Files
30-seconds-of-code/test/toSnakeCase.test.js
2018-10-19 20:18:00 +03:00

49 lines
1.9 KiB
JavaScript

const expect = require('expect');
const {toSnakeCase} = require('./_30s.js');
test('toSnakeCase is a Function', () => {
expect(toSnakeCase).toBeInstanceOf(Function);
});
test("toSnakeCase('camelCase') returns camel_case", () => {
expect(toSnakeCase('camelCase')).toBe('camel_case');
});
test("toSnakeCase('some text') returns some_text", () => {
expect(toSnakeCase('some text')).toBe('some_text');
});
test("toSnakeCase('some-mixed_string With spaces_underscores-and-hyphens') returns some_mixed_string_with_spaces_underscores_and_hyphens", () => {
expect(toSnakeCase('some-mixed_string With spaces_underscores-and-hyphens')).toBe(
'some_mixed_string_with_spaces_underscores_and_hyphens'
);
});
test("toSnakeCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML') returns i_am_listening_to_fm_while_loading_different_url_on_my_browser_and_also_editing_some_xml_and_html", () => {
expect(
toSnakeCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML')
).toBe(
'i_am_listening_to_fm_while_loading_different_url_on_my_browser_and_also_editing_some_xml_and_html'
);
});
test('toSnakeCase() returns undefined', () => {
expect(toSnakeCase()).toBe(undefined);
});
test('toSnakeCase([]) throws an error', () => {
expect(() => {
toSnakeCase([]);
}).toThrow();
});
test('toSnakeCase({}) throws an error', () => {
expect(() => {
toSnakeCase({});
}).toThrow();
});
test('toSnakeCase(123) throws an error', () => {
expect(() => {
toSnakeCase(123);
}).toThrow();
});
let start = new Date().getTime();
toSnakeCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML');
let end = new Date().getTime();
test('toSnakeCase(IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML) takes less than 2s to run', () => {
expect(end - start < 2000).toBeTruthy();
});