fix(MongoBinaryDownloadUrl): clamp ubuntu-year to highest supported year

fixes #846

Author: hasezoey

docs/guides/supported-systems.md

@@ -53,15 +53,15 @@ Depends on the distribution, many common ones should just work right out of the
 
 (uses mongodb's `ubuntu` release)<br/>
 Lowest supported Distribution version is `1404`<br/>
-Highest version is `2204`<br/>
+Highest version is `2204` (higher versions will be clamped to this value)<br/>
 Default version is `2204`<br/>
 Architectures Supported: `x86_64`, `arm64`(`aarch64`)
 
 :::note
 Lower Versions than `2004` may be used if mongodb dosnt provide binaries for an lower version of mongodb for an higher version of ubuntu
 :::
 :::note
-Since Mongodb `6.0.4` there are binaries for `2204`, any version before is mapped to `2204` (or earlier) and will require `libssl1.1` to be installed.  
+Since Mongodb `6.0.4` there are binaries for `2204`, any version before is mapped to `2004` (or earlier) and will require `libssl1.1` to be installed.  
 See [this mongodb issue](https://jira.mongodb.org/browse/SERVER-62300).
 :::
 
@@ -71,7 +71,7 @@ See [this mongodb issue](https://jira.mongodb.org/browse/SERVER-62300).
 
 (uses mongodb's `debian` release)<br/>
 Lowest supported Distribution version is `71`<br/>
-Highest version is `11`<br/>
+Highest version is `11` (higher versions will be clamped to this value)<br/>
 Default version is `10` (when in `unstable` or `testing`, otherwise none)
 
 ### Fedora
@@ -80,7 +80,7 @@ Default version is `10` (when in `unstable` or `testing`, otherwise none)
 
 (uses mongodb's `rhel` release)<br/>
 Lowest supported Distribution version is `6`<br/>
-Highest version is `36` (see note)<br/>
+Highest version is `36` (see note) (higher versions will be clamped to this value)<br/>
 Default version is `34` (when above or equal to `34`, otherwise none)
 
 :::note
@@ -94,7 +94,7 @@ There are currently no newer mongodb builds that support the newer provided open
 
 (uses mongodb's `rhel` release)<br/>
 Lowest supported Distribution version is `5`<br/>
-Highest version is `9`<br/>
+Highest version is `9` (higher versions will be clamped to this value)<br/>
 Default version is `70`<br/>
 Architectures Supported: `x86_64`, `arm64`(`aarch64`)
 

packages/mongodb-memory-server-core/src/util/MongoBinaryDownloadUrl.ts

@@ -566,6 +566,24 @@ export class MongoBinaryDownloadUrl implements MongoBinaryDownloadUrlOpts {
       return 'ubuntu2004';
     }
 
+    // base case for higher than mongodb supported ubuntu versions
+    {
+      // TODO: try to keep this up-to-date to the latest mongodb supported ubuntu version
+      /**
+       * Highest ubuntu year supported by mongodb binaries
+       * @see https://www.mongodb.com/download-center/community/releases/archive
+       */
+      const highestUbuntuYear = 22; // 22 is the highest supported as of mongodb 7.0.4
+
+      if (ubuntuYear > highestUbuntuYear) {
+        log(
+          `getUbuntuVersionString: ubuntuYear "${ubuntuYear}" is higher than the currently supported mongodb year of "${highestUbuntuYear}", using highest known`
+        );
+
+        return 'ubuntu2204';
+      }
+    }
+
     // the "04" version always exists for ubuntu, use that as default
     return `ubuntu${ubuntuYear}04`;
   }

packages/mongodb-memory-server-core/src/util/__tests__/MongoBinaryDownloadUrl.test.ts

@@ -327,6 +327,23 @@ describe('MongoBinaryDownloadUrl', () => {
           }
         });
 
+        it('should clamp to highest supported ubuntu year', async () => {
+          // TODO: try to keep this up-to-date to the latest mongodb supported ubuntu version
+          const du = new MongoBinaryDownloadUrl({
+            platform: 'linux',
+            arch: 'x64',
+            version: '7.0.4', // highest released mongodb version
+            os: {
+              os: 'linux',
+              dist: 'ubuntu',
+              release: '23.04', // highest released ubuntu version
+            },
+          });
+          expect(await du.getDownloadUrl()).toBe(
+            'https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-ubuntu2204-7.0.4.tgz'
+          );
+        });
+
         describe('arm64', () => {
           it('for ubuntu arm64 4.0.25 (below 4.1.10)', async () => {
             const du = new MongoBinaryDownloadUrl({