white_check_mark: Add coverage instructions to tests (#72)

* ✅ Add coverage instructions to tests

* 📝 Update docs note about coverage in features

* 🎨 Fix format

* 🎨 Update testing docs format

docs/features.md

@@ -78,12 +78,8 @@ The resulting CLI apps created with **Typer** have the nice features of many "pr
 
 But you can write simpler code with the benefits of modern Python.
 
-<!-- 
-
-TODO
-
-### Tested
+## Tested
 
 * 100% <abbr title="The amount of code that is automatically tested">test coverage</abbr>.
 * 100% <abbr title="Python type annotations, with this your editor and external tools can give you better support">type annotated</abbr> code base.
-* Used in production applications. -->
+* Used in production applications.

docs/tutorial/testing.md

@@ -92,7 +92,7 @@ collected 1 item
 
 ---> 100%
 
-test_main.py <span style="color: green;">.           [100%]</span>
+test_main.py <span style="color: green; white-space: pre;">.                                 [100%]</span>
 
 <span style="color: green;">================= 1 passed in 0.03s =================</span>
 ```

tests/test_completion/test_completion.py

@@ -24,7 +24,7 @@ def test_show_completion():
 def test_install_completion():
     bash_completion_path: Path = Path.home() / ".bash_completion"
     text = ""
-    if bash_completion_path.is_file():
+    if bash_completion_path.is_file():  # pragma: nocover
         text = bash_completion_path.read_text()
     result = subprocess.run(
         [

tests/test_completion/test_completion_install.py

@@ -83,7 +83,7 @@ def test_completion_install_fish():
     script_path = Path(mod.__file__)
     completion_path: Path = Path.home() / f".config/fish/completions/{script_path.name}.fish"
     text = ""
-    if completion_path.is_file():
+    if completion_path.is_file():  # pragma: nocover
         text = completion_path.read_text()
     result = subprocess.run(
         ["coverage", "run", mod.__file__, "--install-completion", "fish"],
@@ -114,7 +114,7 @@ def test_completion_install_powershell():
     completion_path: Path = Path.home() / f".config/powershell/Microsoft.PowerShell_profile.ps1"
     completion_path_bytes = f"{completion_path}\n".encode("windows-1252")
     text = ""
-    if completion_path.is_file():
+    if completion_path.is_file():  # pragma: nocover
         text = completion_path.read_text()
 
     with mock.patch.object(