Add tests for core feature to pytest-bdd

- Implement "the output should contain" step

Co-authored-by: Micah Jerome Ellison <micah.jerome.ellison@gmail.com>

pyproject.toml

@@ -65,6 +65,10 @@ force_sort_within_sections = true
 
 [tool.pytest.ini_options]
 minversion = "6.0"
+markers = [
+    "todo",
+]
+
 
 [build-system]
 requires = ["poetry>=1.1"]

tests/features/core.feature

@@ -6,3 +6,13 @@ Feature: Functionality of jrnl outside of actually handling journals
         Then we should get no error
         Then the output should match "^jrnl version v\d+\.\d+(\.\d+)?(-(alpha|beta)\d*)?"
 
+    Scenario: Running the diagnostic command
+        Given we use the config "simple.yaml"
+        When we run "jrnl --diagnostic"
+        Then the output should contain "jrnl"
+        And the output should contain "Python"
+        And the output should contain "OS"
+
+    @todo
+    Scenario: Listing available journals
+

tests/step_defs/conftest.py

@@ -91,3 +91,10 @@ def matches_std_output(regex, cli_run):
     out = cli_run["stdout"]
     matches = re.findall(regex, out)
     assert matches, f"\nRegex didn't match:\n{regex}\n{str(out)}\n{str(matches)}"
+
+
+@then(parse("the output should contain\n{text}"))
+@then(parse('the output should contain "{text}"'))
+def check_output_inline(text, cli_run):
+    assert text and text in cli_run['stdout']
+