Throw in test mode if can't compute git version

lib/init-action.js

@@ -91565,7 +91565,7 @@ async function getGitVersionOrThrow() {
     "Failed to get git version."
   );
   const match = stdout.match(/^git version ((\d+\.\d+\.\d+).*)$/);
-  if (match?.[1]) {
+  if (match?.[1] && match?.[2]) {
     return new GitVersionInfo(match[2], match[1]);
   }
   throw new Error(`Could not parse Git version from output: ${stdout.trim()}`);
@@ -92985,6 +92985,9 @@ async function initConfig(features, inputs) {
     await logGitVersionTelemetry(config, gitVersion);
   } catch (e) {
     logger.warning(`Could not determine Git version: ${getErrorMessage(e)}`);
+    if (isInTestMode()) {
+      throw e;
+    }
   }
   const { overlayDatabaseMode, useOverlayDatabaseCaching } = await getOverlayDatabaseMode(
     inputs.codeql,

src/config-utils.ts

@@ -53,6 +53,7 @@ import {
   checkDiskUsage,
   getCodeQLMemoryLimit,
   getErrorMessage,
+  isInTestMode,
 } from "./util";
 
 export * from "./config/db-config";
@@ -935,6 +936,10 @@ export async function initConfig(
     await logGitVersionTelemetry(config, gitVersion);
   } catch (e) {
     logger.warning(`Could not determine Git version: ${getErrorMessage(e)}`);
+    // Throw the error in test mode so it's more visible.
+    if (isInTestMode()) {
+      throw e;
+    }
   }
 
   // The choice of overlay database mode depends on the selection of languages

src/git-utils.ts

@@ -53,7 +53,7 @@ export async function getGitVersionOrThrow(): Promise<GitVersionInfo> {
   // Git version output can vary: "git version 2.40.0" or "git version 2.40.0.windows.1"
   // We capture just the major.minor.patch portion to ensure semver compatibility.
   const match = stdout.match(/^git version ((\d+\.\d+\.\d+).*)$/);
-  if (match?.[1]) {
+  if (match?.[1] && match?.[2]) {
     return new GitVersionInfo(match[2], match[1]);
   }
   throw new Error(`Could not parse Git version from output: ${stdout.trim()}`);