add single glyph direction unit tests

Author: chrissimpkins

tests/test_direction.py

@@ -0,0 +1,156 @@
+import argparse
+import os
+import sys
+
+import pytest
+
+from pathins.direction import direction_run
+
+TESTFONT_PATH_1 = os.path.join(
+    "tests", "testfiles", "fonts", "NotoSans-Regular.subset1.ttf"
+)
+
+# instantiate a parser for unit tests in this module
+parser = argparse.ArgumentParser()
+parser.add_argument("--nocolor", action="store_true", help="no ANSI color")
+parser.add_argument("fontpath", type=str, help="font file path")
+parser.add_argument(
+    "glyphname", type=str, help="glyph name (optional, default=all)", nargs="?"
+)
+
+
+def test_direction_run_error_invalid_path(capsys):
+    test_path = os.path.join("bogus", "path.txt")
+    args = parser.parse_args([test_path])
+
+    with pytest.raises(SystemExit) as e:
+        direction_run(args)
+
+    captured = capsys.readouterr()
+    assert e.type == SystemExit
+    assert e.value.code == 1
+    assert "does not appear to be a file" in captured.err
+
+
+def test_direction_run_error_non_font_path(capsys):
+    test_path = os.path.join("tests", "testfiles", "text", "test.txt")
+    args = parser.parse_args([test_path])
+
+    with pytest.raises(SystemExit) as e:
+        direction_run(args)
+
+    captured = capsys.readouterr()
+    assert e.type == SystemExit
+    assert e.value.code == 1
+    assert "does not appear to be a TTF format font" in captured.err
+
+
+def test_direction_run_fail_invalid_glyphname(capsys):
+    args = parser.parse_args([TESTFONT_PATH_1, "bogus"])
+    with pytest.raises(SystemExit) as e:
+        direction_run(args)
+
+    captured = capsys.readouterr()
+    assert e.type == SystemExit
+    assert e.value.code == 1
+    assert "Failed to open glyph" in captured.err
+
+
+def test_path_run_single_glyph_non_composite_no_contours_default(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    # apply the monkeypatch for sys.stdout.isatty()
+    monkeypatch.setattr(sys.stdout, "isatty", mock_isatty)
+
+    args = parser.parse_args([TESTFONT_PATH_1, ".notdef"])
+    direction_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "[ \x1b[1;36m.notdef\x1b[0m ]: no contours" in captured.out
+
+
+def test_path_run_single_glyph_non_composite_no_contours_nocolor(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    # apply the monkeypatch for sys.stdout.isatty()
+    monkeypatch.setattr(sys.stdout, "isatty", mock_isatty)
+
+    args = parser.parse_args(["--nocolor", TESTFONT_PATH_1, ".notdef"])
+    direction_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "[ .notdef ]: no contours" in captured.out
+
+
+def test_path_run_single_glyph_non_composite_clockwise_default(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    # apply the monkeypatch for sys.stdout.isatty()
+    monkeypatch.setattr(sys.stdout, "isatty", mock_isatty)
+
+    args = parser.parse_args([TESTFONT_PATH_1, "A"])
+    direction_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "[ \x1b[1;36mA\x1b[0m ]: clockwise" in captured.out
+
+
+def test_path_run_single_glyph_non_composite_clockwise_nocolor(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    # apply the monkeypatch for sys.stdout.isatty()
+    monkeypatch.setattr(sys.stdout, "isatty", mock_isatty)
+
+    args = parser.parse_args(["--nocolor", TESTFONT_PATH_1, "A"])
+    direction_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "[ A ]: clockwise" in captured.out
+
+
+def test_path_run_single_glyph_composite_counter_clockwise_default(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    # apply the monkeypatch for sys.stdout.isatty()
+    monkeypatch.setattr(sys.stdout, "isatty", mock_isatty)
+
+    args = parser.parse_args([TESTFONT_PATH_1, "uni2E2E"])
+    direction_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "[ \x1b[1;36muni2E2E\x1b[0m ]: counter-clockwise" in captured.out
+    assert "with component 'question' transform: [[-1.0, 0], [0, 1.0]]" in captured.out
+
+
+def test_path_run_single_glyph_composite_counter_clockwise_nocolor(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    # apply the monkeypatch for sys.stdout.isatty()
+    monkeypatch.setattr(sys.stdout, "isatty", mock_isatty)
+
+    args = parser.parse_args(["--nocolor", TESTFONT_PATH_1, "uni2E2E"])
+    direction_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert captured.out == (
+        "[ uni2E2E ]: counter-clockwise\n"
+        "          with component 'question' transform: [[-1.0, 0], [0, 1.0]]\n"
+    )