Fix not to render optional fields when unset

src/main/java/dev/cdevents/CDEvents.java

@@ -74,8 +74,6 @@ public static CloudEvent cdEventAsCloudEvent(CDEvent cdEvent) {
      * @return valid cdEvent
      */
     public static boolean validateCDEvent(CDEvent cdEvent) {
-        String cdEventJson = cdEventAsJson(cdEvent);
-
         JsonSchemaFactory factory = JsonSchemaFactory.getInstance(SpecVersion.VersionFlag.V202012);
         JsonSchema jsonSchema = factory.getSchema(cdEvent.eventSchema());
 

src/main/java/dev/cdevents/config/CustomObjectMapper.java

@@ -1,5 +1,6 @@
 package dev.cdevents.config;
 
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializationFeature;
@@ -15,6 +16,7 @@ public ObjectMapper customConfiguration() {
                 .enable(SerializationFeature.WRITE_ENUMS_USING_TO_STRING)
                 .enable(DeserializationFeature.READ_ENUMS_USING_TO_STRING)
                 .configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false)
+                .setSerializationInclusion(JsonInclude.Include.NON_NULL)
                 .registerModule(new JavaTimeModule());
     }
 }

src/test/java/dev/cdevents/CDEventsTest.java

@@ -1,25 +1,31 @@
 package dev.cdevents;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.github.packageurl.MalformedPackageURLException;
 import com.github.packageurl.PackageURL;
+import dev.cdevents.config.CustomObjectMapper;
 import dev.cdevents.constants.CDEventConstants;
 import dev.cdevents.events.*;
 import dev.cdevents.exception.CDEventsException;
 import io.cloudevents.CloudEvent;
 import org.junit.jupiter.api.Test;
 
+import java.io.IOException;
+import java.io.InputStream;
 import java.net.URI;
 import java.nio.charset.StandardCharsets;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.*;
 
 public class CDEventsTest {
 
-    @Test
-    void createPipelineRunFinishedEventAsCloudEvent() {
+    private static ObjectMapper objectMapper = new CustomObjectMapper().customConfiguration();
 
+    @Test
+    void createPipelineRunFinishedEventAsCloudEvent() throws IOException {
         PipelineRunFinishedCDEvent cdEvent =  new PipelineRunFinishedCDEvent();
         cdEvent.setSource(URI.create("http://dev.cdevents"));
 
@@ -42,6 +48,42 @@ void createPipelineRunFinishedEventAsCloudEvent() {
 
     }
 
+    @Test
+    void createPipelineRunFinishedEventOptionalFieldsUnset() throws IOException {
+        InputStream inputStream = getClass().getResourceAsStream("/pipelinerun_finished_optional.json");
+
+        JsonNode expectedJsonNode = objectMapper.readTree(inputStream);
+        JsonNode expectedContextNode = expectedJsonNode.get("context");
+        JsonNode expectedSubjectNode = expectedJsonNode.get("subject");
+
+        PipelineRunFinishedCDEvent cdEvent =  new PipelineRunFinishedCDEvent();
+        cdEvent.setSource(URI.create(expectedContextNode.get("source").asText()));
+        cdEvent.setSubjectId(expectedSubjectNode.get("id").asText());
+
+        String cdEventJson = CDEvents.cdEventAsJson(cdEvent);
+        JsonNode cdEventJsonNode = objectMapper.readTree(cdEventJson);
+        JsonNode cdEventContextNode = cdEventJsonNode.get("context");
+        JsonNode cdEventSubjectNode = cdEventJsonNode.get("subject");
+
+        //validates CDEvent against schema
+        assertTrue(CDEvents.validateCDEvent(cdEvent));
+
+        //assert context and subject mandatory fields
+        assertThat(cdEventContextNode.get("type").asText()).isEqualTo(expectedContextNode.get("type").asText());
+        assertThat(cdEventContextNode.get("source").asText()).isEqualTo(expectedContextNode.get("source").asText());
+        assertEquals(expectedSubjectNode, cdEventSubjectNode);
+        assertThat(cdEventSubjectNode.get("id").asText()).isEqualTo(expectedSubjectNode.get("id").asText());
+        assertThat(cdEventSubjectNode.get("type").asText()).isEqualTo(expectedSubjectNode.get("type").asText());
+
+        //assert Optional field Subject Source, Content pipelineName, url, outcome, errors are set to null
+        assertThat(cdEventSubjectNode.get("source")).isEqualTo(null);
+        assertThat(expectedSubjectNode.get("content").get("pipelineName")).isEqualTo(null);
+        assertThat(expectedSubjectNode.get("content").get("url")).isEqualTo(null);
+        assertThat(expectedSubjectNode.get("content").get("outcome")).isEqualTo(null);
+        assertThat(expectedSubjectNode.get("content").get("errors")).isEqualTo(null);
+
+    }
+
     @Test
     void testInvalidPipelineRunFinishedEventWithNoSubject() {
         PipelineRunFinishedCDEvent cdEvent =  new PipelineRunFinishedCDEvent();
@@ -90,6 +132,41 @@ void testInvalidPipelineRunQueuedEventWithNoSubject() {
         assertThat(exception.getMessage()).isEqualTo(expectedError);
     }
 
+    @Test
+    void createPipelineRunQueuedEventWithOptionalFieldsUnset() throws IOException {
+        InputStream inputStream = getClass().getResourceAsStream("/pipelinerun_queued_optional.json");
+
+        JsonNode expectedJsonNode = objectMapper.readTree(inputStream);
+        JsonNode expectedContextNode = expectedJsonNode.get("context");
+        JsonNode expectedSubjectNode = expectedJsonNode.get("subject");
+
+        PipelineRunQueuedCDEvent cdEvent =  new PipelineRunQueuedCDEvent();
+        cdEvent.setSource(URI.create(expectedContextNode.get("source").asText()));
+        cdEvent.setSubjectId(expectedSubjectNode.get("id").asText());
+
+        String cdEventJson = CDEvents.cdEventAsJson(cdEvent);
+        JsonNode cdEventJsonNode = objectMapper.readTree(cdEventJson);
+        JsonNode cdEventContextNode = cdEventJsonNode.get("context");
+        JsonNode cdEventSubjectNode = cdEventJsonNode.get("subject");
+
+        //validates CDEvent against schema
+        assertTrue(CDEvents.validateCDEvent(cdEvent));
+
+        //assert context and subject mandatory fields
+        assertThat(cdEventContextNode.get("type").asText()).isEqualTo(expectedContextNode.get("type").asText());
+        assertThat(cdEventContextNode.get("source").asText()).isEqualTo(expectedContextNode.get("source").asText());
+        assertEquals(expectedSubjectNode, cdEventSubjectNode);
+        assertThat(cdEventSubjectNode.get("id").asText()).isEqualTo(expectedSubjectNode.get("id").asText());
+        assertThat(cdEventSubjectNode.get("type").asText()).isEqualTo(expectedSubjectNode.get("type").asText());
+
+        //assert Optional field Subject Source, pipelineName, url is set to null
+        assertThat(cdEventSubjectNode.get("source")).isEqualTo(null);
+        assertThat(expectedSubjectNode.get("content").get("pipelineName")).isEqualTo(null);
+        assertThat(expectedSubjectNode.get("content").get("url")).isEqualTo(null);
+
+
+    }
+
     @Test
     void testPipelineRunQueuedEventWithCustomData() throws JsonProcessingException {
         PipelineRunQueuedCDEvent cdEvent =  new PipelineRunQueuedCDEvent();
@@ -151,6 +228,44 @@ void testInvalidPipelineRunStartedEventWithNoSubject() {
         assertThat(exception.getMessage()).isEqualTo(expectedError);
     }
 
+    @Test
+    void createPipelineRunStartedJsonEventWithOptionalFieldsUnset() throws IOException {
+
+        InputStream inputStream = getClass().getResourceAsStream("/pipelinerun_started_optional.json");
+
+        JsonNode expectedJsonNode = objectMapper.readTree(inputStream);
+        JsonNode expectedContextNode = expectedJsonNode.get("context");
+        JsonNode expectedSubjectNode = expectedJsonNode.get("subject");
+
+        PipelineRunStartedCDEvent cdEvent =  new PipelineRunStartedCDEvent();
+        cdEvent.setSource(URI.create(expectedContextNode.get("source").asText()));
+
+        cdEvent.setSubjectId(expectedSubjectNode.get("id").asText());
+        cdEvent.setSubjectPipelineName(expectedSubjectNode.get("content").get("pipelineName").asText());
+        cdEvent.setSubjectUrl(URI.create(expectedSubjectNode.get("content").get("url").asText()));
+
+        String cdEventJson = CDEvents.cdEventAsJson(cdEvent);
+        JsonNode cdEventJsonNode = objectMapper.readTree(cdEventJson);
+        JsonNode cdEventContextNode = cdEventJsonNode.get("context");
+        JsonNode cdEventSubjectNode = cdEventJsonNode.get("subject");
+
+        //validates CDEvent against schema
+        assertTrue(CDEvents.validateCDEvent(cdEvent));
+
+        //assert context and subject mandatory fields
+        assertThat(cdEventContextNode.get("type").asText()).isEqualTo(expectedContextNode.get("type").asText());
+        assertThat(cdEventContextNode.get("source").asText()).isEqualTo(expectedContextNode.get("source").asText());
+        assertEquals(expectedSubjectNode, cdEventSubjectNode);
+        assertThat(cdEventSubjectNode.get("id").asText()).isEqualTo(expectedSubjectNode.get("id").asText());
+        assertThat(cdEventSubjectNode.get("type").asText()).isEqualTo(expectedSubjectNode.get("type").asText());
+        assertThat(cdEventSubjectNode.get("content").get("pipelineName").asText()).isEqualTo(expectedSubjectNode.get("content").get("pipelineName").asText());
+        assertThat(cdEventSubjectNode.get("content").get("url").asText()).isEqualTo(expectedSubjectNode.get("content").get("url").asText());
+
+        //assert Optional field Subject Source is set to null
+        assertThat(cdEventSubjectNode.get("source")).isEqualTo(null);
+
+    }
+
 
     @Test
     void createTaskRunStartedEventAsCloudEvent() {
@@ -189,6 +304,44 @@ void testInvalidTaskRunStartedEventWithNoSubject() {
         assertThat(exception.getMessage()).isEqualTo(expectedError);
     }
 
+    @Test
+    void createTaskRunStartedEventJsonWithOptionalFieldsUnset() throws IOException {
+        InputStream inputStream = getClass().getResourceAsStream("/taskrun_started_optional.json");
+
+        JsonNode expectedJsonNode = objectMapper.readTree(inputStream);
+        JsonNode expectedContextNode = expectedJsonNode.get("context");
+        JsonNode expectedSubjectNode = expectedJsonNode.get("subject");
+
+        TaskRunStartedCDEvent cdEvent =  new TaskRunStartedCDEvent();
+        cdEvent.setSource(URI.create(expectedContextNode.get("source").asText()));
+
+        cdEvent.setSubjectId(expectedSubjectNode.get("id").asText());
+        cdEvent.setSubjectPipelineRunId(expectedSubjectNode.get("content").get("pipelineRun").get("id").asText());
+
+        String cdEventJson = CDEvents.cdEventAsJson(cdEvent);
+        JsonNode cdEventJsonNode = objectMapper.readTree(cdEventJson);
+        JsonNode cdEventContextNode = cdEventJsonNode.get("context");
+        JsonNode cdEventSubjectNode = cdEventJsonNode.get("subject");
+
+        //validates CDEvent against schema
+        assertTrue(CDEvents.validateCDEvent(cdEvent));
+
+        //assert context and subject mandatory fields
+        assertThat(cdEventContextNode.get("type").asText()).isEqualTo(expectedContextNode.get("type").asText());
+        assertThat(cdEventContextNode.get("source").asText()).isEqualTo(expectedContextNode.get("source").asText());
+        assertEquals(expectedSubjectNode, cdEventSubjectNode);
+        assertThat(cdEventSubjectNode.get("id").asText()).isEqualTo(expectedSubjectNode.get("id").asText());
+        assertThat(cdEventSubjectNode.get("type").asText()).isEqualTo(expectedSubjectNode.get("type").asText());
+        assertThat(cdEventSubjectNode.get("content").get("pipelineRun").get("id").asText()).isEqualTo(expectedSubjectNode.get("content").get("pipelineRun").get("id").asText());
+
+        //assert Optional fields Subject Source, Content taskName, URL and pipelineRun Source are set to null
+        assertThat(cdEventSubjectNode.get("source")).isEqualTo(null);
+        assertThat(cdEventSubjectNode.get("content").get("taskName")).isEqualTo(null);
+        assertThat(cdEventSubjectNode.get("content").get("url")).isEqualTo(null);
+        assertThat(cdEventSubjectNode.get("content").get("pipelineRun").get("source")).isEqualTo(null);
+
+    }
+
     @Test
     void createTaskRunFinishedEventAsCloudEvent() {
 
@@ -215,6 +368,45 @@ void createTaskRunFinishedEventAsCloudEvent() {
         assertThat(ceDataJson).isEqualTo(cdEventJson);
     }
 
+    @Test
+    void createTaskRunFinishedEventJsonWithOptionalFieldsUnset() throws IOException {
+
+        InputStream inputStream = getClass().getResourceAsStream("/taskrun_finished_optional.json");
+
+        JsonNode expectedJsonNode = objectMapper.readTree(inputStream);
+        JsonNode expectedContextNode = expectedJsonNode.get("context");
+        JsonNode expectedSubjectNode = expectedJsonNode.get("subject");
+
+        TaskRunFinishedCDEvent cdEvent =  new TaskRunFinishedCDEvent();
+        cdEvent.setSource(URI.create(expectedContextNode.get("source").asText()));
+        cdEvent.setSubjectId(expectedSubjectNode.get("id").asText());
+        cdEvent.setSubjectPipelineRunId(expectedSubjectNode.get("content").get("pipelineRun").get("id").asText());
+
+        String cdEventJson = CDEvents.cdEventAsJson(cdEvent);
+        JsonNode cdEventJsonNode = objectMapper.readTree(cdEventJson);
+        JsonNode cdEventContextNode = cdEventJsonNode.get("context");
+        JsonNode cdEventSubjectNode = cdEventJsonNode.get("subject");
+
+        //validates CDEvent against schema
+        assertTrue(CDEvents.validateCDEvent(cdEvent));
+
+        //assert context and subject mandatory fields
+        assertThat(cdEventContextNode.get("type").asText()).isEqualTo(expectedContextNode.get("type").asText());
+        assertThat(cdEventContextNode.get("source").asText()).isEqualTo(expectedContextNode.get("source").asText());
+        assertEquals(expectedSubjectNode, cdEventSubjectNode);
+        assertThat(cdEventSubjectNode.get("id").asText()).isEqualTo(expectedSubjectNode.get("id").asText());
+        assertThat(cdEventSubjectNode.get("type").asText()).isEqualTo(expectedSubjectNode.get("type").asText());
+        assertThat(cdEventSubjectNode.get("content").get("pipelineRun").get("id").asText()).isEqualTo(expectedSubjectNode.get("content").get("pipelineRun").get("id").asText());
+
+        //assert Optional fields Subject Source, Content taskName, URL, outcome, errors and pipelineRun Source are set to null
+        assertThat(cdEventSubjectNode.get("source")).isEqualTo(null);
+        assertThat(cdEventSubjectNode.get("content").get("taskName")).isEqualTo(null);
+        assertThat(cdEventSubjectNode.get("content").get("url")).isEqualTo(null);
+        assertThat(cdEventSubjectNode.get("content").get("outcome")).isEqualTo(null);
+        assertThat(cdEventSubjectNode.get("content").get("errors")).isEqualTo(null);
+        assertThat(cdEventSubjectNode.get("content").get("pipelineRun").get("source")).isEqualTo(null);
+    }
+
     @Test
     void testInvalidTaskRunFinishedEventWithNoSubject() {
         TaskRunFinishedCDEvent cdEvent =  new TaskRunFinishedCDEvent();

src/test/resources/pipelinerun_finished_optional.json

@@ -0,0 +1,18 @@
+{
+  "context": {
+    "id": "123456789",
+    "type": "dev.cdevents.pipelinerun.finished.0.1.0",
+    "source": "http://dev.cdevents",
+    "version": "0.1.2",
+    "timestamp": "2023-05-24T11:17:06Z"
+  },
+  "customData": {
+  },
+  "customDataContentType": "application/json",
+  "subject": {
+    "id": "/dev/pipeline/run/subject",
+    "type": "PIPELINERUN",
+    "content": {
+    }
+  }
+}

src/test/resources/pipelinerun_queued_optional.json

@@ -0,0 +1,18 @@
+{
+  "context": {
+    "id": "dc0bf5f5-f2e4-44c3-b9a6-1f0cf51b050b",
+    "type": "dev.cdevents.pipelinerun.queued.0.1.0",
+    "source": "http://dev.cdevents",
+    "version": "0.1.2",
+    "timestamp": "2023-05-24T18:34:41Z"
+  },
+  "customData": {
+  },
+  "customDataContentType": "application/json",
+  "subject": {
+    "id": "/dev/pipeline/run/subject",
+    "type": "PIPELINERUN",
+    "content": {
+    }
+  }
+}

src/test/resources/pipelinerun_started_optional.json

@@ -0,0 +1,20 @@
+{
+  "context": {
+    "id": "cbde772c-17ad-490d-aea0-41fb060d1483",
+    "type": "dev.cdevents.pipelinerun.started.0.1.0",
+    "source": "http://dev.cdevents",
+    "version": "0.1.2",
+    "timestamp": "2023-05-24T18:48:12Z"
+  },
+  "customData": {
+  },
+  "customDataContentType": "application/json",
+  "subject": {
+    "id": "/dev/pipeline/run/subject",
+    "type": "PIPELINERUN",
+    "content": {
+      "pipelineName": "test-pipeline-started",
+      "url": "http://dev/pipeline/url"
+    }
+  }
+}

src/test/resources/taskrun_finished_optional.json

@@ -0,0 +1,21 @@
+{
+  "context": {
+    "id": "49e16403-c5b5-4e2a-9540-160787459a21",
+    "type": "dev.cdevents.taskrun.finished.0.1.0",
+    "source": "http://dev.cdevents",
+    "version": "0.1.2",
+    "timestamp": "2023-05-24T19:20:57Z"
+  },
+  "customData": {
+  },
+  "customDataContentType": "application/json",
+  "subject": {
+    "id": "/dev/task/run/subject",
+    "type": "TASKRUN",
+    "content": {
+      "pipelineRun": {
+        "id": "/dev/pipeline/run/subject"
+      }
+    }
+  }
+}

src/test/resources/taskrun_started_optional.json

@@ -0,0 +1,21 @@
+{
+  "context": {
+    "id": "f75eb164-947c-4827-9036-9ec7fda38873",
+    "type": "dev.cdevents.taskrun.started.0.1.0",
+    "source": "http://dev.cdevents",
+    "version": "0.1.2",
+    "timestamp": "2023-05-24T19:16:11Z"
+  },
+  "customData": {
+  },
+  "customDataContentType": "application/json",
+  "subject": {
+    "id": "/dev/task/run/subject",
+    "type": "TASKRUN",
+    "content": {
+      "pipelineRun": {
+        "id": "/dev/pipeline/run/subject"
+      }
+    }
+  }
+}