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#69 : Fix unit tests

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This commit is contained in:
Vadim
2021-09-10 17:41:25 +03:00
parent fc14e0cab9
commit 2920d6491b
2 changed files with 216 additions and 209 deletions
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5
src/utils/page.js
View File

@@ -8,7 +8,10 @@ export function getNextParticleIndexLimited({
particlesToScroll, particlesToScroll,
}) { }) {
if (particlesCount < 1) throw new Error('particlesCount must be at least 1') if (particlesCount < 1) throw new Error('particlesCount must be at least 1')
return currentParticleIndex + Math.min(particlesCount - (currentParticleIndex + 1) - particlesToScroll, particlesToScroll) return Math.max(
currentParticleIndex + Math.min(particlesCount - (currentParticleIndex + 1) - particlesToScroll, particlesToScroll),
0
)
} }
export function getNextParticleIndexInfinte({ export function getNextParticleIndexInfinte({

420
src/utils/page.test.js
View File

@@ -7,182 +7,188 @@ import {
getPartialPageSize, getPartialPageSize,
} from './page.js' } from './page.js'
// describe('getNextParticleIndexLimited', () => { describe('getNextParticleIndexLimited', () => {
// it('returns next page index as expected', () => { it('returns next page index as expected', () => {
// const testCases = [ const testCases = [
// { currentParticleIndex: -5, particlesCount: 3, particlesToScroll: 1, expected: 0 }, { currentParticleIndex: -5, particlesCount: 7, particlesToScroll: 2, expected: 0 },
// { currentParticleIndex: 0, particlesCount: 3, particlesToScroll: 1, expected: 1 }, { currentParticleIndex: 0, particlesCount: 7, particlesToScroll: 2, expected: 2 },
// { currentParticleIndex: 1, particlesCount: 3, particlesToScroll: 1, expected: 2 }, { currentParticleIndex: 2, particlesCount: 7, particlesToScroll: 2, expected: 4 },
// { currentParticleIndex: 2, particlesCount: 3, particlesToScroll: 1, expected: 2 }, { currentParticleIndex: 7, particlesCount: 7, particlesToScroll: 2, expected: 4 },
// { currentParticleIndex: 7, particlesCount: 3, particlesToScroll: 1, expected: 2 }, ]
// ] testCases.forEach(({
// testCases.forEach(({ currentParticleIndex,
// currentParticleIndex, particlesCount,
// particlesCount, particlesToScroll,
// particlesToScroll, expected,
// expected, }) => {
// }) => { expect(getNextParticleIndexLimited({
// expect(getNextParticleIndexLimited({ currentParticleIndex,
// currentParticleIndex, particlesCount,
// particlesCount, particlesToScroll,
// particlesToScroll, })).toBe(expected)
// })).toBe(expected) })
// }) })
// }) it('throws error if particlesCount is less than 1', () => {
// it('throws error if particlesCount is less than 1', () => { const currentParticleIndex = 5
// const currentParticleIndex = 5 const particlesCount = 0
// const particlesCount = 0 const particlesToScroll = 1
// const particlesToScroll = 1 expect(
// expect( () => getNextParticleIndexLimited({
// () => getNextParticleIndexLimited({ currentParticleIndex,
// currentParticleIndex, particlesCount,
// particlesCount, particlesToScroll,
// particlesToScroll, })
// }) ).toThrowError('particlesCount must be at least 1')
// ).toThrowError('particlesCount must be at least 1') })
// }) })
// })
// describe('getNextParticleIndexInfinte', () => { describe('getNextParticleIndexInfinte', () => {
// it('returns next page index as expected', () => { it('returns next page index as expected', () => {
// const testCases = [ const testCases = [
// { currentParticleIndex: -5, particlesCount: 3, expected: 1 }, { currentParticleIndex: -5, particlesCount: 7, particlesToScroll: 2, clonesCountTail: 3, expected: 2 },
// { currentParticleIndex: 0, particlesCount: 3, expected: 1 }, { currentParticleIndex: 0, particlesCount: 7, particlesToScroll: 2, clonesCountTail: 3, expected: 2 },
// { currentParticleIndex: 1, particlesCount: 3, expected: 2 }, { currentParticleIndex: 2, particlesCount: 7, particlesToScroll: 2, clonesCountTail: 3, expected: 4 },
// { currentParticleIndex: 2, particlesCount: 3, expected: 0 }, { currentParticleIndex: 7, particlesCount: 7, particlesToScroll: 2, clonesCountTail: 3, expected: 4 },
// { currentParticleIndex: 7, particlesCount: 3, expected: 0 }, ]
// ] testCases.forEach(({
// testCases.forEach(({ currentParticleIndex,
// currentParticleIndex, particlesCount,
// particlesCount, particlesToScroll,
// expected, clonesCountTail,
// }) => { expected,
// expect(getNextParticleIndexInfinte({ }) => {
// currentParticleIndex, expect(getNextParticleIndexInfinte({
// particlesCount, currentParticleIndex,
// })).toBe(expected) particlesCount,
// }) particlesToScroll,
// }) clonesCountTail,
// it('throws error if particlesCount is less than 1', () => { })).toBe(expected)
// const currentParticleIndex = 5 })
// const particlesCount = 0 })
// expect( it('throws error if particlesCount is less than 1', () => {
// () => getNextParticleIndexInfinte({ const currentParticleIndex = 5
// currentParticleIndex, const particlesCount = 0
// particlesCount, expect(
// }) () => getNextParticleIndexInfinte({
// ).toThrowError('particlesCount must be at least 1') currentParticleIndex,
// }) particlesCount,
// }) })
).toThrowError('particlesCount must be at least 1')
})
})
// describe('getPrevParticleIndexLimited', () => { describe('getPrevParticleIndexLimited', () => {
// it('returns prev page index as expected', () => { it('returns prev page index as expected', () => {
// const testCases = [ const testCases = [
// { currentParticleIndex: -5, particlesCount: 3, expected: 0 }, { currentParticleIndex: -5, particlesCount: 7, particlesToScroll: 2, expected: 0 },
// { currentParticleIndex: 0, particlesCount: 3, expected: 0 }, { currentParticleIndex: 0, particlesCount: 7, particlesToScroll: 2, expected: 0 },
// { currentParticleIndex: 1, particlesCount: 3, expected: 0 }, { currentParticleIndex: 2, particlesCount: 7, particlesToScroll: 2, expected: 0 },
// { currentParticleIndex: 2, particlesCount: 3, expected: 1 }, { currentParticleIndex: 4, particlesCount: 7, particlesToScroll: 2, expected: 2 },
// { currentParticleIndex: 7, particlesCount: 3, expected: 2 }, { currentParticleIndex: 10, particlesCount: 7, particlesToScroll: 2, expected: 6 },
// ] ]
// testCases.forEach(({ testCases.forEach(({
// currentParticleIndex, currentParticleIndex,
// particlesCount, particlesCount,
// expected, particlesToScroll,
// }) => { expected,
// expect(getPrevParticleIndexLimited({ }) => {
// currentParticleIndex, expect(getPrevParticleIndexLimited({
// particlesCount, currentParticleIndex,
// })).toBe(expected) particlesCount,
// }) particlesToScroll,
// }) })).toBe(expected)
// it('throws error if particlesCount is less than 1', () => { })
// const currentParticleIndex = 5 })
// const particlesCount = 0 it('throws error if particlesCount is less than 1', () => {
// expect( const currentParticleIndex = 5
// () => getPrevParticleIndexLimited({ const particlesCount = 0
// currentParticleIndex, expect(
// particlesCount, () => getPrevParticleIndexLimited({
// }) currentParticleIndex,
// ).toThrowError('particlesCount must be at least 1') particlesCount,
// }) })
// }) ).toThrowError('particlesCount must be at least 1')
})
})
// describe('getPrevParticleIndexInfinte', () => { describe('getPrevParticleIndexInfinte', () => {
// it('returns prev page index as expected', () => { it('returns prev page index as expected', () => {
// const testCases = [ const testCases = [
// { currentParticleIndex: -5, particlesCount: 3, expected: 2 }, { currentParticleIndex: -5, particlesCount: 7, particlesToScroll: 2, expected: 0 },
// { currentParticleIndex: 0, particlesCount: 3, expected: 2 }, { currentParticleIndex: 2, particlesCount: 7, particlesToScroll: 2, expected: 0 },
// { currentParticleIndex: 1, particlesCount: 3, expected: 0 }, { currentParticleIndex: 2, particlesCount: 7, particlesToScroll: 2, expected: 0 },
// { currentParticleIndex: 2, particlesCount: 3, expected: 1 }, { currentParticleIndex: 10, particlesCount: 7, particlesToScroll: 2, expected: 4 },
// { currentParticleIndex: 7, particlesCount: 3, expected: 1 }, ]
// ] testCases.forEach(({
// testCases.forEach(({ currentParticleIndex,
// currentParticleIndex, particlesCount,
// particlesCount, particlesToScroll,
// expected, expected,
// }) => { }) => {
// expect(getPrevParticleIndexInfinte({ expect(getPrevParticleIndexInfinte({
// currentParticleIndex, currentParticleIndex,
// particlesCount, particlesCount,
// })).toBe(expected) particlesToScroll,
// }) })).toBe(expected)
// }) })
// it('throws error if particlesCount is less than 1', () => { })
// const currentParticleIndex = 5 it('throws error if particlesCount is less than 1', () => {
// const particlesCount = 0 const currentParticleIndex = 2
// expect( const particlesCount = 7
// () => getPrevParticleIndexInfinte({ const particlesToScroll = 2
// currentParticleIndex,
// particlesCount, expect(
// }) () => getPrevParticleIndexInfinte({
// ).toThrowError('particlesCount must be at least 1') currentParticleIndex,
// }) particlesCount,
// }) particlesToScroll,
})
).toThrowError('particlesCount must be at least 1')
})
})
describe('getPartialPageSize', () => { describe('getPartialPageSize', () => {
it('returns result as expected if particlesToShow <= particlesToScroll', () => { it('returns result as expected if particlesToShow <= particlesToScroll', () => {
const testCases = [ const testCases = [{
{ pagesCountWithoutClones: 9,
particlesCountWithoutClones: 9, particlesToShow: 2,
particlesToShow: 2, particlesToScroll: 3,
particlesToScroll: 3, expected: 0,
expected: 0, }, {
}, { pagesCountWithoutClones: 15,
particlesCountWithoutClones: 15, particlesToShow: 4,
particlesToShow: 4, particlesToScroll: 5,
particlesToScroll: 5, expected: 0,
expected: 0, }, {
}, { pagesCountWithoutClones: 16,
particlesCountWithoutClones: 16, particlesToShow: 4,
particlesToShow: 4, particlesToScroll: 5,
particlesToScroll: 5, expected: 1,
expected: 1, }, {
}, { pagesCountWithoutClones: 17,
particlesCountWithoutClones: 17, particlesToShow: 4,
particlesToShow: 4, particlesToScroll: 5,
particlesToScroll: 5, expected: 2,
expected: 2, }, {
}, { pagesCountWithoutClones: 18,
particlesCountWithoutClones: 18, particlesToShow: 4,
particlesToShow: 4, particlesToScroll: 5,
particlesToScroll: 5, expected: 3,
expected: 3, }, {
}, { pagesCountWithoutClones: 8,
particlesCountWithoutClones: 8, particlesToShow: 2,
particlesToShow: 2, particlesToScroll: 2,
particlesToScroll: 2, expected: 0,
expected: 0, }]
}
]
testCases.forEach(({ testCases.forEach(({
particlesCountWithoutClones, pagesCountWithoutClones,
particlesToShow, particlesToShow,
particlesToScroll, particlesToScroll,
expected, expected,
}) => { }) => {
expect(getPartialPageSize({ expect(getPartialPageSize({
particlesCountWithoutClones, pagesCountWithoutClones,
particlesToShow, particlesToShow,
particlesToScroll, particlesToScroll,
})).toBe(expected) })).toBe(expected)
@@ -190,58 +196,56 @@ describe('getPartialPageSize', () => {
}) })
it('returns result as expected if particlesToShow > particlesToScroll', () => { it('returns result as expected if particlesToShow > particlesToScroll', () => {
const testCases = [ const testCases = [{
{ pagesCountWithoutClones: 8,
particlesCountWithoutClones: 8, particlesToShow: 4,
particlesToShow: 4, particlesToScroll: 2,
particlesToScroll: 2, expected: 2,
expected: 2, }, {
}, { pagesCountWithoutClones: 7,
particlesCountWithoutClones: 7, particlesToShow: 4,
particlesToShow: 4, particlesToScroll: 3,
particlesToScroll: 3, expected: 1,
expected: 1, }, {
}, { pagesCountWithoutClones: 8,
particlesCountWithoutClones: 8, particlesToShow: 4,
particlesToShow: 4, particlesToScroll: 3,
particlesToScroll: 3, expected: 2,
expected: 2, }, {
}, { pagesCountWithoutClones: 8,
particlesCountWithoutClones: 8, particlesToShow: 2,
particlesToShow: 2, particlesToScroll: 2,
particlesToScroll: 2, expected: 0,
expected: 0, }, {
}, { pagesCountWithoutClones: 9,
particlesCountWithoutClones: 9, particlesToShow: 4,
particlesToShow: 4, particlesToScroll: 3,
particlesToScroll: 3, expected: 3,
expected: 3, }, {
}, { pagesCountWithoutClones: 8,
particlesCountWithoutClones: 8, particlesToShow: 3,
particlesToShow: 3, particlesToScroll: 2,
particlesToScroll: 2, expected: 2,
expected: 2, }, {
}, { pagesCountWithoutClones: 6,
particlesCountWithoutClones: 6, particlesToShow: 3,
particlesToShow: 3, particlesToScroll: 1,
particlesToScroll: 1, expected: 2,
expected: 2, }, {
}, { pagesCountWithoutClones: 7,
particlesCountWithoutClones: 7, particlesToShow: 3,
particlesToShow: 3, particlesToScroll: 1,
particlesToScroll: 1, expected: 2,
expected: 2, }]
}
]
testCases.forEach(({ testCases.forEach(({
particlesCountWithoutClones, pagesCountWithoutClones,
particlesToShow, particlesToShow,
particlesToScroll, particlesToScroll,
expected, expected,
}) => { }) => {
expect(getPartialPageSize({ expect(getPartialPageSize({
particlesCountWithoutClones, pagesCountWithoutClones,
particlesToShow, particlesToShow,
particlesToScroll, particlesToScroll,
})).toBe(expected) })).toBe(expected)