#!/usr/bin/env python3
#
# Copyright (C) 2024 Wildfire Games.
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# of this software and associated documentation files (the "Software"), to deal
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# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
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# The above copyright notice and this permission notice shall be included in
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
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# THE SOFTWARE.

import unittest

from merge_rules import merge_rules


class TestMerge(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        cls.TEST_RULES = {
            "canvas2d": {
                "name": "canvas2d",
                "combinations": [[], [{"name": "USE_DESCRIPTOR_INDEXING", "value": "1"}]],
            }
        }

    def make_rules(self, program_name, combinations):
        return {program_name: {"name": program_name, "combinations": combinations}}

    def test_empty(self):
        self.assertDictEqual(merge_rules({}, {}), {})
        self.assertDictEqual(merge_rules(self.make_rules("A", []), {}), self.make_rules("A", []))
        self.assertDictEqual(merge_rules({}, self.make_rules("A", [])), self.make_rules("A", []))
        self.assertDictEqual(merge_rules(self.TEST_RULES, {}), self.TEST_RULES)
        self.assertDictEqual(merge_rules({}, self.TEST_RULES), self.TEST_RULES)

    def test_equal(self):
        self.assertDictEqual(merge_rules(self.TEST_RULES, self.TEST_RULES), self.TEST_RULES)

    def test_order(self):
        # We need to guarantee an order for reproducible builds.

        cmb_a = {"name": "A", "value": "1"}
        cmb_a2 = {"name": "A", "value": "2"}
        cmb_a3 = {"name": "A", "value": "3"}
        cmb_b = {"name": "B", "value": "1"}
        cmb_c = {"name": "C", "value": "1"}
        cmb_d = {"name": "D", "value": "1"}

        self.assertDictEqual(
            merge_rules(
                self.make_rules("A", [[cmb_c], [cmb_b]]),
                self.make_rules("A", [[cmb_b], [cmb_c], [cmb_a]]),
            ),
            self.make_rules("A", [[cmb_a], [cmb_b], [cmb_c]]),
        )

        self.assertDictEqual(
            merge_rules(
                self.make_rules("A", [[cmb_c], [cmb_a], [cmb_c], [cmb_c]]),
                self.make_rules("A", [[cmb_d], [cmb_b], [cmb_d]]),
            ),
            self.make_rules("A", [[cmb_a], [cmb_b], [cmb_c], [cmb_d]]),
        )

        self.assertDictEqual(
            merge_rules(
                self.make_rules("A", [[cmb_c], [cmb_a], [cmb_d], [cmb_c], [cmb_a3]]),
                self.make_rules("A", [[cmb_b], [cmb_a2], [cmb_a2]]),
            ),
            self.make_rules("A", [[cmb_a], [cmb_a2], [cmb_a3], [cmb_b], [cmb_c], [cmb_d]]),
        )

        self.assertDictEqual(
            merge_rules(
                self.make_rules("A", [[cmb_b, cmb_c], [cmb_a], [cmb_b, cmb_b], [cmb_b, cmb_c]]),
                self.make_rules("A", [[cmb_b], [cmb_b, cmb_a]]),
            ),
            self.make_rules(
                "A", [[cmb_a], [cmb_a, cmb_b], [cmb_b], [cmb_b, cmb_b], [cmb_b, cmb_c]]
            ),
        )