module lorem

fn test_lorem_generate_basic() {
    output := generate(LoremCfg{
        paragraphs:              2
        sentences_per_paragraph: 3
        words_per_sentence:      5
    })
    assert output.len > 0
    // 2 paragraphs should be separated by "\n\n"
    assert output.count('\n\n') == 1
}

fn test_lorem_generate_deterministic() {
    cfg := LoremCfg{
        rng_seed:   12345
        paragraphs: 1
    }
    out1 := generate(cfg)
    out2 := generate(cfg)
    assert out1 == out2
}

fn test_lorem_generate_counts() {
    cfg := LoremCfg{
        paragraphs: 3
    }
    output := generate(cfg)
    // There should be 2 separators for 3 paragraphs
    assert output.count('\n\n') == 2
}

fn test_lorem_custom_corpus() {
    // 'bard' is shakespeare
    cfg := LoremCfg{
        corpus_name: 'bard'
        rng_seed:    999
        paragraphs:  1
    }
    output := generate(cfg)
    assert output.len > 0
    // Hard to check exact content due to randomness, but it should not crash
}

fn test_lorem_vary() {
    // lorem_vary is private, effectively testing internal logic
    // base 10, min 5
    // delta = 10 * 0.2 = 2
    // range = [-2, 2]
    // result = 10 + [-2, 2] -> [8, 12]
    // We can't guarantee a specific value, but we can check bounds
    mut rng := LorumRNG{
        seed: 12345
    }
    for _ in 0 .. 100 {
        val := lorem_vary(mut rng, 10, 5)
        assert val >= 8
        assert val <= 12
    }
}

fn test_lorem_tokenize() {
    text := 'Hello\nWorld  Test'
    tokens := lorem_tokenize(text)
    assert tokens == ['Hello', 'World', 'Test']
}