add decorator for cli context

tests/test_cli.py

@@ -0,0 +1,58 @@
+import click
+import yaml
+
+import dbyaml.cli
+from dbyaml.cli import pass_context, uses_decorator  # ty: ignore[unresolved-import]
+
+
+def test_uses_decorator_cli():
+  assert uses_decorator("main", "pass_context", dbyaml.cli.__file__)
+  assert uses_decorator("list", "pass_context", dbyaml.cli.__file__)
+
+
+def test_uses_decorator_wo():
+  @click.command
+  @pass_context
+  def cli_wo(ctx): ...
+
+  assert uses_decorator("cli_wo", "pass_context", __file__)
+
+
+def test_uses_decorator_wo_long():
+  @click.command
+  @dbyaml.cli.pass_context  # ty: ignore[unresolved-attribute]
+  def cli_wh_long(ctx): ...
+
+  assert dbyaml.cli.uses_decorator("cli_wh_long", "pass_context", __file__)  # ty: ignore[unresolved-attribute]
+
+
+def test_uses_decorator_call():
+  @click.command
+  @pass_context()
+  def cli_call(ctx): ...
+
+  assert uses_decorator("cli_call", "pass_context()", __file__)
+
+
+def test_uses_decorator_obj():
+  @click.command
+  @pass_context(False)
+  def cli_obj(ctx): ...
+
+  assert uses_decorator("cli_obj", "pass_context()", __file__)
+
+
+def test_uses_decorator_mod():
+  @click.command
+  @pass_context(yaml)
+  def cli_mod(ctx): ...
+
+  assert uses_decorator("cli_mod", "pass_context()", __file__)
+
+
+def test_uses_decorator_func():
+  @click.command
+  @pass_context(yaml.dump)
+  def cli_func(ctx): ...
+
+  assert uses_decorator("cli_func", "pass_context()", __file__)