Remove pytest dep (#338)

pytest is nice, but we've written all of our unittests so far with the
builtin unittest module. By doing a bit of test rearranging (using test/
as the directory and naming our test files `test_*.py`), we can use the
builtin runner and remove pytest from our deps.

Author: stefanvanburen

Makefile

@@ -10,7 +10,7 @@ BIN := .tmp/bin
 export PATH := $(BIN):$(PATH)
 export GOBIN := $(abspath $(BIN))
 export PYTHONPATH ?= gen
-CONFORMANCE_ARGS ?= --strict_message --expected_failures=tests/conformance/nonconforming.yaml --timeout 10s
+CONFORMANCE_ARGS ?= --strict_message --expected_failures=test/conformance/nonconforming.yaml --timeout 10s
 ADD_LICENSE_HEADER := $(BIN)/license-header \
 		--license-type apache \
 		--copyright-holder "Buf Technologies, Inc." \
@@ -20,7 +20,7 @@ PROTOVALIDATE_VERSION ?= v0.14.0
 # Version of the cel-spec that this implementation is conformant with
 # This should be kept in sync with the version in format_test.py
 CEL_SPEC_VERSION ?= v0.24.0
-TESTDATA_FILE := tests/testdata/string_ext_$(CEL_SPEC_VERSION).textproto
+TESTDATA_FILE := test/testdata/string_ext_$(CEL_SPEC_VERSION).textproto
 
 .PHONY: help
 help: ## Describe useful make targets
@@ -46,22 +46,22 @@ generate: $(BIN)/buf $(BIN)/license-header ## Regenerate code and license header
 .PHONY: format
 format: install $(BIN)/license-header ## Format code
 	$(ADD_LICENSE_HEADER)
-	uv run -- ruff format protovalidate tests
-	uv run -- ruff check --fix protovalidate tests
+	uv run -- ruff format protovalidate test
+	uv run -- ruff check --fix protovalidate test
 
 .PHONY: test
 test: generate install gettestdata ## Run unit tests
-	uv run -- pytest
+	uv run -- python -m unittest
 
 .PHONY: conformance
 conformance: $(BIN)/protovalidate-conformance generate install ## Run conformance tests
-	protovalidate-conformance $(CONFORMANCE_ARGS) uv -- run python3 -m tests.conformance.runner
+	protovalidate-conformance $(CONFORMANCE_ARGS) uv -- run python3 -m test.conformance.runner
 
 .PHONY: lint
 lint: install ## Lint code
-	uv run -- ruff format --check --diff protovalidate tests
+	uv run -- ruff format --check --diff protovalidate test
 	uv run -- mypy protovalidate
-	uv run -- ruff check protovalidate tests
+	uv run -- ruff check protovalidate test
 	uv sync --locked
 
 .PHONY: install

pyproject.toml

@@ -32,7 +32,6 @@ Issues = "https://github.com/bufbuild/protovalidate-python/issues"
 
 [dependency-groups]
 dev = [
-	"pytest",
 	"mypy",
 	"ruff",
 	"types-protobuf==6.30.2.20250503",

tests/__init__.py renamed to test/__init__.py

@@ -86,9 +86,9 @@ class TestFormat(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         # The test data from the cel-spec conformance tests
-        cel_test_data = load_test_data(f"tests/testdata/string_ext_{CEL_SPEC_VERSION}.textproto")
+        cel_test_data = load_test_data(f"test/testdata/string_ext_{CEL_SPEC_VERSION}.textproto")
         # Our supplemental tests of functionality not in the cel conformance file, but defined in the spec.
-        supplemental_test_data = load_test_data("tests/testdata/string_ext_supplemental.textproto")
+        supplemental_test_data = load_test_data("test/testdata/string_ext_supplemental.textproto")
 
         # Combine the test data from both files into one
         sections = cel_test_data.section