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test(expect): check error message of .toBeCloseTo() #6296

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merged 1 commit into from
Jan 23, 2025
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test(expect): check error message of .toBeCloseTo() #6296

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18 changes: 18 additions & 0 deletions expect/_to_be_close_to_test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -39,3 +39,21 @@ Deno.test("expect().toBeCloseTo() throws custom message", () => {
new RegExp(`^${msg}`),
);
});

Deno.test("expect().toBeCloseTo() throws error messages which include expected and actual values", () => {
assertThrows(
() => {
expect(0.2 + 0.11).toBeCloseTo(0.3);
},
AssertionError,
`Expected the value 0.31 to be close to 0.3 (using 2 digits), but it is not`,
);

assertThrows(
() => {
expect(0.2 + 0.1).not.toBeCloseTo(0.3);
},
AssertionError,
`Expected the value 0.30000000000000004 not to be close to 0.3 (using 2 digits), but it is`,
);
});
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