From 800c3ee1a40dbdb8afe59464b0b7a2501590b60e Mon Sep 17 00:00:00 2001
From: Luis Correia <hello@luisc.pt>
Date: Tue, 2 Apr 2019 22:47:52 +0100
Subject: [PATCH] fix(widget-number): allow zero as value (#2261)

---
 .../netlify-cms-widget-number/src/NumberControl.js    |  2 +-
 .../src/__tests__/number.spec.js                      | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/packages/netlify-cms-widget-number/src/NumberControl.js b/packages/netlify-cms-widget-number/src/NumberControl.js
index 1caa9218..96ddd6e6 100644
--- a/packages/netlify-cms-widget-number/src/NumberControl.js
+++ b/packages/netlify-cms-widget-number/src/NumberControl.js
@@ -100,7 +100,7 @@ export default class NumberControl extends React.Component {
         className={classNameWrapper}
         onFocus={setActiveStyle}
         onBlur={setInactiveStyle}
-        value={value || ''}
+        value={value || (value === 0 ? value : '')}
         step={step}
         min={min}
         max={max}
diff --git a/packages/netlify-cms-widget-number/src/__tests__/number.spec.js b/packages/netlify-cms-widget-number/src/__tests__/number.spec.js
index eb4afa6e..85884bf3 100644
--- a/packages/netlify-cms-widget-number/src/__tests__/number.spec.js
+++ b/packages/netlify-cms-widget-number/src/__tests__/number.spec.js
@@ -119,4 +119,15 @@ describe('Number widget', () => {
     expect(onChangeSpy).toHaveBeenCalledTimes(1);
     expect(onChangeSpy).toHaveBeenCalledWith(parseInt(testValue, 10));
   });
+
+  it('should allow 0 as a value', () => {
+    const field = fromJS(fieldSettings);
+    const testValue = 0;
+    const { input } = setup({ field });
+
+    fireEvent.focus(input);
+    fireEvent.change(input, { target: { value: String(testValue) } });
+
+    expect(input.value).toBe('0');
+  });
 });