Refactor tests based on vers test schema

Signed-off-by: Keshav Priyadarshi <git@keshav.space>

Author: keshav-space

tests/__init__.py

@@ -0,0 +1,77 @@
+#
+# Copyright (c) nexB Inc. and others.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Visit https://aboutcode.org and https://github.com/aboutcode-org/univers for support and download.
+
+from typing import NamedTuple
+from typing import Union
+
+
+class SchemaDrivenVersTest(NamedTuple):
+    test_type: str
+    test_group: str
+    input: dict
+    expected_output: Union[list, bool]
+
+    @classmethod
+    def from_data(cls, data: dict):
+        return cls(**data)
+
+    def assert_result(self):
+        assert self.result == self.expected_output
+
+    @property
+    def result(self):
+        if self.test_type == "equality":
+            return self.equality()
+        elif self.test_type == "comparison":
+            return self.comparison()
+
+        raise Exception(f"Unknown test_type: {self.test_type}")
+
+    def equality(self):
+        raise NotImplementedError
+
+    def comparison(self):
+        raise NotImplementedError
+
+    @property
+    def input_scheme(self):
+        return self.input["input_scheme"]
+
+    @property
+    def input_native_range(self):
+        return self.input["native_range"]
+
+    @property
+    def input_version1(self):
+        return self.input["versions"][0]
+
+    @property
+    def input_version2(self):
+        return self.input["versions"][1]
+
+
+def get_test_data_comp(scheme, versions, output):
+    return {
+        "test_group": "advanced",
+        "test_type": "comparison",
+        "input": {
+            "input_scheme": scheme,
+            "versions": versions,
+        },
+        "expected_output": output,
+    }
+
+
+def get_test_data_eq(scheme, versions, output):
+    return {
+        "test_group": "advanced",
+        "test_type": "equality",
+        "input": {
+            "input_scheme": scheme,
+            "versions": versions,
+        },
+        "expected_output": output,
+    }