fix(builtin): fix a bug where the launcher produces incorrect runfiles path on windows (#3562)

Author: Derek Cormier

internal/node/launcher.sh

@@ -74,7 +74,12 @@ source "${RUNFILES_DIR:-/dev/null}/$f" 2>/dev/null || \
 # Case 6a is handled like case 3.
 if [ "${TEST_SRCDIR:-}" ]; then
     # Case 4, bazel has identified runfiles for us.
-    RUNFILES="$TEST_SRCDIR"
+    if [ "$(is_windows)" -eq "1" ]; then
+        # If Windows, normalize the path
+        RUNFILES=$(normalize_windows_path "$TEST_SRCDIR")
+    else
+        RUNFILES="$TEST_SRCDIR"
+    fi
 elif [ "${RUNFILES_MANIFEST_FILE:-}" ]; then
     if [ "$(is_windows)" -eq "1" ]; then
         # If Windows, normalize the path

internal/node/test/env.spec.js

@@ -58,12 +58,6 @@ describe('launcher.sh environment', function() {
       `${runfilesRoot}`,
       `${runfilesRoot}/build_bazel_rules_nodejs/node_modules`,
     ];
-    if (isWindows) {
-      expectedRoots.push(
-        process.env['RUNFILES'],
-        `${process.env['RUNFILES']}/build_bazel_rules_nodejs/node_modules`
-      );
-    }
     expectPathsToMatch(process.env['BAZEL_PATCH_ROOTS'].split(','), expectedRoots);
   });