implement executeAsync to allow for promise based execution dozoisch#72

Author: stemsmit

src/recaptcha.js

@@ -34,6 +34,14 @@ export default class ReCAPTCHA extends React.Component {
     }
   }
 
+  executeAsync() {
+    return new Promise((resolve, reject) => {
+      this.executionResolve = resolve;
+      this.executionReject = reject;
+      this.execute();
+    })
+  }
+
   reset() {
     if (this.props.grecaptcha && this._widgetId !== undefined) {
       this.props.grecaptcha.reset(this._widgetId);
@@ -49,11 +57,25 @@ export default class ReCAPTCHA extends React.Component {
   }
 
   handleErrored() {
-    if (this.props.onErrored) this.props.onErrored();
+    if (this.props.onErrored) {
+      this.props.onErrored();
+    }
+    if(this.executionReject){
+      this.executionReject();
+      delete this.executionResolve;
+      delete this.executionReject;
+    }
   }
-
+  
   handleChange(token) {
-    if (this.props.onChange) this.props.onChange(token);
+    if (this.props.onChange) {
+      this.props.onChange(token);
+    }
+    if(this.executionResolve) {
+      this.executionResolve(token);
+      delete this.executionReject;
+      delete this.executionResolve;
+    }
   }
 
   explicitRender() {

test/recaptcha.spec.js

@@ -88,6 +88,70 @@ describe("ReCAPTCHA", () => {
     instance._internalRef.current.execute();
     expect(grecaptchaMock.execute).toBeCalledWith(WIDGET_ID);
   });
+  it("executeAsync, should call grecaptcha.execute with the widget id", () => {
+    const WIDGET_ID = "someWidgetId";
+    const grecaptchaMock = {
+      render() {
+        return WIDGET_ID;
+      },
+      execute: jest.fn(),
+    };
+    // wrapping component example that applies a ref to ReCAPTCHA
+    class WrappingComponent extends React.Component {
+      constructor(props) {
+        super(props);
+        this._internalRef = React.createRef();
+      }
+      render() {
+        return (
+          <div>
+            <ReCAPTCHA
+              sitekey="xxx"
+              size="invisible"
+              grecaptcha={grecaptchaMock}
+              onChange={jest.fn()}
+              ref={this._internalRef}
+            />
+          </div>
+        );
+      }
+    }
+    const instance = ReactTestUtils.renderIntoDocument(React.createElement(WrappingComponent));
+    instance._internalRef.current.execute();
+    expect(grecaptchaMock.execute).toBeCalledWith(WIDGET_ID);
+  });
+  it("executeAsync, should return a promise", () => {
+    const WIDGET_ID = "someWidgetId";
+    const grecaptchaMock = {
+      render() {
+        return WIDGET_ID;
+      },
+      execute: jest.fn(),
+    };
+    // wrapping component example that applies a ref to ReCAPTCHA
+    class WrappingComponent extends React.Component {
+      constructor(props) {
+        super(props);
+        this._internalRef = React.createRef();
+      }
+      render() {
+        return (
+          <div>
+            <ReCAPTCHA
+              sitekey="xxx"
+              size="invisible"
+              grecaptcha={grecaptchaMock}
+              onChange={jest.fn()}
+              ref={this._internalRef}
+            />
+          </div>
+        );
+      }
+    }
+    const instance = ReactTestUtils.renderIntoDocument(React.createElement(WrappingComponent));
+    let result = instance._internalRef.current.executeAsync();
+    expect(result).toBeInstanceOf(Promise);
+  });
   describe("Expired", () => {
     it("should call onChange with null when response is expired", () => {
       const WIDGET_ID = "someWidgetId";