141 lines
4.7 KiB
JavaScript
141 lines
4.7 KiB
JavaScript
"use strict";
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var expect = require('expect.js');
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var Immutable = require('immutable');
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var Trie = require('../src/trie.js');
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var Patch = require('../src/patch.js');
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var __ = Trie.__;
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var _$ = Trie._$;
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function checkPrettyPatch(p, expectedAdded, expectedRemoved) {
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expect(p.pretty()).to.equal(
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('\n-' + expectedRemoved.join('\n-') +
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'\n+' + expectedAdded.join('\n+') + '\n'));
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}
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describe('basic patch compilation', function () {
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it('should print as expected', function () {
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checkPrettyPatch(Patch.assert([1, 2]),
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[' <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.assert(__),
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[' ★ {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.sub(__),
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[' observe<1> ★ {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.sub([1, 2]),
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[' observe<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.pub('x'),
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[' advertise<1> "x" {true}'],
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[' ::: nothing']);
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});
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it('should work at nonzero metalevel', function () {
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checkPrettyPatch(Patch.assert([1, 2], 0),
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[' <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.assert([1, 2], 1),
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[' at-meta<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.assert([1, 2], 2),
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[' at-meta<1> at-meta<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.sub([1, 2], 0),
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[' observe<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.sub([1, 2], 1),
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[' at-meta<1> observe<1> <2> 1 2 {true}',
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' observe<1> at-meta<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.sub([1, 2], 2),
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[' at-meta<1> at-meta<1> observe<1> <2> 1 2 {true}',
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' observe<1> at-meta<1> <2> 1 2 {true}',
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' observe<1> at-meta<1> at-meta<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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});
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});
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describe('patch sequencing', function () {
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it('should do the right thing in simple cases', function () {
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checkPrettyPatch(Patch.assert(__).andThen(Patch.retract(3)),
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[' ★ {true}',
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' 3 ::: nothing'],
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[' 3 {true}']);
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checkPrettyPatch(Patch.assert(3).andThen(Patch.retract(__)),
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[' ::: nothing'],
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[' ★ {true}']);
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checkPrettyPatch(Patch.assert(__).andThen(Patch.retract(__)),
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[' ::: nothing'],
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[' ★ {true}']);
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checkPrettyPatch(Patch.assert(3).andThen(Patch.retract(3)),
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[' ::: nothing'],
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[' 3 {true}']);
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checkPrettyPatch(Patch.sub([1, __]).andThen(Patch.unsub([1, 2])),
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[' observe<1> <2> 1 ★ {true}',
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' 2 ::: nothing'],
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[' observe<1> <2> 1 2 {true}']);
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checkPrettyPatch(Patch.sub([__, 2]).andThen(Patch.unsub([1, 2])),
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[' observe<1> <2> ★ 2 {true}',
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' 1 ::: nothing'],
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[' observe<1> <2> 1 2 {true}']);
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checkPrettyPatch(Patch.sub([__, __]).andThen(Patch.unsub([1, 2])),
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[' observe<1> <2> ★ ★ {true}',
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' 1 ★ {true}',
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' 2 ::: nothing'],
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[' observe<1> <2> 1 2 {true}']);
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});
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it('works for longer chains of asserts and retracts', function () {
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var rawPatch =
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Patch.assert(1)
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.andThen(Patch.retract(2))
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.andThen(Patch.retract(3))
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.andThen(Patch.assert(4))
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.andThen(Patch.retract(99));
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checkPrettyPatch(rawPatch,
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[' 1 {true}',
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' 4 {true}'],
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[' 2 {true}',
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' 3 {true}',
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' 99 {true}']);
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});
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});
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describe('patch lifting', function () {
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it('should basically work', function () {
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checkPrettyPatch(Patch.assert([1, 2]).lift(),
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[' at-meta<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.sub([1, 2]).lift(),
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[' at-meta<1> observe<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.assert([1, 2]).andThen(Patch.assert(Patch.atMeta([1, 2]))).lift(),
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[' at-meta<1> at-meta<1> <2> 1 2 {true}',
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' <2> 1 2 {true}'],
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[' ::: nothing']);
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});
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});
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describe('patch dropping', function () {
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it('should basically work', function () {
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checkPrettyPatch(Patch.assert([1, 2]).drop(),
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[' ::: nothing'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.sub([1, 2]).drop(),
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[' ::: nothing'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.sub([1, 2], 1).drop(),
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[' observe<1> <2> 1 2 {true}'],
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[' ::: nothing']);
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checkPrettyPatch(Patch.assert([1, 2]).andThen(Patch.assert(Patch.atMeta([1, 2]))).drop(),
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[' <2> 1 2 {true}'],
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[' ::: nothing']);
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});
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});
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