| 25 | `// Jest Snapshot v${SNAPSHOT_VERSION}, ${SNAPSHOT_GUIDE_LINK}`; |
| 26 | |
| 27 | const validateSnapshotHeader = (snapshotContents: string) => { |
| 28 | const headerTest = SNAPSHOT_HEADER_REGEXP.exec(snapshotContents); |
| 29 | const version = headerTest && headerTest[1]; |
| 30 | const guideLink = headerTest && headerTest[2]; |
| 31 | |
| 32 | if (!version) { |
| 33 | return new Error( |
| 34 | chalk.red( |
| 35 | `${chalk.bold('Outdated snapshot')}: No snapshot header found. ` + |
| 36 | 'Jest 19 introduced versioned snapshots to ensure all developers ' + |
| 37 | 'on a project are using the same version of Jest. ' + |
| 38 | 'Please update all snapshots during this upgrade of Jest.\n\n', |
| 39 | ) + SNAPSHOT_VERSION_WARNING, |
| 40 | ); |
| 41 | } |
| 42 | |
| 43 | if (version < SNAPSHOT_VERSION) { |
| 44 | return new Error( |
| 45 | // eslint-disable-next-line prefer-template |
| 46 | chalk.red( |
| 47 | `${chalk.red.bold('Outdated snapshot')}: The version of the snapshot ` + |
| 48 | 'file associated with this test is outdated. The snapshot file ' + |
| 49 | 'version ensures that all developers on a project are using ' + |
| 50 | 'the same version of Jest. ' + |
| 51 | 'Please update all snapshots during this upgrade of Jest.', |
| 52 | ) + |
| 53 | '\n\n' + |
| 54 | `Expected: v${SNAPSHOT_VERSION}\n` + |
| 55 | `Received: v${version}\n\n` + |
| 56 | SNAPSHOT_VERSION_WARNING, |
| 57 | ); |
| 58 | } |
| 59 | |
| 60 | if (version > SNAPSHOT_VERSION) { |
| 61 | return new Error( |
| 62 | // eslint-disable-next-line prefer-template |
| 63 | chalk.red( |
| 64 | `${chalk.red.bold('Outdated Jest version')}: The version of this ` + |
| 65 | 'snapshot file indicates that this project is meant to be used ' + |
| 66 | 'with a newer version of Jest. The snapshot file version ensures ' + |
| 67 | 'that all developers on a project are using the same version of ' + |
| 68 | 'Jest. Please update your version of Jest and re-run the tests.', |
| 69 | ) + |
| 70 | '\n\n' + |
| 71 | `Expected: v${SNAPSHOT_VERSION}\n` + |
| 72 | `Received: v${version}`, |
| 73 | ); |
| 74 | } |
| 75 | |
| 76 | if (guideLink !== SNAPSHOT_GUIDE_LINK) { |
| 77 | return new Error( |
| 78 | // eslint-disable-next-line prefer-template |
| 79 | chalk.red( |
| 80 | `${chalk.red.bold( |
| 81 | 'Outdated guide link', |
| 82 | )}: The snapshot guide link at the top of this snapshot is outdated. ` + |
| 83 | 'Please update all snapshots during this upgrade of Jest.', |
| 84 | ) + |