Improve callCloudCode mutation to receive a CloudCodeFunction enum instead of a String (#6029)

* Add listing test

* Improvements

* Fixinf package.json

* Fix package.json

* Fix tests

spec/ParseGraphQLServer.spec.js

@@ -5177,19 +5177,23 @@ describe('ParseGraphQLServer', () => {
 
       describe('Functions Mutations', () => {
         it('can be called', async () => {
-          Parse.Cloud.define('hello', async () => {
-            return 'Hello world!';
-          });
+          try {
+            Parse.Cloud.define('hello', async () => {
+              return 'Hello world!';
+            });
 
-          const result = await apolloClient.mutate({
-            mutation: gql`
-              mutation CallFunction {
-                callCloudCode(functionName: "hello")
-              }
-            `,
-          });
+            const result = await apolloClient.mutate({
+              mutation: gql`
+                mutation CallFunction {
+                  callCloudCode(functionName: hello)
+                }
+              `,
+            });
 
-          expect(result.data.callCloudCode).toEqual('Hello world!');
+            expect(result.data.callCloudCode).toEqual('Hello world!');
+          } catch (e) {
+            handleError(e);
+          }
         });
 
         it('can throw errors', async () => {
@@ -5201,7 +5205,7 @@ describe('ParseGraphQLServer', () => {
             await apolloClient.mutate({
               mutation: gql`
                 mutation CallFunction {
-                  callCloudCode(functionName: "hello")
+                  callCloudCode(functionName: hello)
                 }
               `,
             });
@@ -5302,7 +5306,7 @@ describe('ParseGraphQLServer', () => {
           apolloClient.mutate({
             mutation: gql`
               mutation CallFunction($params: Object) {
-                callCloudCode(functionName: "hello", params: $params)
+                callCloudCode(functionName: hello, params: $params)
               }
             `,
             variables: {
@@ -5310,6 +5314,94 @@ describe('ParseGraphQLServer', () => {
             },
           });
         });
+
+        it('should list all functions in the enum type', async () => {
+          try {
+            Parse.Cloud.define('a', async () => {
+              return 'hello a';
+            });
+
+            Parse.Cloud.define('b', async () => {
+              return 'hello b';
+            });
+
+            Parse.Cloud.define('_underscored', async () => {
+              return 'hello _underscored';
+            });
+
+            Parse.Cloud.define('contains1Number', async () => {
+              return 'hello contains1Number';
+            });
+
+            const functionEnum = (await apolloClient.query({
+              query: gql`
+                query ObjectType {
+                  __type(name: "CloudCodeFunction") {
+                    kind
+                    enumValues {
+                      name
+                    }
+                  }
+                }
+              `,
+            })).data['__type'];
+            expect(functionEnum.kind).toEqual('ENUM');
+            expect(
+              functionEnum.enumValues.map(value => value.name).sort()
+            ).toEqual(['_underscored', 'a', 'b', 'contains1Number']);
+          } catch (e) {
+            handleError(e);
+          }
+        });
+
+        it('should warn functions not matching GraphQL allowed names', async () => {
+          try {
+            spyOn(
+              parseGraphQLServer.parseGraphQLSchema.log,
+              'warn'
+            ).and.callThrough();
+
+            Parse.Cloud.define('a', async () => {
+              return 'hello a';
+            });
+
+            Parse.Cloud.define('double-barrelled', async () => {
+              return 'hello b';
+            });
+
+            Parse.Cloud.define('1NumberInTheBeggning', async () => {
+              return 'hello contains1Number';
+            });
+
+            const functionEnum = (await apolloClient.query({
+              query: gql`
+                query ObjectType {
+                  __type(name: "CloudCodeFunction") {
+                    kind
+                    enumValues {
+                      name
+                    }
+                  }
+                }
+              `,
+            })).data['__type'];
+            expect(functionEnum.kind).toEqual('ENUM');
+            expect(
+              functionEnum.enumValues.map(value => value.name).sort()
+            ).toEqual(['a']);
+            expect(
+              parseGraphQLServer.parseGraphQLSchema.log.warn.calls
+                .all()
+                .map(call => call.args[0])
+                .sort()
+            ).toEqual([
+              'Function 1NumberInTheBeggning could not be added to the auto schema because GraphQL names must match /^[_a-zA-Z][_a-zA-Z0-9]*$/.',
+              'Function double-barrelled could not be added to the auto schema because GraphQL names must match /^[_a-zA-Z][_a-zA-Z0-9]*$/.',
+            ]);
+          } catch (e) {
+            handleError(e);
+          }
+        });
       });
 
       describe('Data Types', () => {