I am learning how to use PACT into my Java project and I would like to define some values restrictions on the expected output. For example, into one request /hello-world I am expecting to receive a number into the id attribute that should be always bigger than zero.
package com.thiagomata.pact.hello.consumer.consumer;
import au.com.dius.pact.consumer.ConsumerPactBuilder;
import au.com.dius.pact.consumer.PactVerificationResult;
import static io.pactfoundation.consumer.dsl.LambdaDsl.newJsonBody;
import au.com.dius.pact.consumer.dsl.PactDslJsonBody;
import au.com.dius.pact.model.MockProviderConfig;
import au.com.dius.pact.model.RequestResponsePact;
import com.thiagomata.pact.hello.consumer.models.Greeting;
import io.pactfoundation.consumer.dsl.LambdaDslJsonBody;
import org.junit.Assert;
import org.junit.Test;
import scala.tools.jline_embedded.internal.Log;
import static au.com.dius.pact.consumer.ConsumerPactRunnerKt.runConsumerTest;
import static org.junit.Assert.assertEquals;
public class NameApplicationPactTest {
@Test
public void testNamePact() throws Throwable {
Log.debug("inside the test");
/**
* Creating the mock server
*
* Define the expected input
* Using relative address
* The provider address will be automatically created
* The provider port will be automatically created
* Define the expected output
* Keep the id as a undefined integer
* Set the content to the test
*/
RequestResponsePact pact = ConsumerPactBuilder
.consumer("hello_world_consumer")
.hasPactWith("hello_world_provider")
.uponReceiving("a request of hello world")
.path("/hello-world")
.matchQuery("name","johny")
.method("GET")
.willRespondWith()
.body(
newJsonBody( (LambdaDslJsonBody o) -> o.
numberType("id"). // <====================================
stringType("content", "Hello johny")
).build()
)
.toPact();
/**
* Let the Pact define the mock server address and port
*/
MockProviderConfig config = MockProviderConfig.createDefault();
/**
* Create the mock server into the defined config and with the
* pact result prepared
*/
PactVerificationResult result = runConsumerTest(
pact,
config,
mockServer -> {
Log.debug("inside mock server");
/**
* Pass the mock server configuration to the consumer classes
*/
DummyConsumer consumer = new DummyConsumer(
mockServer.getUrl(),
mockServer.getPort(),
"johny"
);
/**
* Now, when the code internally fires to the
* mockServer we should get the expected answer
*/
Greeting greeting = consumer.getGreeting();
Log.debug(greeting);
Assert.assertNotNull(
"Greeting id should not be null",
greeting.getId()
);
/**
* Currently I am not able to define a rule into the
* DSL Matching methods to assure that the value should
* be bigger than 0
*/
Assert.assertTrue( greeting.getId() > 0 ); // <=================================================
assertEquals(
"Validate expected default greeting content",
"Hello johny",
greeting.getContent()
);
Log.debug("status code = " + consumer.getStatusCode() );
Assert.assertTrue(
"test consumer status code",
consumer.getStatusCode().equals(
200
)
);
}
);
/**
* If some Assert inside of the anonymous functions fails
* it will not automatically throw a failure.
*
* We need to capture the error from the result
*/
if (result instanceof PactVerificationResult.Error) {
throw ((PactVerificationResult.Error) result).getError();
}
assertEquals(PactVerificationResult.Ok.INSTANCE, result);
}
}
Someone could say that PACT it is not able to apply such restrictions. But, looking to the generated PACT, it looks like that creating min value and max value to the generators should be a possible into the PACT:
{
"provider": {
"name": "hello_world_provider"
},
"consumer": {
"name": "hello_world_consumer"
},
"interactions": [
{
"description": "Test User Service",
"request": {
"method": "GET",
"path": "/hello-world"
},
"response": {
"status": 200,
"headers": {
"content-type": "application/json",
"Content-Type": "application/json; charset\u003dUTF-8"
},
"body": {
"id": 100,
"content": "string"
},
"matchingRules": {
"body": {
"$.id": {
"matchers": [
{
"match": "integer"
}
],
"combine": "AND"
},
"$.content": {
"matchers": [
{
"match": "type"
}
],
"combine": "AND"
}
}
},
"generators": {
"body": {
"$.id": {
"type": "RandomInt",
"min": 0, /* <======================================== */
"max": 2147483647
},
"$.content": {
"type": "RandomString",
"size": 20
}
}
}
},
"providerStates": [
{
"name": "default"
}
]
}
],
"metadata": {
"pact-specification": {
"version": "3.0.0"
},
"pact-jvm": {
"version": "3.5.10"
}
}
}
I try to find some way to do so, looking to the PACT code. So, following the track of the numberType method, of the LambdaDsl:
/* ... */
public LambdaDslObject numberType(final String... names) {
object.numberType(names);
return this;
}
/* ... */
That method calls the object.numberTypes that it is into the LambdaDslJsonBody with this possible methods:
/**
* Attribute that can be any number
* @param name attribute name
*/
public PactDslJsonBody numberType(String name) {
generators.addGenerator(
Category.BODY,
matcherKey(name),
new RandomIntGenerator(0, Integer.MAX_VALUE) // <========================
);
return numberType(name, 100);
}
/**
* Attributes that can be any number
* @param names attribute names
*/
public PactDslJsonBody numberType(String... names) {
for (String name: names) {
numberType(name);
}
return this;
}
/**
* Attribute that can be any number
* @param name attribute name
* @param number example number to use for generated bodies
*/
public PactDslJsonBody numberType(String name, Number number) {
body.put(name, number);
matchers.addRule(matcherKey(name), new NumberTypeMatcher(NumberTypeMatcher.NumberType.NUMBER));
return this;
}
Where there is only one generator, that starts always with zero.
So, there is some possible way to create this kind of random generator to PACT that assures that the value of the generated random number will be bigger than zero, or less than 100?
Aucun commentaire:
Enregistrer un commentaire