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const { parse } = require('../src/parser.js')
describe('parse', () => {
it('parses a constant', () => {
expect(parse('5')).toEqual({ type: 'constant', value: 5 })
})
it('parses a simple die (1d6)', () => {
expect(parse('1d6')).toEqual({
type: 'd',
left: { type: 'constant', value: 1 },
right: { type: 'constant', value: 6 }
})
})
it('parses a simple die (10d42)', () => {
expect(parse('10d42')).toEqual({
type: 'd',
left: { type: 'constant', value: 10 },
right: { type: 'constant', value: 42 }
})
})
it('parses a compound die (1d2d3)', () => {
expect(parse('1d2d3')).toEqual({
type: 'd',
left: { type: 'constant', value: 1 },
right: {
type: 'd',
left: { type: 'constant', value: 2 },
right: { type: 'constant', value: 3 }
}
})
})
it('parses constant addition', () => {
expect(parse('1 + 2')).toEqual({
type: 'add',
left: { type: 'constant', value: 1 },
right: { type: 'constant', value: 2 }
})
})
it('parses dice addition', () => {
expect(parse('1d6 + 2d8')).toEqual({
type: 'add',
left: {
type: 'd',
left: { type: 'constant', value: 1 },
right: { type: 'constant', value: 6 }
},
right: {
type: 'd',
left: { type: 'constant', value: 2 },
right: { type: 'constant', value: 8 }
}
})
})
it('parses dice subtraction', () => {
expect(parse('1d6 - 2d8')).toEqual({
type: 'subtract',
left: {
type: 'd',
left: { type: 'constant', value: 1 },
right: { type: 'constant', value: 6 }
},
right: {
type: 'd',
left: { type: 'constant', value: 2 },
right: { type: 'constant', value: 8 }
}
})
})
})
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