File size: 5,507 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 |
const mockFiles = ( filesToMock ) => {
Object.entries( filesToMock ).forEach( ( [ file, content ] ) => {
jest.mock( file, () => content, { virtual: true } );
} );
};
mockFiles( {
'/project/root/package.json': {
name: 'root',
version: '1.0.0',
dependencies: {
a: '^1.0.0',
b: '^2.0.0',
},
},
'/project/root/node_modules/a/package.json': {
name: 'a',
version: '1.1.1',
dependencies: {},
},
'/project/root/node_modules/b/package.json': {
name: 'b',
version: '2.2.2',
dependencies: {
c: '3.2.1',
},
},
'/project/root/node_modules/c/package.json': {
name: 'c',
version: '3.2.1',
},
} );
const { candidates, getEffectiveTreeAsTree } = require( '../index' );
describe( 'Candidate generation', () => {
it( 'Traverses the path', () => {
const paths = Array.from( candidates( '/project/root/a/node_modules/b/node_modules/c' ) );
expect( paths ).toStrictEqual( [
'/project/root/a/node_modules/b/node_modules/c/node_modules',
'/project/root/a/node_modules/b/node_modules',
'/project/root/a/node_modules',
'/project/root/node_modules',
'/project/node_modules',
'/node_modules',
'/node_modules',
] );
} );
} );
describe( 'Effective tree generation', () => {
beforeEach( () => {
jest.spyOn( console, 'warn' ).mockImplementation();
} );
describe( 'as tree', () => {
it( 'Generates the simplified tree', () => {
const tree = getEffectiveTreeAsTree( '/project/root/package.json' );
//prettier-ignore
expect(tree).toEqual([
'└─ root@1.0.0',
' ├─ a@1.1.1',
' └─ b@2.2.2',
' └─ c@3.2.1',
].join('\n'));
} );
it( 'Detects circular dependencies', () => {
mockFiles( {
'/project/root/node_modules/c/package.json': {
name: 'c',
version: '3.2.1',
dependencies: {
b: '^2.0.0',
},
},
} );
jest.resetModules();
// eslint-disable-next-line no-shadow
const { getEffectiveTreeAsTree } = require( '../index' );
const tree = getEffectiveTreeAsTree( '/project/root/package.json' );
//prettier-ignore
expect(tree).toEqual([
'└─ root@1.0.0',
' ├─ a@1.1.1',
' └─ b@2.2.2',
' └─ c@3.2.1',
' └─ b@2.2.2: [Circular]'
].join('\n'));
} );
it( 'Does not cache circular dependencies', async () => {
jest.resetModules();
mockFiles( {
'/project/root/package.json': {
name: 'root',
version: '1.0.0',
dependencies: {
a: '^1.0.0',
b: '^2.0.0',
},
},
'/project/root/node_modules/a/package.json': {
name: 'a',
version: '1.1.1',
dependencies: {
b: '^2.0.0',
},
},
'/project/root/node_modules/b/package.json': {
name: 'b',
version: '2.2.2',
dependencies: {
c: '3.2.1',
},
},
'/project/root/node_modules/c/package.json': {
name: 'c',
version: '3.2.1',
dependencies: {
a: '^1.0.0',
},
},
} );
// eslint-disable-next-line no-shadow
const { getEffectiveTreeAsTree } = require( '../index' );
const tree = await getEffectiveTreeAsTree( '/project/root/package.json' );
/**
* Note that when we find 'b' in the second chain (root->b->...), it has been processed previously in the first chain
* (root->a->b->...). However, because that first chain ended in a circular dependency, none of the packages in the chain
* was cached.
*
* This is a good thing. Otherwise, when we process 'b' the chain root->b we would pick 'b' from the cache,
* (equal to 'b->c->a[Circular]'), and we would end up with the chain root->b->c->a[Circular], which is not true.
*
* So tldr: branches with [Circular] dependencies are not cached, and this test is asserting that behaviour.
*/
//prettier-ignore
expect(tree).toEqual([
'└─ root@1.0.0',
' ├─ a@1.1.1',
' │ └─ b@2.2.2',
' │ └─ c@3.2.1',
' │ └─ a@1.1.1: [Circular]',
' └─ b@2.2.2',
' └─ c@3.2.1',
' └─ a@1.1.1',
' └─ b@2.2.2: [Circular]',
].join('\n'));
} );
} );
describe( 'as list', () => {
it( 'Complex tree', async () => {
jest.resetModules();
mockFiles( {
'/project/root/package.json': {
name: 'root',
version: '1.0.0',
dependencies: {
a: '^1.0.0',
b: '^2.0.0',
},
},
'/project/root/node_modules/a/package.json': {
name: 'a',
version: '1.1.1',
dependencies: {
b: '^2.0.0',
},
},
'/project/root/node_modules/b/package.json': {
name: 'b',
version: '2.2.2',
dependencies: {
c: '3.2.1',
},
},
'/project/root/node_modules/c/package.json': {
name: 'c',
version: '3.2.1',
dependencies: {
a: '^1.0.0',
},
},
} );
// eslint-disable-next-line no-shadow
const { getEffectiveTreeAsList } = require( '../index' );
const tree = await getEffectiveTreeAsList( '/project/root/package.json' );
//prettier-ignore
expect(tree).toEqual([
'root@1.0.0',
'root@1.0.0 a@1.1.1',
'root@1.0.0 a@1.1.1 b@2.2.2',
'root@1.0.0 a@1.1.1 b@2.2.2 c@3.2.1',
'root@1.0.0 a@1.1.1 b@2.2.2 c@3.2.1 a@1.1.1 [Circular]',
'root@1.0.0 b@2.2.2',
'root@1.0.0 b@2.2.2 c@3.2.1',
'root@1.0.0 b@2.2.2 c@3.2.1 a@1.1.1',
'root@1.0.0 b@2.2.2 c@3.2.1 a@1.1.1 b@2.2.2 [Circular]',
].join('\n'));
} );
} );
afterEach( () => {
console.warn.mockRestore();
} );
} );
|