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16 |
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17 | import * as assert from 'assert';
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18 | import { injectable } from 'inversify';
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19 | import { createTreeTestContainer } from './test/tree-test-container';
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20 | import { TreeImpl, CompositeTreeNode, TreeNode } from './tree';
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21 | import { TreeModel } from './tree-model';
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22 | import { ExpandableTreeNode } from './tree-expansion';
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23 | import { TreeLabelProvider } from './tree-label-provider';
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24 |
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25 | @injectable()
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26 | class ConsistencyTestTree extends TreeImpl {
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27 |
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28 | public resolveCounter = 0;
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29 |
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30 | protected override async resolveChildren(parent: CompositeTreeNode): Promise<TreeNode[]> {
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31 | if (parent.id === 'expandable') {
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32 | const step: () => Promise<TreeNode[]> = async () => {
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33 |
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34 |
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35 | if (this.root && this.root !== parent.parent) {
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36 | this.resolveCounter++;
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37 | return [];
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38 | } else {
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39 | await new Promise(resolve => setTimeout(resolve, 10));
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40 | return step();
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41 | }
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42 | };
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43 | return step();
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44 | }
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45 | return super.resolveChildren(parent);
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46 | }
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47 |
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48 | }
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49 |
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50 |
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51 |
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52 |
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53 | function createConsistencyTestRoot(rootName: string): CompositeTreeNode {
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54 | const children: TreeNode[] = [];
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55 | const root: CompositeTreeNode = {
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56 | id: 'root',
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57 | name: rootName,
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58 | parent: undefined,
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59 | children
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60 | };
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61 | const parent: ExpandableTreeNode = {
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62 | id: 'expandable',
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63 | name: 'expandable',
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64 | parent: root,
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65 | expanded: true,
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66 | children: []
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67 | };
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68 | children.push(parent);
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69 | return root;
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70 | }
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71 |
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72 | describe('Tree Consistency', () => {
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73 |
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74 | it('setting different tree roots should finish', async () => {
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75 | const container = createTreeTestContainer();
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76 | container.bind(TreeLabelProvider).toSelf().inSingletonScope();
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77 | const labelProvider = container.get(TreeLabelProvider);
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78 |
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79 | container.bind(ConsistencyTestTree).toSelf();
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80 | container.rebind(TreeImpl).toService(ConsistencyTestTree);
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81 | const tree = container.get(ConsistencyTestTree);
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82 |
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83 | const model = container.get<TreeModel>(TreeModel);
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84 |
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85 | model.root = createConsistencyTestRoot('Foo');
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86 | await new Promise(resolve => setTimeout(resolve, 50));
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87 |
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88 | model.root = createConsistencyTestRoot('Bar');
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89 | await new Promise(resolve => setTimeout(resolve, 50));
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90 |
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91 | let resolveCounter = tree.resolveCounter;
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92 | assert.deepStrictEqual(tree.resolveCounter, 1);
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93 | for (let i = 0; i < 10; i++) {
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94 | await new Promise(resolve => setTimeout(resolve, 50));
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95 | if (resolveCounter === tree.resolveCounter) {
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96 | assert.deepStrictEqual(tree.resolveCounter, 1);
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97 | assert.deepStrictEqual(labelProvider.getName(model.root)!, 'Bar');
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98 | return;
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99 | }
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100 | resolveCounter = tree.resolveCounter;
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101 | }
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102 | assert.ok(false, 'Resolving does not stop, attempts: ' + tree.resolveCounter);
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103 | });
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104 |
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105 | });
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