test: add test mocks

Author: PolinaFam

superset-frontend/plugins/plugin-chart-echarts/src/BigNumber/BigNumberWithTrendline/transformProps.test.ts

@@ -84,6 +84,19 @@ jest.mock('../../utils/tooltip', () => ({
   getDefaultTooltip: jest.fn(() => ({})),
 }));
 
+jest.mock('../../utils/formatters', () => ({
+  getXAxisFormatter: jest.fn(() => String),
+}));
+
+jest.mock('../../constants', () => ({
+  TIMESERIES_CONSTANTS: {
+    gridOffsetBottom: 20,
+    gridOffsetLeft: 20,
+    gridOffsetRight: 20,
+    gridOffsetTop: 20,
+  },
+}));
+
 describe('BigNumberWithTrendline transformProps', () => {
   const onContextMenu = jest.fn();
   const baseFormData = {