hang lv

## 提问前应该做的事 请确保提问前做了以下事，将完成的项目的 `[]` 改为 `[x]`： - [x] 我已通读过 [README](https://github.com/ecomfe/echarts-for-weixin/blob/master/README.md) - [x] 我已阅读过 [FAQ](https://github.com/ecomfe/echarts-for-weixin/issues?utf8=%E2%9C%93&q=is%3Aissue+label%3Afaq+) ## 需提供的信息 将符合项的 `[]` 改为 `[x]`，并补充需要的信息： ### 简单描述问题： 对于yAxis.splitArea.areaStyle. color,我设置为 areaStyle: { color: [ "rgba(255,255,255,0.9)", "rgba(255,255,255,0.9)",...

Fixes ISSUE#xxx Changes: 1. Provide correct error msg if chart's value template example not found

ref to #181 # Description Add tests for all runnable examples. Take the ret_code of client.py as the test result, so a little changes to the existing code are necessary.