@mcdevsl/superset-ui
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text/typescript
import TimeFormatter, { PREVIEW_TIME } from '@superset-ui/core/src/time-format/TimeFormatter';
describe('TimeFormatter', () => {
describe('new TimeFormatter(config)', () => {
it('requires config.id', () => {
expect(
() =>
// @ts-ignore -- intentionally pass invalid input
new TimeFormatter({
formatFunc: () => 'test',
}),
).toThrow();
});
it('requires config.formatFunc', () => {
expect(
() =>
// @ts-ignore -- intentionally pass invalid input
new TimeFormatter({
id: 'my_format',
}),
).toThrow();
});
});
describe('formatter is also a format function itself', () => {
const formatter = new TimeFormatter({
id: 'year_only',
formatFunc: (value: Date) => `${value.getFullYear()}`,
});
it('returns formatted value', () => {
expect(formatter(PREVIEW_TIME)).toEqual('2017');
});
it('formatter(value) is the same with formatter.format(value)', () => {
const value = PREVIEW_TIME;
expect(formatter(value)).toEqual(formatter.format(value));
});
});
describe('.format(value)', () => {
const formatter = new TimeFormatter({
id: 'year_only',
formatFunc: value => `${value.getFullYear()}`,
});
it('handles null', () => {
expect(formatter.format(null)).toEqual('null');
});
it('handles undefined', () => {
expect(formatter.format(undefined)).toEqual('undefined');
});
it('handles number, treating it as a timestamp', () => {
expect(formatter.format(PREVIEW_TIME.getTime())).toEqual('2017');
});
it('otherwise returns formatted value', () => {
expect(formatter.format(PREVIEW_TIME)).toEqual('2017');
});
});
describe('.preview(value)', () => {
const formatter = new TimeFormatter({
id: 'year_only',
formatFunc: value => `${value.getFullYear()}`,
});
it('returns string comparing value before and after formatting', () => {
const time = new Date(Date.UTC(2018, 10, 21, 22, 11, 44));
expect(formatter.preview(time)).toEqual('Wed, 21 Nov 2018 22:11:44 GMT => 2018');
});
it('uses the default preview value if not specified', () => {
expect(formatter.preview()).toEqual('Tue, 14 Feb 2017 11:22:33 GMT => 2017');
});
});
});