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This is how mapper function currently works #194

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Merged
merged 2 commits into from
Mar 18, 2023
Merged

This is how mapper function currently works #194

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83fe462
Add tests for mapper function
bijela-gora Mar 11, 2023
e6b76ae
Mark possibly incorrect behaviour
bijela-gora Mar 11, 2023
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93 changes: 93 additions & 0 deletions test/map.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -29,3 +29,96 @@ tape('gamma transfer function', t => {
t.equal(formatHex(brighten('#cc0033')), '#ff0070');
t.end();
});

tape('when mode is null and color is rgb string', t => {
let increaser = mapper(v => v + 0.1, null);

// might be incorrect
t.throws(() => {
increaser('#cc0033');
}, "Cannot read properties of undefined (reading 'channels')");
t.end();
});

tape('when mode is null and color is rgb', t => {
let increaser = mapper(v => v + 0.1, null);
const res = increaser({ mode: 'rgb', r: 0.8, g: 0, b: 0.2 });

// might be incorrect
t.equal(res.mode, null);
t.end();
});

tape('when mode is null and preserve_mode is true', t => {
let increaser = mapper(v => v + 1, null, true);

// might be incorrect
t.throws(
() => {
const res = increaser({ mode: 'rgb', r: 0.8, g: 0, b: 0.2 });
console.log(res);
},
{ message: "Cannot read properties of undefined (reading 'rgb')" }
);
t.end();
});

tape('when mode is undefined and preserve_mode is true', t => {
let decreaseMapper = mapper(v => v - 0.1, undefined, true);
const res = decreaseMapper('#cc0033');
t.equal(res.mode, 'rgb');
t.end();
});

tape('when mode is hsl and preserve_mode is true', t => {
let increaser = mapper(v => v + 0.1, 'hsl', true);
const res = increaser('#cc0033');
t.equal(res.mode, 'rgb');
t.end();
});

tape('when mode is hsl and preserve_mode is false', t => {
let increaser = mapper(v => v + 0.1, 'hsl', false);
const res = increaser('#cc0033');
t.equal(res.mode, 'hsl');
t.end();
});

tape('when mode is oklch and preserve_mode is false', t => {
let increaser = mapper(v => v + 0.1, 'oklch', false);
const res = increaser('#cc0033');
t.equal(res.mode, 'oklch');
t.end();
});

tape(
`when input color is oklch('color(--oklch 30 0.5 1 / 0.25)') and when mode is hsl and preserve_mode is false`,
t => {
let increaser = mapper(v => v + 0.1, 'hsl', false);
const res = increaser({
mode: 'oklch',
alpha: 0.25,
l: 30,
c: 0.5,
h: 1
});
t.equal(res.mode, 'hsl');
t.end();
}
);

tape(
`when input color is oklch('color(--oklch 30 0.5 1 / 0.25)') and when mode is hsl and preserve_mode is true`,
t => {
let increaser = mapper(v => v + 0.1, 'hsl', true);
const res = increaser({
mode: 'oklch',
alpha: 0.25,
l: 30,
c: 0.5,
h: 1
});
t.equal(res.mode, 'oklch');
t.end();
}
);