2 files changed, 11 insertions, 2 deletions
diff --git a/tests/languages/ruby_test.py b/tests/languages/ruby_test.py
index 6397a43..5d767b2 100644
--- a/tests/languages/ruby_test.py
+++ b/tests/languages/ruby_test.py
@@ -91,8 +91,8 @@ def test_ruby_additional_deps(tmp_path):
         tmp_path,
         ruby,
         'ruby -e',
-        args=('require "tins"',),
-        deps=('tins',),
+        args=('require "jmespath"',),
+        deps=('jmespath',),
     )
     assert ret == (0, b'')
 
diff --git a/tests/languages/rust_test.py b/tests/languages/rust_test.py
index 5c17f5b..52e3561 100644
--- a/tests/languages/rust_test.py
+++ b/tests/languages/rust_test.py
@@ -9,6 +9,7 @@ from pre_commit import parse_shebang
 from pre_commit.languages import rust
 from pre_commit.store import _make_local_repo
 from testing.language_helpers import run_language
+from testing.util import cwd
 
 ACTUAL_GET_DEFAULT_VERSION = rust.get_default_version.__wrapped__
 
@@ -29,6 +30,14 @@ def test_uses_default_when_rust_is_not_available(cmd_output_b_mck):
     assert ACTUAL_GET_DEFAULT_VERSION() == C.DEFAULT
 
 
+def test_selects_system_even_if_rust_toolchain_toml(tmp_path):
+    toolchain_toml = '[toolchain]\nchannel = "wtf"\n'
+    tmp_path.joinpath('rust-toolchain.toml').write_text(toolchain_toml)
+
+    with cwd(tmp_path):
+        assert ACTUAL_GET_DEFAULT_VERSION() == 'system'
+
+
 def _make_hello_world(tmp_path):
     src_dir = tmp_path.joinpath('src')
     src_dir.mkdir()