"""Tests for the examples module."""

import pytest

from regex_humanizer.examples import generate_examples, generate_match_examples


class TestGenerateExamples:
    def test_generate_literal_examples(self):
        examples = generate_examples("hello", count=3)
        assert len(examples) >= 1
        assert "hello" in examples

    def test_generate_character_class_examples(self):
        examples = generate_examples("[abc]", count=5)
        assert len(examples) > 0
        for example in examples:
            assert len(example) == 1
            assert example in "abc"

    def test_generate_quantifier_examples(self):
        examples = generate_examples("a*", count=3)
        assert len(examples) >= 1
        for example in examples:
            assert all(c == "a" for c in example)

    def test_generate_digit_examples(self):
        examples = generate_examples(r"\d+", count=3)
        assert len(examples) >= 1
        for example in examples:
            assert example.isdigit()

    def test_generate_word_examples(self):
        examples = generate_examples(r"\w+", count=3)
        assert len(examples) >= 1
        for example in examples:
            assert example.replace("_", "").isalnum()

    def test_generate_alternation_examples(self):
        examples = generate_examples("foo|bar", count=3)
        assert len(examples) >= 1
        for example in examples:
            assert example in ("foo", "bar")

    def test_generate_complex_pattern_examples(self):
        examples = generate_examples(r"\d{3}-\d{4}", count=3)
        assert len(examples) >= 1
        for example in examples:
            assert "-" in example

    def test_generate_invalid_pattern(self):
        examples = generate_examples("[unclosed", count=3)
        assert examples == []