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Add auto colors functionality (#296)
Co-authored-by: Pascal Jufer <[email protected]> Co-authored-by: Gustavo Henke <[email protected]>
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Original file line number | Diff line number | Diff line change |
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import chalk from 'chalk'; | ||
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import { PrefixColorSelector } from './prefix-color-selector'; | ||
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afterEach(() => { | ||
jest.restoreAllMocks(); | ||
}); | ||
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describe('#getNextColor', function () { | ||
const customTests: Record< | ||
string, | ||
{ | ||
acceptableConsoleColors?: Array<keyof typeof chalk>; | ||
customColors?: string[]; | ||
expectedColors: string[]; | ||
} | ||
> = { | ||
'does not produce a color if prefixColors empty': { | ||
customColors: [], | ||
expectedColors: ['', '', ''], | ||
}, | ||
'does not produce a color if prefixColors undefined': { | ||
expectedColors: ['', '', ''], | ||
}, | ||
'uses user defined prefix colors only, if no auto is used': { | ||
customColors: ['red', 'green', 'blue'], | ||
expectedColors: [ | ||
'red', | ||
'green', | ||
'blue', | ||
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// Uses last color if last color is not "auto" | ||
'blue', | ||
'blue', | ||
'blue', | ||
], | ||
}, | ||
'picks varying colors when user defines an auto color': { | ||
acceptableConsoleColors: ['green', 'blue'], | ||
customColors: [ | ||
'red', | ||
'green', | ||
'auto', | ||
'green', | ||
'auto', | ||
'green', | ||
'auto', | ||
'blue', | ||
'auto', | ||
'orange', | ||
], | ||
expectedColors: [ | ||
// Custom colors | ||
'red', | ||
'green', | ||
'blue', // Picks auto color "blue", not repeating consecutive "green" color | ||
'green', // Manual | ||
'blue', // Auto picks "blue" not to repeat last | ||
'green', // Manual | ||
'blue', // Auto picks "blue" again not to repeat last | ||
'blue', // Manual | ||
'green', // Auto picks "green" again not to repeat last | ||
'orange', | ||
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// Uses last color if last color is not "auto" | ||
'orange', | ||
'orange', | ||
'orange', | ||
], | ||
}, | ||
'uses user defined colors then recurring auto colors without repeating consecutive colors': | ||
{ | ||
acceptableConsoleColors: ['green', 'blue'], | ||
customColors: ['red', 'green', 'auto'], | ||
expectedColors: [ | ||
// Custom colors | ||
'red', | ||
'green', | ||
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// Picks auto colors, not repeating consecutive "green" color | ||
'blue', | ||
'green', | ||
'blue', | ||
'green', | ||
], | ||
}, | ||
'can sometimes produce consecutive colors': { | ||
acceptableConsoleColors: ['green', 'blue'], | ||
customColors: ['blue', 'auto'], | ||
expectedColors: [ | ||
// Custom colors | ||
'blue', | ||
|
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// Picks auto colors | ||
'green', | ||
// Does not repeat custom colors for initial auto colors, i.e. does not use "blue" again so soon | ||
'green', // Consecutive color picked, however practically there would be a lot of colors that need to be set in a particular order for this to occur | ||
'blue', | ||
'green', | ||
'blue', | ||
'green', | ||
'blue', | ||
], | ||
}, | ||
'considers the Bright variants of colors equal to the normal colors to avoid similar colors': | ||
{ | ||
acceptableConsoleColors: ['greenBright', 'blueBright', 'green', 'blue', 'magenta'], | ||
customColors: ['green', 'blue', 'auto'], | ||
expectedColors: [ | ||
// Custom colors | ||
'green', | ||
'blue', | ||
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// Picks auto colors, not repeating green and blue colors and variants initially | ||
'magenta', | ||
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// Picks auto colors | ||
'greenBright', | ||
'blueBright', | ||
'green', | ||
'blue', | ||
'magenta', | ||
], | ||
}, | ||
}; | ||
it.each(Object.entries(customTests))( | ||
'%s', | ||
(_, { acceptableConsoleColors, customColors, expectedColors }) => { | ||
if (acceptableConsoleColors) { | ||
jest.spyOn(PrefixColorSelector, 'ACCEPTABLE_CONSOLE_COLORS', 'get').mockReturnValue( | ||
acceptableConsoleColors | ||
); | ||
} | ||
const prefixColorSelector = new PrefixColorSelector(customColors); | ||
const prefixColorSelectorValues = expectedColors.map(() => | ||
prefixColorSelector.getNextColor() | ||
); | ||
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expect(prefixColorSelectorValues).toEqual(expectedColors); | ||
} | ||
); | ||
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const autoTests = { | ||
'does not repeat consecutive colors when last prefixColor is auto': false, | ||
'handles when more individual auto prefixColors exist than acceptable console colors': true, | ||
}; | ||
it.each(Object.entries(autoTests))('%s', (_, map) => { | ||
// Pick auto colors over 2 sets | ||
const expectedColors: string[] = [ | ||
...PrefixColorSelector.ACCEPTABLE_CONSOLE_COLORS, | ||
...PrefixColorSelector.ACCEPTABLE_CONSOLE_COLORS, | ||
]; | ||
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const prefixColorSelector = new PrefixColorSelector( | ||
map ? expectedColors.map(() => 'auto') : ['auto'] | ||
); | ||
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expectedColors.reduce((previousColor, currentExpectedColor) => { | ||
const actualSelectedColor = prefixColorSelector.getNextColor(); | ||
expect(actualSelectedColor).not.toBe(previousColor); // No consecutive colors | ||
expect(actualSelectedColor).toBe(currentExpectedColor); // Expected color | ||
return actualSelectedColor; | ||
}, ''); | ||
}); | ||
}); | ||
|
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describe('PrefixColorSelector#ACCEPTABLE_CONSOLE_COLORS', () => { | ||
it('has more than 1 auto color defined', () => { | ||
// (!) The current implementation is based on the assumption that 'ACCEPTABLE_CONSOLE_COLORS' | ||
// always has more than one entry, which is what we enforce via this test | ||
expect(PrefixColorSelector.ACCEPTABLE_CONSOLE_COLORS.length).toBeGreaterThan(1); | ||
}); | ||
}); |
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