Extract test helpers

Author: simonrw

__tests__/helpers.js

@@ -0,0 +1,54 @@
+"use strict";;
+
+const { AppSyncClient, EvaluateCodeCommand } = require("@aws-sdk/client-appsync");
+const { util } = require("..");
+
+let client = null;
+
+const runOnAWS = async (s) => {
+  if (!client) {
+    client = new AppSyncClient();
+  }
+
+  const code = `
+  import { util } from '@aws-appsync/utils';
+
+  export function request(ctx) {
+    return ${s};
+  }
+
+  export function response(ctx) {
+  }
+  `;
+
+  const command = new EvaluateCodeCommand({
+    code,
+    context: "{}",
+    function: "request",
+    runtime: {
+      name: "APPSYNC_JS",
+      runtimeVersion: "1.0.0",
+    },
+  });
+
+  const result = await client.send(command);
+  try {
+    return JSON.parse(result.evaluationResult);
+  } catch (e) {
+    console.error("invalid json", result);
+  }
+}
+
+// If TEST_TARGET is AWS_CLOUD then run the check against AWS. Otherwise, run locally.
+const checkValid = async (s) => {
+  let result;
+  if (process.env.TEST_TARGET === "AWS_CLOUD") {
+    result = await runOnAWS(s);
+  } else {
+    result = eval(s);
+  }
+  expect(result).toMatchSnapshot();
+}
+
+
+module.exports = { checkValid };

__tests__/index.test.js

@@ -2,10 +2,8 @@
   * Helpers definition from https://docs.aws.amazon.com/appsync/latest/devguide/dynamodb-helpers-in-util-dynamodb-js.html
 */
 
-const { util } = require("..");
-const { AppSyncClient, EvaluateCodeCommand } = require("@aws-sdk/client-appsync");
+const { checkValid } = require("./helpers.js");
 
-let client = null;
 
 describe("dynamodb helpers", () => {
   describe.skip("toDynamoDB", () => {
@@ -97,49 +95,3 @@ describe("dynamodb helpers", () => {
     );
   });
 });
-
-const runOnAWS = async (s) => {
-  if (!client) {
-    client = new AppSyncClient();
-  }
-
-  const code = `
-  import { util } from '@aws-appsync/utils';
-
-  export function request(ctx) {
-    return ${s};
-  }
-
-  export function response(ctx) {
-  }
-  `;
-
-  const command = new EvaluateCodeCommand({
-    code,
-    context: "{}",
-    function: "request",
-    runtime: {
-      name: "APPSYNC_JS",
-      runtimeVersion: "1.0.0",
-    },
-  });
-
-  const result = await client.send(command);
-  try {
-    return JSON.parse(result.evaluationResult);
-  } catch (e) {
-    console.error("invalid json", result);
-  }
-}
-
-// If TEST_TARGET is AWS_CLOUD then run the check against AWS. Otherwise, run locally.
-const checkValid = async (s) => {
-  let result;
-  if (process.env.TEST_TARGET === "AWS_CLOUD") {
-    result = await runOnAWS(s);
-  } else {
-    result = eval(s);
-  }
-  expect(result).toMatchSnapshot();
-}
-

jest.config.js

@@ -1,5 +1,6 @@
 const config = {
   testEnvironment: 'node',
+  testMatch: ["**/__tests__/*test.js"],
 };
 
 export default config;