@netdata/charts
Version:
Netdata frontend SDK and chart utilities
71 lines • 3.41 kB
JavaScript
import shorten, { shortForLength } from ".";
describe("shorten", function () {
it("returns string as-is for non-string inputs", function () {
expect(shorten(null)).toBeNull();
expect(shorten(undefined)).toBeUndefined();
expect(shorten(123)).toBe(123);
expect(shorten({})).toEqual({});
});
it("trims whitespace at round 0", function () {
expect(shorten(" test ", 0)).toBe("test");
expect(shorten(" hello world ", 0)).toBe("hello world");
});
it("removes duplicate letters at round 1", function () {
// Functions only work on compound words with separators, not single words
expect(shorten("hello", 1)).toBe("hello");
expect(shorten("testing", 1)).toBe("testing");
expect(shorten("bookkeeper", 1)).toBe("bookkeeper");
});
it("removes middle vowels at round 2", function () {
// Functions only work on compound words with separators, not single words
expect(shorten("hello", 2)).toBe("hello");
expect(shorten("testing", 2)).toBe("testing");
expect(shorten("a", 2)).toBe("a"); // too short
expect(shorten("ab", 2)).toBe("ab"); // too short
expect(shorten("abc", 2)).toBe("abc"); // too short
});
it("keeps numbers intact when removing vowels", function () {
expect(shorten("test123", 2)).toBe("test123"); // contains digit
expect(shorten("hello", 2)).toBe("hello"); // no separators, no transformation
});
it("creates ellipsis in middle for round > 2", function () {
expect(shorten("very long string", 10)).toBe("ver...ing");
expect(shorten("short", 10)).toBe("..."); // short strings get truncated to just ellipsis
});
it("handles compound words with separators for round 1", function () {
expect(shorten("hello-world", 1)).toBe("helo-world"); // removes duplicate 'l'
expect(shorten("bookkeeper-test", 1)).toBe("bokeper-test"); // removes duplicates
});
it("handles compound words with separators for round 2", function () {
expect(shorten("hello-world", 2)).toBe("hllo-world"); // only first part gets transformed
expect(shorten("testing_case", 2)).toBe("tstng_case"); // only first part gets transformed
});
});
describe("shortForLength", function () {
it("returns string as-is for non-string inputs", function () {
expect(shortForLength(null)).toBeNull();
expect(shortForLength(undefined)).toBeUndefined();
expect(shortForLength(123)).toBe(123);
});
it("returns string as-is when under max length", function () {
expect(shortForLength("short", 30)).toBe("short");
expect(shortForLength("medium length", 20)).toBe("medium length");
});
it("progressively shortens long strings", function () {
var longString = "this is a very long string that needs shortening";
var result = shortForLength(longString, 20);
expect(result.length).toBeLessThanOrEqual(20);
expect(result).toBeTruthy();
});
it("uses default max length of 30", function () {
var longString = "this is a very long string that definitely exceeds thirty characters";
var result = shortForLength(longString);
expect(result.length).toBeLessThanOrEqual(30);
});
it("handles extreme shortening with ellipsis", function () {
var veryLongString = "extremely long string with many repeated letters and vowels";
var result = shortForLength(veryLongString, 10);
expect(result.length).toBeLessThanOrEqual(10);
expect(result).toContain("...");
});
});