test[next]: simplify boilerplate for fieldview single feature tests

.pre-commit-config.yaml

@@ -130,7 +130,14 @@ repos:
       tests/cartesian_tests/integration_tests/multi_feature_tests/utils.py |
       tests/cartesian_tests/integration_tests/feature_tests/test_call_interface.py |
       tests/cartesian_tests/unit_tests/frontend_tests/test_gtscript_frontend.py |
-      tests/next_tests/.*
+      tests/next_tests/unit_tests/.* |
+      tests/next_tests/integration_tests/multi_feature_tests/.* |
+      tests/next_tests/integration_tests/feature_tests/ffront_tests/.* |
+      tests/next_tests/integration_tests/feature_tests/iterator_tests/.* |
+      tests/next_tests/integration_tests/feature_tests/otf_tests/.* |
+      tests/next_tests/integration_tests/feature_tests/math_builtin_test_data.py |
+      tests/next_tests/past_common_fixtures.py |
+      tests/next_tests/toy_connectivity.py |
       )$
 
 - repo: https://github.com/pre-commit/mirrors-mypy
@@ -187,5 +194,15 @@ repos:
       build/.* |
       ci/.* |
       docs/.* |
+      tests/conftest.py |
+      tests/cartesian_tests/.* |
+      tests/next_tests/unit_tests/.* |
+      tests/next_tests/integration_tests/multi_feature_tests/.* |
+      tests/next_tests/integration_tests/feature_tests/ffront_tests/.* |
+      tests/next_tests/integration_tests/feature_tests/iterator_tests/.* |
+      tests/next_tests/integration_tests/feature_tests/otf_tests/.* |
+      tests/next_tests/integration_tests/feature_tests/math_builtin_test_data.py |
+      tests/next_tests/past_common_fixtures.py |
+      tests/next_tests/toy_connectivity.py |
       tests/.*
       )$

CODING_GUIDELINES.md

@@ -132,6 +132,8 @@ Each test suite should follow the following structure:
 
 Temporarily it may be allowed to split unit tests for a module into multiple `test_<module>_<feature>.py` test modules. This should be taken as a reason to think about splitting the source module though.
 
+Temporarily, tests for testing utilities can be placed next to the module containing them, with the name `test_util_<module>.py`. This should be taken as a hint that the tested utils should be moved into the library.
+
 TODO: add missing test conventions.
 
 <!--

pyproject.toml

@@ -224,7 +224,22 @@ skip_glob = ['*.venv/**', '_local/**']
 # -- mypy  --
 [tool.mypy]
 disallow_incomplete_defs = true
-exclude = ['^setup\.py$', '^build/.*py$', '^ci/*.py$', '^tests/*.py$']
+exclude = [
+  '^setup\.py$',
+  '^build/.*py$',
+  '^ci/*.py$',
+  '^tests/cartesian_tests/*.py$',
+  '^tests/storage_tests/*.py$',
+  '^tests/eve_tests/*.py$',
+  '^tests/next_tests/unit_tests/*.py$',
+  '^tests/next_tests/integration_tests/multi_feature_tests/*.py$',
+  '^tests/next_tests/integration_tests/feature_tests/ffront_tests/*.py$',
+  '^tests/next_tests/integration_tests/feature_tests/iterator_tests/*.py$',
+  '^tests/next_tests/integration_tests/feature_tests/otf_tests/*.py$',
+  '^tests/next_tests/integration_tests/feature_tests/math_builtin_test_data.py$',
+  '^tests/next_tests/past_common_fixtures.py$',
+  '^tests/next_tests/toy_connectivity.py$'
+]
 ignore_missing_imports = true
 install_types = true
 namespace_packages = false

src/gt4py/next/common.py

@@ -37,7 +37,7 @@
 
 DimT = TypeVar("DimT", bound="Dimension")
 DimsT = TypeVar("DimsT", bound=Sequence["Dimension"])
-DT = TypeVar("DT", bound="DType")
+DT = TypeVar("DT", bound="Scalar")
 
 Scalar: TypeAlias = SupportsInt | SupportsFloat | np.int32 | np.int64 | np.float32 | np.float64
 

src/gt4py/next/ffront/decorator.py

@@ -238,14 +238,23 @@ def __post_init__(self):
                 f"The following closure variables are undefined: {', '.join(undefined_symbols)}"
             )
 
-    def with_backend(self, backend: ppi.ProgramExecutor) -> "Program":
+    def with_backend(self, backend: ppi.ProgramExecutor) -> Program:
         return Program(
             past_node=self.past_node,
             closure_vars=self.closure_vars,
             backend=backend,
             definition=self.definition,  # type: ignore[arg-type]  # mypy wrongly deduces definition as method here
         )
 
+    def with_grid_type(self, grid_type: GridType) -> Program:
+        return Program(
+            past_node=self.past_node,
+            closure_vars=self.closure_vars,
+            backend=self.backend,
+            definition=self.definition,
+            grid_type=grid_type,
+        )
+
     @functools.cached_property
     def _all_closure_vars(self) -> dict[str, Any]:
         return _get_closure_vars_recursively(self.closure_vars)