✨ Add custom CliRunner and Click imports

typer/__init__.py

@@ -5,4 +5,43 @@ __version__ = "0.0.1"
 from .main import Typer, run  # noqa
 from .params import Option, Argument  # noqa
 from .models import Context, TextFile, BinaryFileRead, BinaryFileWrite  # noqa
-from click import echo  # noqa
+
+# Utilities
+from click.utils import (  # noqa
+    echo,
+    get_binary_stream,
+    get_text_stream,
+    open_file,
+    format_filename,
+    get_app_dir,
+    get_os_args,
+)
+
+# Terminal functions
+from click.termui import (  # noqa
+    prompt,
+    confirm,
+    get_terminal_size,
+    echo_via_pager,
+    progressbar,
+    clear,
+    style,
+    unstyle,
+    secho,
+    edit,
+    launch,
+    getchar,
+    pause,
+)
+
+from click.exceptions import (  # noqa
+    ClickException,
+    UsageError,
+    BadParameter,
+    FileError,
+    Abort,
+    NoSuchOption,
+    BadOptionUsage,
+    BadArgumentUsage,
+    MissingParameter,
+)

typer/testing.py

@@ -0,0 +1,27 @@
+from click.testing import Result, CliRunner as ClickCliRunner  # noqa
+from typer.main import get_command as _get_command
+
+
+class CliRunner(ClickCliRunner):
+    def invoke(
+        self,
+        cli,
+        args=None,
+        input=None,
+        env=None,
+        catch_exceptions=True,
+        color=False,
+        mix_stderr=False,
+        **extra
+    ) -> Result:
+        use_cli = _get_command(cli)
+        return super().invoke(
+            use_cli,
+            args=args,
+            input=input,
+            env=env,
+            catch_exceptions=catch_exceptions,
+            color=color,
+            mix_stderr=mix_stderr,
+            **extra
+        )