add segments module unit tests

Author: chrissimpkins

tests/test_segments.py

@@ -0,0 +1,244 @@
+import argparse
+import os
+from os import O_TRUNC
+
+import pytest
+from fontTools.ttLib import TTFont
+from pathins.segments import segments_run
+import pathins.stringbuilder
+
+
+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_segments_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:
+        segments_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_segments_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:
+        segments_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_contours_run_fail_invalid_glyphname(capsys):
+    args = parser.parse_args([TESTFONT_PATH_1, "bogus"])
+    with pytest.raises(SystemExit) as e:
+        segments_run(args)
+
+    captured = capsys.readouterr()
+    assert e.type == SystemExit
+    assert e.value.code == 1
+    assert "Failed to open glyph" in captured.err
+
+
+def test_segments_run_single_glyph_nocontours_default(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    monkeypatch.setattr(pathins.stringbuilder, "IS_A_TTY", mock_isatty)
+
+    args = parser.parse_args([TESTFONT_PATH_1, ".notdef"])
+    segments_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "\033[1;96m'.notdef' segments\033[0m" in captured.out
+    assert "No contours" in captured.out
+
+
+def test_segments_run_single_glyph_nocontours_nocolor(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    monkeypatch.setattr(pathins.stringbuilder, "IS_A_TTY", mock_isatty)
+
+    args = parser.parse_args(["--nocolor", TESTFONT_PATH_1, ".notdef"])
+    segments_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "'.notdef' segments" in captured.out
+    assert "No contours" in captured.out
+
+
+def test_segments_run_single_glyph_noncomposite_default(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    monkeypatch.setattr(pathins.stringbuilder, "IS_A_TTY", mock_isatty)
+
+    args = parser.parse_args([TESTFONT_PATH_1, "A"])
+    segments_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "\033[1;96m'A' segments\033[0m" in captured.out
+
+    assert (
+        f"\033[32m(545,0)\033[0m (459,221): \033[1;96mLINE\033[0m 237.14 units{os.linesep}"
+        f"(459,221) (176,221): \033[1;96mLINE\033[0m 283.00 units"
+    ) in captured.out
+
+    assert (
+        f"(287,517) (206,301): \033[1;96mLINE\033[0m 230.69 units{os.linesep}"
+        f"\033[31m(206,301)\033[0m \033[32m(432,301)\033[0m: \033[1;96mLINE\033[0m 226.00 units"
+    ) in captured.out
+
+
+def test_segments_run_single_glyph_noncomposite_nocolor(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    monkeypatch.setattr(pathins.stringbuilder, "IS_A_TTY", mock_isatty)
+
+    args = parser.parse_args(["--nocolor", TESTFONT_PATH_1, "A"])
+    segments_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "'A' segments" in captured.out
+
+    assert (
+        f"(545,0) (459,221): LINE 237.14 units{os.linesep}"
+        f"(459,221) (176,221): LINE 283.00 units"
+    ) in captured.out
+
+    assert (
+        f"(287,517) (206,301): LINE 230.69 units{os.linesep}"
+        f"(206,301) (432,301): LINE 226.00 units"
+    ) in captured.out
+
+
+def test_segments_run_single_glyph_composite_default(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    monkeypatch.setattr(pathins.stringbuilder, "IS_A_TTY", mock_isatty)
+
+    args = parser.parse_args([TESTFONT_PATH_1, "uni2E2E"])
+    segments_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "\033[1;96m'uni2E2E' segments\033[0m" in captured.out
+
+    assert (
+        f"\033[32m(303,201)\033[0m (303,228): \033[1;96mLINE\033[0m 27.00 units{os.linesep}"
+        f"(303,228) (303,266) (296,294): \033[1;96mQCURVE\033[0m 66.53 units"
+    ) in captured.out
+
+    assert (
+        "(309,2) \033[31m(326,18)\033[0m \033[32m(326,54)\033[0m: \033[1;96mQCURVE\033[0m 56.25 units"
+        in captured.out
+    )
+
+
+def test_segments_run_single_glyph_composite_nocolor(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    monkeypatch.setattr(pathins.stringbuilder, "IS_A_TTY", mock_isatty)
+
+    args = parser.parse_args(["--nocolor", TESTFONT_PATH_1, "uni2E2E"])
+    segments_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "'uni2E2E' segments" in captured.out
+
+    assert (
+        f"(303,201) (303,228): LINE 27.00 units{os.linesep}"
+        f"(303,228) (303,266) (296,294): QCURVE 66.53 units"
+    ) in captured.out
+
+    assert "(309,2) (326,18) (326,54): QCURVE 56.25 units" in captured.out
+
+
+def test_segments_run_all_glyphs_default(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    monkeypatch.setattr(pathins.stringbuilder, "IS_A_TTY", mock_isatty)
+
+    args = parser.parse_args([TESTFONT_PATH_1])
+    segments_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "\033[1;96m'.notdef' segments\033[0m" in captured.out
+    assert "\033[1;96m'space' segments\033[0m" in captured.out
+    assert "\033[1;96m'comma' segments\033[0m" in captured.out
+    assert "\033[1;96m'question' segments\033[0m" in captured.out
+    assert "\033[1;96m'A' segments\033[0m" in captured.out
+    assert "\033[1;96m'uni2E2E' segments\033[0m" in captured.out
+
+    assert "\033[1mTotal\033[0m: 671.74 units" in captured.out
+    assert "\033[1mTotal\033[0m: 2245.15 units" in captured.out
+    assert "\033[1mTotal\033[0m: 3471.07 units" in captured.out
+    assert "\033[1mTotal\033[0m: 2246.05 units" in captured.out
+
+
+def test_segments_run_all_glyphs_nocolor(capsys, monkeypatch):
+    def mock_isatty():
+        return True
+
+    monkeypatch.setattr(pathins.stringbuilder, "IS_A_TTY", mock_isatty)
+
+    args = parser.parse_args(["--nocolor", TESTFONT_PATH_1])
+    segments_run(args)
+
+    captured = capsys.readouterr()
+    # must be in a tty to get ANSI color output
+    # this is mocked above
+    assert "\033[1;96m'.notdef' segments\033[0m" not in captured.out
+    assert "\033[1;96m'space' segments\033[0m" not in captured.out
+    assert "\033[1;96m'comma' segments\033[0m" not in captured.out
+    assert "\033[1;96m'question' segments\033[0m" not in captured.out
+    assert "\033[1;96m'A' segments\033[0m" not in captured.out
+    assert "\033[1;96m'uni2E2E' segments\033[0m" not in captured.out
+
+    assert "'.notdef' segments" in captured.out
+    assert "'space' segments" in captured.out
+    assert "'comma' segments" in captured.out
+    assert "'question' segments" in captured.out
+    assert "'A' segments" in captured.out
+    assert "'uni2E2E' segments" in captured.out
+
+    assert "Total: 671.74 units" in captured.out
+    assert "Total: 2245.15 units" in captured.out
+    assert "Total: 3471.07 units" in captured.out
+    assert "Total: 2246.05 units" in captured.out