tools/tint_gen/lut_test.py

#!/usr/bin/env python3
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"""Tests for tools/tint_gen/lut.py (ported from tools/src/lut/lut_test.go)."""

import os
import sys
import unittest

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

import lut


class LutTest(unittest.TestCase):

    def test_compact_with_fragments(self) -> None:
        table: lut.LUT[str] = lut.LUT()
        indices = [
            table.add(list("the life in your")),
            table.add(list("in your life that count")),
            table.add(list("In the end,")),
            table.add(list("the life in")),
            table.add(list("count. It's the")),
            table.add(list("years")),
            table.add(list("in your years.")),
            table.add(list("it's not the years in")),
            table.add(list("not the years")),
            table.add(list("not the years in your")),
            table.add(list("end, it's")),
        ]

        chars = table.compact()

        expect = (
            "In the end, it's not the years in your life that count. It's the"
            " life in your years.")
        got = "".join(chars)
        self.assertEqual(got, expect)

        expected_indices = [
            61,  # the life in your
            31,  # in your life that count
            0,  # In the end,
            61,  # the life in
            49,  # count. It's the
            25,  # years
            70,  # in your years.
            12,  # it's not the years in
            17,  # not the years
            17,  # not the years in your
            7,  # end, it's
        ]
        for i, p in enumerate(indices):
            self.assertIsNotNone(p)
            assert p is not None
            self.assertEqual(
                p.value,
                expected_indices[i],
                f"Index {i} was not expected. Expected {expected_indices[i]},"
                f" got {p.value}",
            )

    def test_empty_sequence_returns_none(self) -> None:
        table: lut.LUT[int] = lut.LUT()
        self.assertIsNone(table.add([]))
        self.assertEqual(table.compact(), [])


if __name__ == "__main__":
    unittest.main()