From 6b1f7c9b985c5f100fb00b44451f634b0b438753 Mon Sep 17 00:00:00 2001
From: Jan Amann <jan@amann.me>
Date: Fri, 5 May 2017 15:02:58 +0200
Subject: [PATCH] Reduce calls to `onChange` of the parent form.

---
 src/FormsyText.jsx      |  2 +-
 test/test.FormsyText.js | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/FormsyText.jsx b/src/FormsyText.jsx
index 1a9fd78..a1bb326 100644
--- a/src/FormsyText.jsx
+++ b/src/FormsyText.jsx
@@ -47,7 +47,7 @@ const FormsyText = React.createClass({
 
       if (isValueChanging || this.props.defaultValue === this.getValue()) {
         this.setState({ value, isValid });
-        this.setValue(value);
+        if (this.getValue() !== value) this.setValue(value);
       }
     }
   },
diff --git a/test/test.FormsyText.js b/test/test.FormsyText.js
index 2b1dd1e..79409b3 100644
--- a/test/test.FormsyText.js
+++ b/test/test.FormsyText.js
@@ -234,6 +234,20 @@ describe('FormsyText', () => {
         formValues = formsyForm.getCurrentValues();
         expect(formValues.text).to.eq('some text');
       });
+
+      it('calls onChange once per text update', () => {
+        const calls = [];
+        const { parent, formsyTextWrapper } = makeTestParent({
+          onChange: (...args) => calls.push(args),
+          value: 'initial',
+        });
+
+        const inputDOM = formsyTextWrapper.find('input').node;
+        inputDOM.value = 'updated';
+        parent.setState({ value: 'updated' });
+
+        expect(calls.length).to.eq(1);
+      });
     });
 
     describe('resetting to', () => {