Remove coding tests, edit noxfile tests docstring

Author: lbdreyer

lib/iris/tests/runner/_runner.py

@@ -35,27 +35,20 @@ class TestRunner:
         ("system-tests", "s", "Run the limited subset of system tests."),
         ("gallery-tests", "e", "Run the gallery code tests."),
         ("default-tests", "d", "Run the default tests."),
-        (
-            "coding-tests",
-            "c",
-            "Run the coding standards tests. (These are a "
-            "subset of the default tests.)",
-        ),
         (
             "num-processors=",
             "p",
             "The number of processors used for running " "the tests.",
         ),
         ("create-missing", "m", "Create missing test result files."),
-        ("coverage", "l", "Enable coverage testing"),
+        ("coverage", "c", "Enable coverage testing"),
     ]
     boolean_options = [
         "no-data",
         "system-tests",
         "stop",
         "gallery-tests",
         "default-tests",
-        "coding-tests",
         "create-missing",
         "coverage",
     ]
@@ -66,7 +59,6 @@ def initialize_options(self):
         self.system_tests = False
         self.gallery_tests = False
         self.default_tests = False
-        self.coding_tests = False
         self.num_processors = None
         self.create_missing = False
         self.coverage = False
@@ -87,8 +79,6 @@ def finalize_options(self):
             tests.append("system")
         if self.default_tests:
             tests.append("default")
-        if self.coding_tests:
-            tests.append("coding")
         if self.gallery_tests:
             tests.append("gallery")
         if not tests:
@@ -112,8 +102,6 @@ def run(self):
             tests.append("lib/iris/tests/system_test.py")
         if self.default_tests:
             tests.append("lib/iris/tests")
-        if self.coding_tests:
-            tests.append("lib/iris/tests/test_coding_standards.py")
         if self.gallery_tests:
             import iris.config
 

noxfile.py

@@ -175,8 +175,10 @@ def prepare_venv(session: nox.sessions.Session) -> None:
 @nox.session(python=PY_VER, venv_backend="conda")
 def tests(session: nox.sessions.Session):
     """
-    Perform iris system, integration and unit tests with coverage testing
-    enabled.
+    Perform iris system, integration and unit tests.
+
+    Coverage testing is enabled if the COVERAGE environment variable is set to
+    True.
 
     Parameters
     ----------