

java.lang.NullPointerException: Cannot invoke "java.nio.file.attribute.FileTime.toInstant()" because "this.minResultTime" is null
 at com.github.viclovsky.swagger.coverage.core.results.builder.prebuilder.GenerationStatisticsBuilder.build([GenerationStatisticsBuilder.java:60]
 at com.github.viclovsky.swagger.coverage.core.generator.Generator.lambda$run$1([Generator.java:49]
 at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept([ForEachOps.java:183]
 at java.base/java.util.stream.ReferencePipeline$2$1.accept([ReferencePipeline.java:179]
 at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining([ArrayList.java:1625]
 at java.base/java.util.stream.AbstractPipeline.copyInto([AbstractPipeline.java:484]
 at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto([AbstractPipeline.java:474]
 at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential([ForEachOps.java:150]
 at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential([ForEachOps.java:173]
 at java.base/java.util.stream.AbstractPipeline.evaluate([AbstractPipeline.java:234]
 at java.base/java.util.stream.ReferencePipeline.forEach([ReferencePipeline.java:596]
 at com.github.viclovsky.swagger.coverage.core.generator.Generator.run([Generator.java:48]
 at com.github.viclovsky.swagger.coverage.karate.SwaggerCoverageRunner$SwaggerCoverageBuilder.generateReport([SwaggerCoverageRunner.java:126]
 at com.github.viclovsky.swagger.coverage.karate.SwaggerCoverageRunner$SwaggerCoverageBuilder.parallel([SwaggerCoverageRunner.java:163]
 at TestRunner.testAll([TestRunner.java:16]
 at java.base/java.util.ArrayList.forEach([ArrayList.java:1511]
 at java.base/java.util.ArrayList.forEach([ArrayList.java:1511]

Answer 3 · 2023-07-05T21:45:50.000Z

Hey, sorry for the late response, I'm super busy atm. I had a quick look at it, and I think I know what could be going on. Can you maybe share the log file?

Answer 4 · 2023-07-06T19:04:17.000Z

No worries, I've attached the file:
log4j.log

Answer 5 · 2023-12-01T09:33:10.000Z

Hi, I've recently bumped into this same issue and would really like to try this module to check swagger coverage with Karate. Do you have any updates on this? Thank you!

Answer 6 · 2023-12-04T13:12:54.000Z

Hey guys, sorry I haven't gotten back to you on this issue. Can you also provide me with your log4j.log file and ideally a small reproduction project? I will try to take a look at this asap!

Answer 7 · 2024-01-04T12:03:08.000Z

Hi, sorry I hadn't come back to this issue. I managed to prepare a small reproduction project (which I've attached), but wasn't able at first to get the error above.

I was finally able to reproduce the null pointer exception, but only if I change protocol to https in karate-config.js when the proxy is used (which is wrong):

if (karate.properties['proxy.port']){ console.log("Proxy server is used"); protocol = "https"; }

My main problem, though, is I'm not able to run tests using the proxy with https endpoints. I tried the workaround described here:

https://github.com/viclovsky/swagger-coverage/blob/master/swagger-coverage-karate/README.md#-the-problem-with-https-and-the-workaround

but with no success. Is it possible to work with https while using the proxy to measure swagger coverage?

Thanks again!
myproject.zip

Answer 8 · 2024-01-05T06:44:20.000Z

I 've got the same error and same stack than the one from @dtk72 when i upgrade version of karate 1.4.1 and other libraries:

Update karate version to 1.4.1

Update jackson to 2.5.13 to be compatible

Update other libraries:
- armeria 1.26.4
- classgraph 4.8.165
- netty 4.1.104
- thymeleaf 3.1.2.RELEASE
- wiremock 2.27.2

https://github.com/tdeverdiere/swagger-coverage/tree/update-karate

Error : "java.lang.NullPointerException: Cannot invoke "java.nio.file.attribute.FileTime.toInstant()" because "this.minResultTime" is null"

Answer 9 · 2024-03-15T02:26:51.000Z

I got same issue, karate version is 1.4.0, swagger-coverage version is 1.5.0

Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.nio.file.attribute.FileTime.toInstant()" because "this.minResultTime" is null
        at com.github.viclovsky.swagger.coverage.core.results.builder.prebuilder.GenerationStatisticsBuilder.build(GenerationStatisticsBuilder.java:60)
        at com.github.viclovsky.swagger.coverage.core.generator.Generator.lambda$run$1(Generator.java:49)
        at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
        at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
        at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
        at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
        at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
        at com.github.viclovsky.swagger.coverage.core.generator.Generator.run(Generator.java:48)
        at com.github.viclovsky.swagger.coverage.CommandLine.run(CommandLine.java:77)
        at java.base/java.util.Optional.orElseGet(Optional.java:362)
        at com.github.viclovsky.swagger.coverage.CommandLine.main(CommandLine.java:34)

Answer 10 · 2024-03-15T02:29:57.000Z

I 've got the same error and same stack than the one from @dtk72 when i upgrade version of karate 1.4.1 and other libraries:
Update karate version to 1.4.1

Update jackson to 2.5.13 to be compatible

Update other libraries:
- armeria 1.26.4
- classgraph 4.8.165
- netty 4.1.104
- thymeleaf 3.1.2.RELEASE
- wiremock 2.27.2
https://github.com/tdeverdiere/swagger-coverage/tree/update-karate

Error : "java.lang.NullPointerException: Cannot invoke "java.nio.file.attribute.FileTime.toInstant()" because "this.minResultTime" is null"

Is the issue fixed on your side?

Answer 11 · 2024-03-15T08:57:06.000Z

Hello
No so i created an implementation of a Karate RuntimeHook: SwaggerCoverageRuntimeHook
And use it in the Runner configuration:

        Results results = Runner.path("classpath:...")
                .outputCucumberJson(true)
                .outputJunitXml(true)
                .hook(new SwaggerCoverageRuntimeHook("target", "target/test-classes/swagger-coverage-config.json"))
                .reportDir(karateOutputPath)
                .parallel(1);

To write SwaggerCoverageRuntimeHook i mostly use the code from swagger-coverage-karate: SwaggerCoverageRunner#generateReport
And i copy also the all class Generator from swagger-coverage-commandline/src/main/java/com/github/viclovsky/swagger/coverage/core/generator/Generator.java

I could give you the all code in my repo if you want

Answer 12 · 2024-04-27T16:38:53.000Z

This looks like related to karatelabs/karate#2048

Answer 13 · 2024-05-23T08:04:45.000Z

can you share repo @tdeverdiere

I'm submitting a ...

Error when running mvn clean test

If the current behavior is a bug, please provide steps to reproduce, broken swagger specification and swagger-coverage-output:

Other information

Error when running `mvn clean test`