apply more graphql features (#13)

Co-authored-by: rick <LinuxSuRen@users.noreply.github.com>

Author: LinuxSuRen

e2e/test-suite.yaml

@@ -18,7 +18,9 @@ items:
     statusCode: 400
 - name: toLower
   request:
-    api: /lower?text=Hello
+    api: /lower
+    query:
+      text: Hello
     header:
       Authorization: "{{ .param.auth }}"
   expect:
@@ -42,12 +44,26 @@ items:
       Content-Type: application/json
     body: |
       {
-        "query": "query xxx {\n  bookById(id: \"book-1\") {\n    id\n    name\n  }\n}",
-        "operationName": "xxx"
+        "query": "query xxx($id: ID) {\n  bookById(id: $id) {\n    id\n    name\n  }\n}",
+        "operationName": "xxx",
+        "variables": {"id": "book-1"}
       }
   expect:
     bodyFieldsExpect:
       data.bookById.name: Effective Java
+- name: allBooks
+  request:
+    api: /graphql
+    method: POST
+    header:
+      Content-Type: application/json
+    body: |
+      {
+        "query": "query xxx { books { name } }"
+      }
+  expect:
+    verify:
+      - len(data.data.books) >= 3
 - name: queryBookById-not-found
   request:
     api: /graphql
@@ -62,3 +78,13 @@ items:
   expect:
     verify:
       - data.bookById == nil
+- name: addBook
+  request:
+    api: /graphql
+    method: POST
+    header:
+      Content-Type: application/json
+    body: |
+      {
+        "query": "mutation size { addBook(name: \"name\"\n pageCount: 1)}"
+      }

src/main/java/io/github/devopsws/demo/model/Book.java

@@ -1,20 +1,30 @@
 package io.github.devopsws.demo.model;
 
 import java.util.Arrays;
+import java.util.ArrayList;
 import java.util.List;
 
 public record Book (String id, String name, int pageCount, String authorId) {
 
-    private static List<Book> books = Arrays.asList(
+    private static List<Book> books = new ArrayList<Book>(Arrays.asList(
             new Book("book-1", "Effective Java", 416, "author-1"),
             new Book("book-2", "Hitchhiker's Guide to the Galaxy", 208, "author-2"),
             new Book("book-3", "Down Under", 436, "author-3")
-    );
+    ));
 
     public static Book getById(String id) {
         return books.stream()
 				.filter(book -> book.id().equals(id))
 				.findFirst()
 				.orElse(null);
     }
+
+    public static Book[] allBooks() {
+        return books.toArray(new Book[]{});
+    }
+
+    public static int addBook(Book b) {
+        books.add(new Book(books.size()+"", b.name, b.pageCount, b.authorId));
+        return books.size();
+    }
 }

src/main/java/io/github/devopsws/demo/service/GraphQL.java

@@ -2,6 +2,7 @@
 
 import org.springframework.graphql.data.method.annotation.Argument;
 import org.springframework.graphql.data.method.annotation.QueryMapping;
+import org.springframework.graphql.data.method.annotation.MutationMapping;
 import org.springframework.graphql.data.method.annotation.SchemaMapping;
 import org.springframework.stereotype.Controller;
 import io.github.devopsws.demo.model.Book;
@@ -16,4 +17,14 @@ public class GraphQL {
     public Book bookById(@Argument String id) {
         return Book.getById(id);
     }
+
+    @QueryMapping
+    public Book[] books() {
+        return Book.allBooks();
+    }
+
+    @MutationMapping
+    public int addBook(@Argument String name, @Argument int pageCount) {
+        return Book.addBook(new Book("", name, pageCount, ""));
+    }
 }

src/main/resources/graphql/schema.graphqls

@@ -1,5 +1,10 @@
 type Query {
     bookById(id: ID): Book
+    books: [Book]
+}
+
+type Mutation {
+    addBook(name: String, pageCount: Int!): Int
 }
 
 type Book {