diff --git a/rust2rpm/tests/test_generator.py b/rust2rpm/tests/test_generator.py
index 69468c2..5fc9d0f 100644
--- a/rust2rpm/tests/test_generator.py
+++ b/rust2rpm/tests/test_generator.py
@@ -77,11 +77,77 @@ def test_spec_file_render(filename: str, target: str, tmp_path: Path):
 
 
 @pytest.mark.parametrize(
-    "filename,features,expected", [
-        ("cxx-build-1.0.71.toml", [], "cxx-build-1.0.71.toml.patched"),
-        ("nix-0.24.1.toml", [], "nix-0.24.1.toml.patched"),
-        ("tokio-1.19.2.toml", [], "tokio-1.19.2.toml.patched"),
-    ]
+    "filename,features,expected",
+    [
+        (
+            "cxx-build-1.0.71.toml",
+            [
+                "experimental-async-fn",
+                "parallel",
+            ],
+            "cxx-build-1.0.71.toml.patched",
+        ),
+        (
+            "nix-0.24.1.toml",
+            [
+                "acct",
+                "aio",
+                "default",
+                "dir",
+                "env",
+                "event",
+                "feature",
+                "fs",
+                "hostname",
+                "inotify",
+                "ioctl",
+                "kmod",
+                "mman",
+                "mount",
+                "mqueue",
+                "net",
+                "personality",
+                "poll",
+                "process",
+                "pthread",
+                "ptrace",
+                "quota",
+                "reboot",
+                "resource",
+                "sched",
+                "signal",
+                "socket",
+                "term",
+                "time",
+                "ucontext",
+                "uio",
+                "user",
+                "zerocopy",
+            ],
+            "nix-0.24.1.toml.patched",
+        ),
+        (
+            "tokio-1.19.2.toml",
+            [
+                "default",
+                "fs",
+                "full",
+                "io-std",
+                "io-util",
+                "macros",
+                "net",
+                "process",
+                "rt",
+                "rt-multi-thread",
+                "signal",
+                "stats",
+                "sync",
+                "test-util",
+                "time",
+            ],
+            "tokio-1.19.2.toml.patched",
+        ),
+    ],
 )
 def test_drop_foreign_dependencies(filename: str, features: list[str], expected: str):
     before_path = resources.files("rust2rpm.tests.samples").joinpath(filename)