Make tests runnable from root.

.github/workflows/ci.yaml

@@ -32,10 +32,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -e '.[dev]'
-          pip install flake8
       - uses: chartboost/ruff-action@v1
       - name: Test with pytest
         run: |
-          # data contract resources are defined relative to tests
-          cd tests/
           pytest

README.md

@@ -648,7 +648,6 @@ pip install --upgrade pip setuptools wheel
 pip install -e '.[dev]'
 ruff check --fix
 ruff format --check
-cd tests/
 pytest
 ```
 

datacontract/lint/linters/field_reference_linter.py

@@ -1,5 +1,4 @@
-from datacontract.model.data_contract_specification import \
-    DataContractSpecification
+from datacontract.model.data_contract_specification import DataContractSpecification
 from ..lint import Linter, LinterResult
 
 

datacontract/lint/linters/primary_field_linter.py

@@ -1,5 +1,4 @@
-from datacontract.model.data_contract_specification import \
-    DataContractSpecification
+from datacontract.model.data_contract_specification import DataContractSpecification
 from ..lint import Linter, LinterResult
 
 

datacontract/lint/linters/valid_constraints_linter.py

@@ -1,5 +1,4 @@
-from datacontract.model.data_contract_specification import \
-    DataContractSpecification, Field
+from datacontract.model.data_contract_specification import DataContractSpecification, Field
 from ..lint import Linter, LinterResult
 
 

tests/conftest.py

@@ -0,0 +1,6 @@
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def change_test_dir(request, monkeypatch):
+    monkeypatch.chdir(request.fspath.dirname)