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use rdf validators to guess datatypes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,59 +1,79 @@ | ||
| import { describe, it } from 'mocha' | ||
| import { expect } from 'chai' | ||
| import { validators } from 'rdf-validate-datatype' | ||
| import { xsd } from '@tpluscode/rdf-ns-builders' | ||
| import { NamedNode } from '@rdfjs/types' | ||
|
|
||
| const isInteger = (value: string) => /^-?\d+$/.test(value) | ||
| const isDecimal = (value: string) => /^-?\d+(\.\d+)?$/.test(value) | ||
| const isDate = (value: string) => /^\d{4}-\d{2}-\d{2}$/.test(value) | ||
| type Validator = (value: string) => boolean | ||
|
|
||
| const datatypes = [ | ||
| { check: isInteger, name: 'integer' }, | ||
| { check: isDecimal, name: 'decimal' }, | ||
| { check: isDate, name: 'date' }, | ||
| ] | ||
| const datatypes: Array<{ check: Validator; name: NamedNode }> = [] | ||
|
|
||
| const add = (name: NamedNode) => { | ||
| const check = validators.find(name) | ||
| if (check) { | ||
| datatypes.push({ check, name }) | ||
| } | ||
| } | ||
|
|
||
| add(xsd.integer) | ||
| add(xsd.decimal) | ||
| add(xsd.date) | ||
|
|
||
| const datatype = (values: string[]) => { | ||
| let i = 0 | ||
| let current = datatypes[i] | ||
| for (const value of values) { | ||
| while (!current.check(value)) { | ||
| if (++i === datatypes.length) { | ||
| return 'string' | ||
| return xsd.string | ||
| } | ||
| current = datatypes[i] | ||
| } | ||
| } | ||
| return current.name | ||
| } | ||
|
|
||
| describe('@cube-creator/model/CsvColumn', () => { | ||
| describe.only('@cube-creator/model/CsvColumn', () => { | ||
| describe('columnDatatype', () => { | ||
| it('recognize integers', () => { | ||
| expect(isInteger('42')).to.be.true | ||
| expect(isInteger('-42')).to.be.true | ||
| expect(isInteger('foo')).to.be.false | ||
| expect(isInteger('42.0')).to.be.false | ||
| expect(isInteger('2021-01-01')).to.be.false | ||
| const isInteger = validators.find(xsd.integer) | ||
| expect(isInteger).to.be.not.null | ||
| if (isInteger) { | ||
| expect(isInteger('42')).to.be.true | ||
| expect(isInteger('-42')).to.be.true | ||
| expect(isInteger('foo')).to.be.false | ||
| expect(isInteger('42.0')).to.be.false | ||
| expect(isInteger('2021-01-01')).to.be.false | ||
| } | ||
| }) | ||
| it('recognize decimals', () => { | ||
| expect(isDecimal('42')).to.be.true | ||
| expect(isDecimal('-42')).to.be.true | ||
| expect(isDecimal('foo')).to.be.false | ||
| expect(isDecimal('42.0')).to.be.true | ||
| expect(isDecimal('2021-01-01')).to.be.false | ||
| const isDecimal = validators.find(xsd.decimal) | ||
| expect(isDecimal).to.be.not.null | ||
| if (isDecimal) { | ||
| expect(isDecimal('42')).to.be.true | ||
| expect(isDecimal('-42')).to.be.true | ||
| expect(isDecimal('foo')).to.be.false | ||
| expect(isDecimal('42.0')).to.be.true | ||
| expect(isDecimal('2021-01-01')).to.be.false | ||
| } | ||
| }) | ||
| it('recognize dates', () => { | ||
| expect(isDate('2021-01-01')).to.be.true | ||
| expect(isDate('2021-01-01T00:00:00Z')).to.be.false | ||
| expect(isDate('foo')).to.be.false | ||
| const isDate = validators.find(xsd.date) | ||
| expect(isDate).to.be.not.null | ||
| if (isDate) { | ||
| expect(isDate('2021-01-01')).to.be.true | ||
| expect(isDate('2021-01-01T00:00:00Z')).to.be.false | ||
| expect(isDate('foo')).to.be.false | ||
| } | ||
| }) | ||
| }) | ||
| describe('datatype', () => { | ||
| it('recognize datatype', () => { | ||
| expect(datatype(['42'])).to.equal('integer') | ||
| expect(datatype(['42', '42'])).to.equal('integer') | ||
| expect(datatype(['42', '42.1'])).to.equal('decimal') | ||
| expect(datatype(['42', 'foo'])).to.equal('string') | ||
| expect(datatype(['2021-01-01', '2021-01-01'])).to.equal('date') | ||
| expect(datatype(['42']).equals(xsd.integer)).to.be.true | ||
| expect(datatype(['42', '42']).equals(xsd.integer)).to.be.true | ||
| expect(datatype(['42', '42.1']).equals(xsd.decimal)).to.be.true | ||
| expect(datatype(['42', 'foo']).equals(xsd.string)).to.be.true | ||
| expect(datatype(['2021-01-01', '2021-01-01']).equals(xsd.date)).to.be.true | ||
| }) | ||
| }) | ||
| }) |
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