test/translator.test.js

const { removeCodeAndComment } = require('../src/util');
const { detectEnglish } = require('../src/translator');

const str = `
### What problem does this feature solve?
I wish to show chemical structure / latex formula or some other complex content in a tooltip canvas.
I have the function (based on zrender) to draw these objects and I wish there is an API hooker to help me.
An extra AJAX request may be required to fetch the more data during the render.

### What does the proposed API look like?
\`\`\`
tooltip: {
    size: [150, 50], // The tooltip size prepared for render
    onRender: function (
        data,       // The data of the selected point
        render,     // The echart/zrender object to draw on
        boundRect   // The bound rectangle to draw in
    ) {
        axios.get("/some.api?id="   data["id"]).then(function (response) {
            // Do some drawing code here.
        })
    }
}
\`\`\`

<!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->
<!-- This issue is in English. DO NOT REMOVE -->`;

const str2 = `
### What problem does this feature solve?

比如 series-line.itemStyle. color 可以是一个函数，于是就可以动态修改每一个折线点的颜色。能不能让series-line.lineStyle. color 也可以是一个函数，这样就能动态修改每一小段折线的颜色，或者将它隐藏起来。

### What does the proposed API look like?
series-line.lineStyle. color 可以是一个函数，能动态修改每一小段折线的颜色，或者将它隐藏起来。

<!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->`;

const str3 = `Export types for formatter callback params`;

describe('translator and language test', () => {
    it('The language should be English', () => {
        const c = removeCodeAndComment(str);
        expect(detectEnglish(c)).toEqual(true);
    });

    it('The language should be not English', () => {
        const c = removeCodeAndComment(str2);
        expect(detectEnglish(c)).toEqual(false);
    });

    it('The language should be English', () => {
        const c = removeCodeAndComment(str3);
        expect(detectEnglish(c)).toEqual(true);
    });
});