feat: number precision (#661)

* feat: number precision

* feat: add test cases

Co-authored-by: chenos <chenlinxh@gmail.com>

packages/core/client/src/schema-component/antd/input-number/ReadPretty.tsx

@@ -5,16 +5,24 @@ import { toFixed } from 'rc-input-number/lib/utils/MiniDecimal';
 import { getNumberPrecision } from 'rc-input-number/lib/utils/numberUtil';
 import React from 'react';
 
+export function toFixedByStep(value: any, step: string | number) {
+  if (typeof value  === 'undefined' || value === null || value === '') {
+    return '';
+  }
+  const precision = getNumberPrecision(step);
+  // return parseFloat(String(value)).toFixed(precision);
+  return toFixed(String(value), '.', precision);
+}
+
 export const ReadPretty: React.FC<InputProps & InputNumberProps> = (props: any) => {
   const { step, value, addonBefore, addonAfter } = props;
   if (!isValid(props.value)) {
     return <div></div>;
   }
-  const precision = Math.max(getNumberPrecision(String(value)), getNumberPrecision(step));
   return (
     <div className={'nb-read-pretty-input-number'}>
       {addonBefore}
-      {toFixed(String(value), '.', precision)}
+      {toFixedByStep(value, step)}
       {addonAfter}
     </div>
   );

packages/core/client/src/schema-component/antd/input-number/__tests__/toFixedByStep.test.ts

@@ -0,0 +1,30 @@
+import { toFixedByStep } from '../ReadPretty';
+
+describe('toFixedByStep', () => {
+  it('less than precision', () => {
+    expect(toFixedByStep('1.1', '1.00')).toEqual('1.10');
+    expect(toFixedByStep('1.23', '1.00000')).toEqual('1.23000');
+  });
+
+  it('large than precision', () => {
+    expect(toFixedByStep('1.234', '1.00')).toEqual('1.23');
+    expect(toFixedByStep('1.235', '1.00')).toEqual('1.24');
+    expect(toFixedByStep('1.238', '1.00')).toEqual('1.24');
+    expect(toFixedByStep('1.15', '1.0')).toEqual('1.2');
+    expect(toFixedByStep('0.15', '1.0')).toEqual('0.2');
+
+    // Integer
+    expect(toFixedByStep('1.238', 1)).toEqual('1');
+    expect(toFixedByStep('1.5', 1)).toEqual('2');
+  });
+
+  it('should return "" when input is ""/null/undefined', () => {
+    expect(toFixedByStep('', '1.00')).toEqual('');
+    expect(toFixedByStep(null, '1.00')).toEqual('');
+    expect(toFixedByStep(undefined, '1.00')).toEqual('');
+  });
+
+  it('negative', () => {
+    expect(toFixedByStep('-77.88', '1.0')).toEqual('-77.9');
+  });
+});