40 lines
1.0 KiB
TypeScript
40 lines
1.0 KiB
TypeScript
import { getClientInitials } from "../clients";
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describe("getClientInitials", () => {
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it("returns substring if one name provided", () => {
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const result = getClientInitials("Alan");
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expect(result).toBe("AL");
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});
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it("returns initials", () => {
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const result = getClientInitials("John Doe");
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expect(result).toBe("JD");
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});
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it("returns correct initials if many names provided", () => {
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const result = getClientInitials("John Alan Doe");
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expect(result).toBe("JD");
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});
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it("returns single initial if 1 letter provided", () => {
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const result = getClientInitials("z");
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expect(result).toBe("Z");
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});
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it("trims trailing whitespace", () => {
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const result = getClientInitials(" q ");
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expect(result).toBe("Q");
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});
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it('returns "?" if falsey value provided', () => {
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let result = getClientInitials("");
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expect(result).toBe("?");
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result = getClientInitials(undefined);
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expect(result).toBe("?");
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result = getClientInitials(null);
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expect(result).toBe("?");
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});
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});
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