Test fixed

Author: algenty

spec/global_class.test.ts

@@ -98,12 +98,13 @@ describe('Test Global $GF utils', () => {
     });
 
     test('should be evaluate', () => {
+      variables.set(key, value);
       expect(variables.eval('${_value}*2')).toBe(24690);
     });
 
     test('Should be null after remove key ' + key, () => {
-      variable.unset(key);
-      expect(variable.get(key)).toBe(undefined);
+      variables.unset(key);
+      expect(variables.get(key)).toBe(undefined);
     });
 
     test('Static should ', () => {

src/globals_class.ts

@@ -438,7 +438,7 @@ export class GFVariables {
   replaceText(text: string): string {
     try {
       let templateSrv = GFPlugin.getTemplateSrv();
-      text = templateSrv !== undefined ? templateSrv.replace(text) : text;
+      text = templateSrv && templateSrv.replace ? templateSrv.replace(text) : text;
       for (let [key, value] of this._variables) {
         text = text.replace('${' + key + '}', value);
       }