130 lines
3.5 KiB
TypeScript
130 lines
3.5 KiB
TypeScript
import fs from 'fs/promises'
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import os from 'os'
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import path from 'path'
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import { predicateFromInputs, PredicateInputs } from '../src/predicate'
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describe('subjectFromInputs', () => {
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const blankInputs: PredicateInputs = {
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predicateType: '',
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predicate: '',
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predicatePath: ''
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}
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describe('when no inputs are provided', () => {
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it('throws an error', () => {
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expect(() => predicateFromInputs(blankInputs)).toThrow(/predicate-type/i)
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})
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})
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describe('when neither predicate path nor predicate are provided', () => {
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it('throws an error', () => {
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const inputs: PredicateInputs = {
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...blankInputs,
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predicateType: 'https://example.com/predicate'
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}
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expect(() => predicateFromInputs(inputs)).toThrow(
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/one of predicate-path or predicate must be provided/i
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)
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})
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})
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describe('when both predicate path and predicate are provided', () => {
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it('throws an error', () => {
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const inputs: PredicateInputs = {
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predicateType: 'https://example.com/predicate',
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predicate: '{}',
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predicatePath: 'path/to/predicate'
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}
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expect(() => predicateFromInputs(inputs)).toThrow(
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/only one of predicate-path or predicate may be provided/i
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)
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})
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})
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describe('when specifying a predicate path', () => {
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const predicateType = 'https://example.com/predicate'
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const content = '{}'
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let predicatePath = ''
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beforeEach(async () => {
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// Set-up temp directory
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const tmpDir = await fs.realpath(os.tmpdir())
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const dir = await fs.mkdtemp(tmpDir + path.sep)
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const filename = 'subject'
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predicatePath = path.join(dir, filename)
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// Write file to temp directory
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await fs.writeFile(predicatePath, content)
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})
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afterEach(async () => {
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// Clean-up temp directory
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await fs.rm(path.parse(predicatePath).dir, { recursive: true })
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})
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it('returns the predicate', () => {
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const inputs: PredicateInputs = {
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...blankInputs,
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predicateType,
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predicatePath
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}
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expect(predicateFromInputs(inputs)).toEqual({
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type: predicateType,
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params: JSON.parse(content)
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})
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})
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})
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describe('when specifying a predicate path that does not exist', () => {
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const predicateType = 'https://example.com/predicate'
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const predicatePath = 'foo'
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it('returns the predicate', () => {
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const inputs: PredicateInputs = {
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...blankInputs,
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predicateType,
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predicatePath
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}
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expect(() => predicateFromInputs(inputs)).toThrow(/file not found/)
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})
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})
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describe('when specifying a predicate value', () => {
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const predicateType = 'https://example.com/predicate'
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const content = '{}'
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it('returns the predicate', () => {
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const inputs: PredicateInputs = {
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...blankInputs,
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predicateType,
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predicate: content
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}
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expect(predicateFromInputs(inputs)).toEqual({
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type: predicateType,
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params: JSON.parse(content)
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})
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})
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})
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describe('when specifying a predicate value exceeding the max size', () => {
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const predicateType = 'https://example.com/predicate'
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const content = JSON.stringify({ a: 'a'.repeat(16 * 1024 * 1024) })
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it('throws an error', () => {
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const inputs: PredicateInputs = {
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...blankInputs,
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predicateType,
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predicate: content
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}
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expect(() => predicateFromInputs(inputs)).toThrow(
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/predicate string exceeds maximum/
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)
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})
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})
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})
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