fix: prevent setRawValue to convert 0 to empty string

Closes #113

src/finput.js

@@ -118,12 +118,12 @@ class Finput {
    */
   setRawValue(val) {
     let value;
-    if (!val) {
-      value = '';
-    } else if (typeof val === 'number' && !isNaN(val)) {
+    if (typeof val === 'number' && !isNaN(val)) {
       value = helpers.rawToFormatted(val, this.options);
     } else if (typeof val === 'string') {
       value = val;
+    } else if (!val) {
+      value = '';
     } else {
       return;
     }

test/jestConfig.json

@@ -1,7 +1,8 @@
 {
   "setupTestFrameworkScriptFile": "./setupTests.js",
   "testMatch": [
-    "**/specs/**/*.js"
+    "**/specs/**/*.js",
+    "**/unit/**/*.js"
   ],
   "globals": {
     "__baseUrl__": "http://localhost:3000"

test/unit/setRawValue.js

@@ -0,0 +1,22 @@
+import finput from '../../src/finput';
+
+describe('setRawValue', () => {
+
+    let element;
+    let destroy;
+
+    beforeEach(() => {
+        element = document.createElement('input');
+        destroy = finput(element);
+    });
+
+    afterEach(() => {
+        destroy();
+    });
+
+    it('when passed 0 sets value 0', () => {
+        element.setRawValue(0);
+        expect(element.value).toBe('0.00');
+    });
+
+});