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feat: add ResourceLink content type and ResourceContent interface (#341)

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- Add ResourceContent interface with common resource metadata methods
- Implement ResourceContent in existing Resource class
- Add new ResourceLink record class implementing Content and ResourceContent
- Update Content interface to support ResourceLink with "resource_link" type (breaking!)
- Add tests for ResourceLink serialization/deserialization
- Update test expectations to include new resource_link type

Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
This commit is contained in:
bzsurbhi 2025-06-25 13:21:41 -07:00 • committed by Christian Tzolov
commit 2f55dd0015
1 changed files with 146 additions and 9 deletions
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39
mcp/src/test/java/io/modelcontextprotocol/spec/McpSchemaTests.java
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@ -3,23 +3,22 @@
*/
package io.modelcontextprotocol.spec;
import static net.javacrumbs.jsonunit.assertj.JsonAssertions.assertThatJson;
import static net.javacrumbs.jsonunit.assertj.JsonAssertions.json;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import org.junit.jupiter.api.Test;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.exc.InvalidTypeIdException;
import io.modelcontextprotocol.spec.McpSchema.TextResourceContents;
import static net.javacrumbs.jsonunit.assertj.JsonAssertions.assertThatJson;
import static net.javacrumbs.jsonunit.assertj.JsonAssertions.json;
import net.javacrumbs.jsonunit.core.Option;
/**
@ -60,7 +59,7 @@ public class McpSchemaTests {
{"type":"WRONG","text":"XXX"}""", McpSchema.TextContent.class))
.isInstanceOf(InvalidTypeIdException.class)
.hasMessageContaining(
"Could not resolve type id 'WRONG' as a subtype of `io.modelcontextprotocol.spec.McpSchema$TextContent`: known type ids = [audio, image, resource, text]");
"Could not resolve type id 'WRONG' as a subtype of `io.modelcontextprotocol.spec.McpSchema$TextContent`: known type ids = [audio, image, resource, resource_link, text]");
}
@Test
@ -168,6 +167,34 @@ public class McpSchemaTests {
.isEqualTo("base64encodedblob");
}
@Test
void testResourceLink() throws Exception {
McpSchema.ResourceLink resourceLink = new McpSchema.ResourceLink("main.rs", "file:///project/src/main.rs",
"Primary application entry point", "text/x-rust", null, null);
String value = mapper.writeValueAsString(resourceLink);
assertThatJson(value).when(Option.IGNORING_ARRAY_ORDER)
.when(Option.IGNORING_EXTRA_ARRAY_ITEMS)
.isObject()
.isEqualTo(
json("""
{"type":"resource_link","name":"main.rs","uri":"file:///project/src/main.rs","description":"Primary application entry point","mimeType":"text/x-rust"}"""));
}
@Test
void testResourceLinkDeserialization() throws Exception {
McpSchema.ResourceLink resourceLink = mapper.readValue(
"""
{"type":"resource_link","name":"main.rs","uri":"file:///project/src/main.rs","description":"Primary application entry point","mimeType":"text/x-rust"}""",
McpSchema.ResourceLink.class);
assertThat(resourceLink).isNotNull();
assertThat(resourceLink.type()).isEqualTo("resource_link");
assertThat(resourceLink.name()).isEqualTo("main.rs");
assertThat(resourceLink.uri()).isEqualTo("file:///project/src/main.rs");
assertThat(resourceLink.description()).isEqualTo("Primary application entry point");
assertThat(resourceLink.mimeType()).isEqualTo("text/x-rust");
}
// JSON-RPC Message Types Tests
@Test