Test/add pytest

.github/workflows/python-tests.yml

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+name: python-tests
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.10'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+    - name: Run tests
+      run: pytest -q

tests/test_integration_midi.py

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+import os
+from aps_logcomp import main
+
+def test_integration_generate_midi(tmp_path):
+    # Minimal music: one instrument, one play
+    content = "Music X 100 { Instrument piano { play 60 1 } }"
+    tokenizer = main.Tokenizer(content)
+    parser = main.Parser(tokenizer)
+    music_node = parser.parse_program()
+
+    # Build context by evaluating nodes (this populates context["instrumentos"])
+    context = {}
+    music_node.evaluate(context)
+
+    # instrument map: piano -> GM program 0
+    instrument_map = {"piano": 0}
+
+    out_base = tmp_path / "out_test"
+    # criar_midi_com_duracoes writes {nome}.mid, so pass a path-like name
+    out_name = str(out_base)
+
+    # call the function under test
+    main.criar_midi_com_duracoes(context, music_node.bpm, out_name, music_node.instrumentos, instrument_map)
+
+    out_file = out_base.with_suffix(".mid")
+    assert out_file.exists(), "MIDI file was not created"
+    assert out_file.stat().st_size > 0, "MIDI file size is zero"

tests/test_tokenizer_parser.py

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+import pytest
+from aps_logcomp import main
+
+def test_tokenizer_basic_sequence():
+    content = "Music Song 120 { Instrument piano { play 60 1 } }"
+    tokenizer = main.Tokenizer(content)
+    tokens = tokenizer.tokenize()
+    types = [t.type for t in tokens]
+    # Expected prefix of token types
+    expected = ["MUSIC", "ID", "NUMBER", "LBRACE", "INSTRUMENT", "ID",
+                "LBRACE", "PLAY", "NUMBER", "NUMBER", "RBRACE", "RBRACE"]
+    assert types[:len(expected)] == expected
+
+def test_parser_produces_music_node():
+    content = "Music Foobar 100 { Instrument piano { play 63 1 } }"
+    tokenizer = main.Tokenizer(content)
+    parser = main.Parser(tokenizer)
+    node = parser.parse_program()
+    assert isinstance(node, main.MusicNode)
+    assert node.nome == "Foobar"
+    assert node.bpm == 100
+    # at least one instrument parsed
+    assert len(node.instrumentos) >= 1