diff --git a/test/_global/github-tokens-bashrc-d.sh b/test/_global/github-tokens-bashrc-d.sh
new file mode 100755
index 0000000..b9632c5
--- /dev/null
+++ b/test/_global/github-tokens-bashrc-d.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+# Test file for github-tokens bashrc-d functionality
+#
+# This test verifies that the config_bashrc_d function works correctly:
+# 1. It adds bashrc.d sourcing to .bashrc if it doesn't exist
+# 2. It does not add it twice if it already exists
+# 3. It works with an existing .bashrc
+
+set -e
+
+# Optional: Import test library bundled with the devcontainer CLI
+source dev-container-features-test-lib
+
+echo "🧪 Testing github-tokens bashrc-d script"
+
+# The command we want to run inside a clean subshell so we can modify HOME safely
+check "bashrc.d configuration is added to a new .bashrc" bash -c "
+    export HOME=\$(mktemp -d)
+    # the install script puts it at /usr/local/bin/github-tokens-bashrc-d
+    # in github-tokens.sh it is run by running /usr/local/bin/github-tokens-bashrc-d directly
+    /usr/local/bin/github-tokens-bashrc-d
+    test -f \"\$HOME/.bashrc\" && grep -q 'bashrc.d' \"\$HOME/.bashrc\" && test -d \"\$HOME/.bashrc.d\"
+"
+
+check "bashrc.d configuration is idempotent" bash -c "
+    export HOME=\$(mktemp -d)
+    /usr/local/bin/github-tokens-bashrc-d
+    LINES1=\$(wc -l < \"\$HOME/.bashrc\" || echo 0)
+    /usr/local/bin/github-tokens-bashrc-d
+    LINES2=\$(wc -l < \"\$HOME/.bashrc\" || echo 0)
+    test \"\$LINES1\" -eq \"\$LINES2\"
+"
+
+check "bashrc.d configuration works with an existing .bashrc" bash -c "
+    export HOME=\$(mktemp -d)
+    echo '# some comment' > \"\$HOME/.bashrc\"
+    /usr/local/bin/github-tokens-bashrc-d
+    grep -q 'bashrc.d' \"\$HOME/.bashrc\" && grep -q '# some comment' \"\$HOME/.bashrc\"
+"
+
+echo "✅ github-tokens bashrc-d script works correctly"
+
+# Report result
+reportResults
diff --git a/test/_global/scenarios.json b/test/_global/scenarios.json
index 44544e6..edc4165 100644
--- a/test/_global/scenarios.json
+++ b/test/_global/scenarios.json
@@ -82,6 +82,12 @@
             "GH_TOKEN": "ghp_permissive_token"
         }
    },
+   "github-tokens-bashrc-d": {
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu",
+        "features": {
+            "github-tokens": {}
+        }
+   },
   "mermaid_default": {
     "image": "mcr.microsoft.com/devcontainers/base:ubuntu",
     "features": {