fix(e2e-tests): make version test independent of package.json files

`--version`, `version()` and `--build-info` all source their version
information differently. It should be sufficient to include a test to
verify that they all match, without having to rely on the specific
dependency from the e2e-test package.json file (which is in line with
the general idea that e2e tests should not actually depend on the
specific shell implementation and only test externally visible behavior
of that implementation).

Author: addaleax

packages/e2e-tests/test/e2e.spec.ts

@@ -33,15 +33,25 @@ describe('e2e', function () {
   const testServer = startSharedTestServer();
 
   describe('--version', function () {
-    it('shows version and matches @mongosh/cli-repl', async function () {
-      const expectedPackageVersion: string =
-        // eslint-disable-next-line @typescript-eslint/no-var-requires
-        require('../package.json')['dependencies']['@mongosh/cli-repl'];
+    it('gives the same result with version(), --version and --build-info', async function () {
+      // version() sources its version data from the shell-api package's generated files,
+      // --version from the cli-repl package.json and --build-info from the generated build-info.json
+      // (if available), which should all match.
+      const shell = this.startTestShell({ args: ['--nodb'] });
+      const versionFromShellApi = (await shell.executeLine('version()'))
+        .replace(/>/g, '')
+        .trim();
 
-      const shell = this.startTestShell({ args: ['--version'] });
-      await shell.waitForSuccessfulExit();
+      const versionShell = this.startTestShell({ args: ['--version'] });
+      await versionShell.waitForSuccessfulExit();
+      const versionFromCliFlag = versionShell.output.trim();
+
+      const buildInfoShell = this.startTestShell({ args: ['--build-info'] });
+      await buildInfoShell.waitForSuccessfulExit();
+      const versionFromBuildInfo = JSON.parse(buildInfoShell.output).version;
 
-      shell.assertContainsOutput(expectedPackageVersion);
+      expect(versionFromShellApi).to.equal(versionFromCliFlag);
+      expect(versionFromCliFlag).to.equal(versionFromBuildInfo);
     });
   });
 
@@ -479,24 +489,6 @@ describe('e2e', function () {
       await client.close();
     });
 
-    it('version', async function () {
-      const expectedPackageVersion: string =
-        // eslint-disable-next-line @typescript-eslint/no-var-requires
-        require('../package.json')['dependencies']['@mongosh/cli-repl'];
-
-      expect(expectedPackageVersion).not.null;
-
-      const versionShell = this.startTestShell({ args: ['--version'] });
-      await versionShell.waitForSuccessfulExit();
-
-      const versionFromShell = versionShell.output;
-
-      await shell.executeLine('version()');
-      shell.assertNoErrors();
-      shell.assertContainsOutput(expectedPackageVersion);
-      shell.assertContainsOutput(versionFromShell);
-    });
-
     it('fle addon is available', async function () {
       const result = await shell.executeLine(
         '`<${typeof db._mongo._serviceProvider.createClientEncryption}>`'