✨ Add support for Click 8 while keeping compatibility with Click 7

.github/workflows/test.yml

@@ -11,18 +11,25 @@ jobs:
     strategy:
       matrix:
         python-version: [3.6, 3.7, 3.8]
+        click-7: [true, false]
       fail-fast: false
 
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install Flit
         run: pip install flit
       - name: Install Dependencies
         run: flit install --deps=develop --symlink
+      - name: Install Click 7
+        if: matrix.click-7
+        run: pip install "click<8.0.0"
+      - name: Lint
+        if: ${{ matrix.python-version != '3.6' && matrix.click-7 == false }}
+        run: bash scripts/lint.sh
       - name: Test
         run: bash scripts/test.sh
       - name: Upload coverage

docs/tutorial/using-click.md

@@ -99,17 +99,7 @@ $ python main.py
 // Notice we have both subcommands, top and hello
 Usage: main.py [OPTIONS] COMMAND [ARGS]...
 
-  Typer app, including Click subapp
-
-Options:
-  --install-completion  Install completion for the current shell.
-  --show-completion     Show completion for the current shell, to copy it or customize the installation.
-
-  --help                Show this message and exit.
-
-Commands:
-  hello  Simple program that greets NAME for a total of COUNT times.
-  top    Top level command, form Typer
+Error: Missing command.
 
 // Call the Typer part
 $ python main.py top

pyproject.toml

@@ -27,7 +27,7 @@ classifiers = [
     "License :: OSI Approved :: MIT License"
     ]
 requires = [
-    "click >= 7.1.1, <7.2.0"
+    "click >= 7.1.1, <9.0.0"
 ]
 description-file = "README.md"
 requires-python = ">=3.6"
@@ -43,7 +43,7 @@ test = [
     "coverage >=5.2,<6.0",
     "pytest-xdist >=1.32.0,<2.0.0",
     "pytest-sugar >=0.9.4,<0.10.0",
-    "mypy ==0.782",
+    "mypy ==0.910",
     "black >=19.10b0,<20.0b0",
     "isort >=5.0.6,<6.0.0"
 ]

scripts/get-pwsh-activate.sh

@@ -0,0 +1 @@
+curl https://raw.githubusercontent.com/python/cpython/main/Lib/venv/scripts/common/Activate.ps1 -o Activate.ps1

scripts/test.sh

@@ -4,6 +4,5 @@ set -e
 set -x
 
 bash ./scripts/test-files.sh
-bash ./scripts/lint.sh
 # Use xdist-pytest --forked to ensure modified sys.path to import relative modules in examples keeps working
 pytest --cov=typer --cov=tests --cov=docs_src --cov-report=term-missing --cov-report=xml -o console_output_style=progress --forked --numprocesses=auto ${@}

tests/assets/compat_click7_8.py

@@ -0,0 +1,29 @@
+from typing import List
+
+import click
+import typer
+
+app = typer.Typer()
+
+
+def shell_complete(
+    ctx: click.Context, param: click.Parameter, incomplete: str
+) -> List[str]:
+    return ["Jonny"]
+
+
+@app.command(context_settings={"auto_envvar_prefix": "TEST"})
+def main(
+    name: str = typer.Option("John", hidden=True),
+    lastname: str = typer.Option("Doe", "/lastname", show_default="Mr. Doe"),
+    age: int = typer.Option(lambda: 42, show_default=True),
+    nickname: str = typer.Option("", shell_complete=shell_complete),
+):
+    """
+    Say hello.
+    """
+    typer.echo(f"Hello {name} {lastname}, it seems you have {age}, {nickname}")
+
+
+if __name__ == "__main__":
+    app()

tests/test_compat/test_option_get_help.py

@@ -0,0 +1,41 @@
+import os
+import subprocess
+
+from typer.testing import CliRunner
+
+from tests.assets import compat_click7_8 as mod
+
+runner = CliRunner()
+
+
+def test_hidden_option():
+    result = runner.invoke(mod.app, ["--help"])
+    assert result.exit_code == 0
+    assert "Say hello" in result.output
+    assert "--name" not in result.output
+    assert "/lastname" in result.output
+    assert "TEST_LASTNAME" in result.output
+    assert "(dynamic)" in result.output
+
+
+def test_coverage_call():
+    result = runner.invoke(mod.app)
+    assert result.exit_code == 0
+    assert "Hello John Doe, it seems you have 42" in result.output
+
+
+def test_completion():
+    result = subprocess.run(
+        ["coverage", "run", mod.__file__, " "],
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        encoding="utf-8",
+        env={
+            **os.environ,
+            "_COMPAT_CLICK7_8.PY_COMPLETE": "complete_zsh",
+            "_TYPER_COMPLETE_ARGS": "compat_click7_8.py --nickname ",
+            "_TYPER_COMPLETE_TESTING": "True",
+        },
+    )
+    # TODO: when deprecating Click 7, remove second option
+    assert "Jonny" in result.stdout or "_files" in result.stdout

tests/test_completion/test_completion.py

@@ -106,7 +106,7 @@ def test_completion_source_invalid_instruction():
             "_TYPER_COMPLETE_TESTING": "True",
         },
     )
-    assert "Hello World" in result.stdout
+    assert 'Completion instruction "explode" not supported.' in result.stderr
 
 
 def test_completion_source_zsh():

tests/test_completion/test_completion_install.py

@@ -26,7 +26,11 @@ def test_completion_install_no_shell():
             "_TYPER_COMPLETE_TEST_DISABLE_SHELL_DETECTION": "True",
         },
     )
-    assert "Error: --install-completion option requires an argument" in result.stderr
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Error: Option '--install-completion' requires an argument" in result.stderr
+        or "Error: --install-completion option requires an argument" in result.stderr
+    )
 
 
 def test_completion_install_bash():

tests/test_completion/test_completion_show.py

@@ -16,7 +16,11 @@ def test_completion_show_no_shell():
             "_TYPER_COMPLETE_TEST_DISABLE_SHELL_DETECTION": "True",
         },
     )
-    assert "Error: --show-completion option requires an argument" in result.stderr
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Error: Option '--show-completion' requires an argument" in result.stderr
+        or "Error: --show-completion option requires an argument" in result.stderr
+    )
 
 
 def test_completion_show_bash():

tests/test_others.py

@@ -141,11 +141,14 @@ def test_completion_untyped_parameters():
         },
     )
     assert "info name is: completion_no_types.py" in result.stderr
-    assert "args is: ['--name', 'Sebastian', '--name']" in result.stderr
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "args is: []" in result.stderr
+        or "args is: ['--name', 'Sebastian', '--name']" in result.stderr
+    )
     assert "incomplete is: Ca" in result.stderr
     assert '"Camila":"The reader of books."' in result.stdout
     assert '"Carlos":"The writer of scripts."' in result.stdout
-    assert '"Sebastian":"The type hints guy."' in result.stdout
 
     result = subprocess.run(
         ["coverage", "run", str(file_path)],
@@ -171,11 +174,14 @@ def test_completion_untyped_parameters_different_order_correct_names():
         },
     )
     assert "info name is: completion_no_types_order.py" in result.stderr
-    assert "args is: ['--name', 'Sebastian', '--name']" in result.stderr
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "args is: []" in result.stderr
+        or "args is: ['--name', 'Sebastian', '--name']" in result.stderr
+    )
     assert "incomplete is: Ca" in result.stderr
     assert '"Camila":"The reader of books."' in result.stdout
     assert '"Carlos":"The writer of scripts."' in result.stdout
-    assert '"Sebastian":"The type hints guy."' in result.stdout
 
     result = subprocess.run(
         ["coverage", "run", str(file_path)],
@@ -213,8 +219,12 @@ def main(arg1, arg2: int, arg3: "int", arg4: bool = False, arg5: "bool" = False)
         typer.echo(f"arg5: {type(arg5)} {arg5}")
 
     result = runner.invoke(app, ["Hello", "2", "invalid"])
+    # TODO: when deprecating Click 7, remove second option
+
     assert (
-        "Error: Invalid value for 'ARG3': invalid is not a valid integer"
+        "Error: Invalid value for 'ARG3': 'invalid' is not a valid integer"
+        in result.stdout
+        or "Error: Invalid value for 'ARG3': invalid is not a valid integer"
         in result.stdout
     )
     result = runner.invoke(app, ["Hello", "2", "3", "--arg4", "--arg5"])

tests/test_tutorial/test_commands/test_callback/test_tutorial001.py

@@ -49,7 +49,11 @@ def test_delete_verbose():
 def test_wrong_verbose():
     result = runner.invoke(app, ["delete", "--verbose", "Camila"])
     assert result.exit_code != 0
-    assert "Error: no such option: --verbose" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Error: No such option: --verbose" in result.output
+        or "Error: no such option: --verbose" in result.output
+    )
 
 
 def test_script():

tests/test_tutorial/test_commands/test_help/test_tutorial001.py

@@ -66,28 +66,44 @@ def test_create():
 def test_delete():
     result = runner.invoke(app, ["delete", "Camila"], input="y\n")
     assert result.exit_code == 0
-    assert "Are you sure you want to delete the user? [y/N]:" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete the user? [y/n]:" in result.output
+        or "Are you sure you want to delete the user? [y/N]:" in result.output
+    )
     assert "Deleting user: Camila" in result.output
 
 
 def test_no_delete():
     result = runner.invoke(app, ["delete", "Camila"], input="n\n")
     assert result.exit_code == 0
-    assert "Are you sure you want to delete the user? [y/N]:" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete the user? [y/n]:" in result.output
+        or "Are you sure you want to delete the user? [y/N]:" in result.output
+    )
     assert "Operation cancelled" in result.output
 
 
 def test_delete_all():
     result = runner.invoke(app, ["delete-all"], input="y\n")
     assert result.exit_code == 0
-    assert "Are you sure you want to delete ALL users? [y/N]:" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete ALL users? [y/n]:" in result.output
+        or "Are you sure you want to delete ALL users? [y/N]:" in result.output
+    )
     assert "Deleting all users" in result.output
 
 
 def test_no_delete_all():
     result = runner.invoke(app, ["delete-all"], input="n\n")
     assert result.exit_code == 0
-    assert "Are you sure you want to delete ALL users? [y/N]:" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete ALL users? [y/n]:" in result.output
+        or "Are you sure you want to delete ALL users? [y/N]:" in result.output
+    )
     assert "Operation cancelled" in result.output
 
 

tests/test_tutorial/test_commands/test_options/test_tutorial001.py

@@ -28,35 +28,55 @@ def test_create():
 def test_delete():
     result = runner.invoke(app, ["delete", "Camila"], input="y\n")
     assert result.exit_code == 0
-    assert "Are you sure you want to delete the user? [y/N]:" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete the user? [y/n]:" in result.output
+        or "Are you sure you want to delete the user? [y/N]:" in result.output
+    )
     assert "Deleting user: Camila" in result.output
 
 
 def test_no_delete():
     result = runner.invoke(app, ["delete", "Camila"], input="n\n")
     assert result.exit_code == 0
-    assert "Are you sure you want to delete the user? [y/N]:" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete the user? [y/n]:" in result.output
+        or "Are you sure you want to delete the user? [y/N]:" in result.output
+    )
     assert "Operation cancelled" in result.output
 
 
 def test_delete_all():
     result = runner.invoke(app, ["delete-all"], input="y\n")
     assert result.exit_code == 0
-    assert "Are you sure you want to delete ALL users? [y/N]:" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete ALL users? [y/n]:" in result.output
+        or "Are you sure you want to delete ALL users? [y/N]:" in result.output
+    )
     assert "Deleting all users" in result.output
 
 
 def test_no_delete_all():
     result = runner.invoke(app, ["delete-all"], input="n\n")
     assert result.exit_code == 0
-    assert "Are you sure you want to delete ALL users? [y/N]:" in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete ALL users? [y/n]:" in result.output
+        or "Are you sure you want to delete ALL users? [y/N]:" in result.output
+    )
     assert "Operation cancelled" in result.output
 
 
 def test_delete_all_force():
     result = runner.invoke(app, ["delete-all", "--force"])
     assert result.exit_code == 0
-    assert "Are you sure you want to delete ALL users? [y/N]:" not in result.output
+    # TODO: when deprecating Click 7, remove second option
+    assert (
+        "Are you sure you want to delete ALL users? [y/n]:" not in result.output
+        or "Are you sure you want to delete ALL users? [y/N]:" not in result.output
+    )
     assert "Deleting all users" in result.output
 
 

tests/test_tutorial/test_multiple_values/test_arguments_with_multiple_values/test_tutorial002.py

@@ -29,7 +29,12 @@ def test_defaults():
 def test_invalid_args():
     result = runner.invoke(app, ["Draco", "Hagrid"])
     assert result.exit_code != 0
-    assert "Error: argument names takes 3 values" in result.stdout
+    # TODO: when deprecating Click 7, remove second option
+
+    assert (
+        "Error: Argument 'names' takes 3 values" in result.stdout
+        or "Error: argument names takes 3 values" in result.stdout
+    )
 
 
 def test_valid_args():

tests/test_tutorial/test_multiple_values/test_options_with_multiple_values/test_tutorial001.py

@@ -34,7 +34,12 @@ def test_user_2():
 def test_invalid_user():
     result = runner.invoke(app, ["--user", "Camila", "50"])
     assert result.exit_code != 0
-    assert "Error: --user option requires 3 arguments" in result.output
+    # TODO: when deprecating Click 7, remove second option
+
+    assert (
+        "Error: Option '--user' requires 3 arguments" in result.output
+        or "Error: --user option requires 3 arguments" in result.output
+    )
 
 
 def test_script():

tests/test_tutorial/test_options/test_completion/test_tutorial008.py

@@ -28,7 +28,8 @@ def test_completion():
     assert '"Camila":"The reader of books."' in result.stdout
     assert '"Carlos":"The writer of scripts."' in result.stdout
     assert '"Sebastian":"The type hints guy."' in result.stdout
-    assert "['--name']" in result.stderr
+    # TODO: when deprecating Click 7, remove second option
+    assert "[]" in result.stderr or "['--name']" in result.stderr
 
 
 def test_1():

tests/test_tutorial/test_options/test_completion/test_tutorial009.py

@@ -28,7 +28,8 @@ def test_completion():
     assert '"Camila":"The reader of books."' in result.stdout
     assert '"Carlos":"The writer of scripts."' in result.stdout
     assert '"Sebastian":"The type hints guy."' not in result.stdout
-    assert "['--name', 'Sebastian', '--name']" in result.stderr
+    # TODO: when deprecating Click 7, remove second option
+    assert "[]" in result.stderr or "['--name', 'Sebastian', '--name']" in result.stderr
 
 
 def test_1():