GitHub Copilot
4f4b811967
Track column count separately from character count to properly handle wide characters (CJK, emoji) that occupy 2 terminal columns but have a single character + empty placeholder in pyte buffer.
636 lines
23 KiB
Python
636 lines
23 KiB
Python
"""Extensive tests for the custom SVG exporter."""
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from __future__ import annotations
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from textual_webterm.svg_exporter import (
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ANSI_COLORS,
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DEFAULT_BG,
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DEFAULT_FG,
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CharData,
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_build_row_spans,
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_color_to_hex,
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_escape_xml,
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render_terminal_svg,
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)
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class TestColorToHex:
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"""Tests for _color_to_hex function."""
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def test_default_foreground(self) -> None:
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"""Default color returns DEFAULT_FG for foreground."""
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assert _color_to_hex("default", is_foreground=True) == DEFAULT_FG
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def test_default_background(self) -> None:
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"""Default color returns DEFAULT_BG for background."""
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assert _color_to_hex("default", is_foreground=False) == DEFAULT_BG
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def test_hex_color_passthrough(self) -> None:
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"""Hex colors pass through unchanged."""
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assert _color_to_hex("#ff0000") == "#ff0000"
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assert _color_to_hex("#123456") == "#123456"
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assert _color_to_hex("#AABBCC") == "#AABBCC"
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def test_hex_color_without_hash(self) -> None:
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"""Hex colors without # prefix (pyte's 256-color/truecolor) get # added."""
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assert _color_to_hex("ff0000") == "#ff0000"
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assert _color_to_hex("123456") == "#123456"
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assert _color_to_hex("AABBCC") == "#AABBCC"
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assert _color_to_hex("ff8700") == "#ff8700" # Common 256-color orange
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def test_named_colors(self) -> None:
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"""Named ANSI colors map correctly."""
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assert _color_to_hex("red") == ANSI_COLORS["red"]
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assert _color_to_hex("green") == ANSI_COLORS["green"]
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assert _color_to_hex("blue") == ANSI_COLORS["blue"]
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assert _color_to_hex("white") == ANSI_COLORS["white"]
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assert _color_to_hex("black") == ANSI_COLORS["black"]
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def test_bright_colors(self) -> None:
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"""Bright color variants map correctly."""
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assert _color_to_hex("brightred") == ANSI_COLORS["brightred"]
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assert _color_to_hex("brightgreen") == ANSI_COLORS["brightgreen"]
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assert _color_to_hex("brightblue") == ANSI_COLORS["brightblue"]
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def test_case_insensitive(self) -> None:
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"""Color names are case-insensitive."""
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assert _color_to_hex("RED") == ANSI_COLORS["red"]
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assert _color_to_hex("Green") == ANSI_COLORS["green"]
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assert _color_to_hex("BRIGHTBLUE") == ANSI_COLORS["brightblue"]
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def test_unknown_color_returns_default(self) -> None:
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"""Unknown color names return default."""
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assert _color_to_hex("unknowncolor", is_foreground=True) == DEFAULT_FG
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assert _color_to_hex("unknowncolor", is_foreground=False) == DEFAULT_BG
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def test_gray_aliases(self) -> None:
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"""Gray/grey aliases work."""
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assert _color_to_hex("gray") == ANSI_COLORS["gray"]
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assert _color_to_hex("grey") == ANSI_COLORS["grey"]
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assert _color_to_hex("lightgray") == ANSI_COLORS["lightgray"]
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assert _color_to_hex("lightgrey") == ANSI_COLORS["lightgrey"]
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class TestEscapeXml:
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"""Tests for XML escaping."""
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def test_no_special_chars(self) -> None:
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"""Plain text passes through unchanged."""
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assert _escape_xml("hello world") == "hello world"
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def test_less_than(self) -> None:
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"""Less than is escaped."""
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assert _escape_xml("<") == "<"
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assert _escape_xml("a < b") == "a < b"
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def test_greater_than(self) -> None:
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"""Greater than is escaped."""
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assert _escape_xml(">") == ">"
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assert _escape_xml("a > b") == "a > b"
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def test_ampersand(self) -> None:
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"""Ampersand is escaped."""
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assert _escape_xml("&") == "&"
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assert _escape_xml("a & b") == "a & b"
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def test_quotes(self) -> None:
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"""Quotes are escaped."""
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assert _escape_xml('"') == """
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assert _escape_xml("'") == "'"
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def test_mixed_special_chars(self) -> None:
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"""Multiple special chars are all escaped."""
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assert _escape_xml('<script>"alert"</script>') == (
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"<script>"alert"</script>"
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)
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def test_unicode_preserved(self) -> None:
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"""Unicode characters are preserved."""
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assert _escape_xml("你好世界") == "你好世界"
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assert _escape_xml("🎉🚀") == "🎉🚀"
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class TestBuildRowSpans:
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"""Tests for _build_row_spans function."""
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def _char(
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self,
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data: str,
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fg: str = "default",
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bg: str = "default",
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bold: bool = False,
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italics: bool = False,
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underscore: bool = False,
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reverse: bool = False,
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) -> CharData:
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"""Helper to create CharData."""
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return {
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"data": data,
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"fg": fg,
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"bg": bg,
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"bold": bold,
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"italics": italics,
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"underscore": underscore,
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"reverse": reverse,
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}
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def test_empty_row(self) -> None:
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"""Empty row returns no spans."""
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assert _build_row_spans([], DEFAULT_FG, DEFAULT_BG) == []
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def test_single_char(self) -> None:
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"""Single character produces one span."""
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row = [self._char("A")]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 1
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assert spans[0]["text"] == "A"
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def test_consecutive_same_style_merged(self) -> None:
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"""Consecutive chars with same style are merged."""
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row = [self._char("H"), self._char("e"), self._char("l"), self._char("l"), self._char("o")]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 1
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assert spans[0]["text"] == "Hello"
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def test_different_colors_split(self) -> None:
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"""Different colors create separate spans."""
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row = [
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self._char("R", fg="red"),
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self._char("G", fg="green"),
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self._char("B", fg="blue"),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 3
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assert spans[0]["text"] == "R"
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assert spans[0]["fg"] == ANSI_COLORS["red"]
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assert spans[1]["text"] == "G"
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assert spans[1]["fg"] == ANSI_COLORS["green"]
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assert spans[2]["text"] == "B"
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assert spans[2]["fg"] == ANSI_COLORS["blue"]
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def test_same_color_merged(self) -> None:
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"""Same color chars are merged."""
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row = [
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self._char("A", fg="red"),
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self._char("B", fg="red"),
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self._char("C", fg="red"),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 1
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assert spans[0]["text"] == "ABC"
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assert spans[0]["fg"] == ANSI_COLORS["red"]
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def test_bold_creates_new_span(self) -> None:
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"""Bold attribute creates new span."""
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row = [
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self._char("N"),
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self._char("B", bold=True),
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self._char("N"),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 3
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assert spans[0]["bold"] is False
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assert spans[1]["bold"] is True
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assert spans[1]["text"] == "B"
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assert spans[2]["bold"] is False
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def test_italic_creates_new_span(self) -> None:
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"""Italic attribute creates new span."""
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row = [
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self._char("N"),
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self._char("I", italics=True),
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self._char("N"),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 3
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assert spans[1]["italic"] is True
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def test_underline_creates_new_span(self) -> None:
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"""Underline attribute creates new span."""
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row = [
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self._char("N"),
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self._char("U", underscore=True),
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self._char("N"),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 3
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assert spans[1]["underline"] is True
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def test_reverse_swaps_colors(self) -> None:
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"""Reverse video swaps foreground and background."""
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row = [self._char("R", fg="red", bg="blue", reverse=True)]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 1
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# Colors should be swapped
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assert spans[0]["fg"] == ANSI_COLORS["blue"]
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assert spans[0]["bg"] == ANSI_COLORS["red"]
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def test_background_color_tracked(self) -> None:
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"""Background color is tracked in has_bg flag."""
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row = [
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self._char("N"),
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self._char("B", bg="red"),
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self._char("N"),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert spans[0]["has_bg"] is False
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assert spans[1]["has_bg"] is True
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assert spans[2]["has_bg"] is False
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def test_wide_char_placeholder_skipped(self) -> None:
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"""Empty placeholder cells (after wide chars) are skipped but counted in columns."""
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row = [
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self._char("A"),
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self._char("中"), # Wide char
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self._char(""), # Placeholder - should be skipped but counted
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self._char("B"),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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# Should merge into single span since all default style
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assert len(spans) == 1
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assert spans[0]["text"] == "A中B"
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assert spans[0]["columns"] == 4 # 1 + 1 + 1(placeholder) + 1
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def test_multiple_wide_chars(self) -> None:
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"""Multiple wide characters handled correctly."""
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row = [
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self._char("日"),
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self._char(""),
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self._char("本"),
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self._char(""),
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self._char("語"),
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self._char(""),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 1
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assert spans[0]["text"] == "日本語"
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assert spans[0]["columns"] == 6 # Each wide char + placeholder = 2 columns
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def test_emoji_with_placeholder(self) -> None:
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"""Emoji characters with placeholders handled."""
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row = [
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self._char("🎉"),
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self._char(""),
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self._char(" "),
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self._char("🚀"),
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self._char(""),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 1
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assert spans[0]["text"] == "🎉 🚀"
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assert spans[0]["columns"] == 5 # 2 + 1 + 2
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def test_mixed_styles_complex(self) -> None:
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"""Complex mix of styles produces correct spans."""
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row = [
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self._char("H", fg="red", bold=True),
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self._char("e", fg="red", bold=True),
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self._char("l", fg="green"),
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self._char("l", fg="green"),
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self._char("o", fg="blue", italics=True),
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]
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spans = _build_row_spans(row, DEFAULT_FG, DEFAULT_BG)
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assert len(spans) == 3
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assert spans[0]["text"] == "He"
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assert spans[0]["bold"] is True
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assert spans[1]["text"] == "ll"
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assert spans[1]["bold"] is False
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assert spans[2]["text"] == "o"
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assert spans[2]["italic"] is True
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class TestRenderTerminalSvg:
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"""Tests for render_terminal_svg function."""
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def _char(
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self,
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data: str,
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fg: str = "default",
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bg: str = "default",
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bold: bool = False,
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italics: bool = False,
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underscore: bool = False,
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reverse: bool = False,
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) -> CharData:
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"""Helper to create CharData."""
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return {
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"data": data,
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"fg": fg,
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"bg": bg,
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"bold": bold,
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"italics": italics,
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"underscore": underscore,
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"reverse": reverse,
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}
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def _make_buffer(self, rows: list[str]) -> list[list[CharData]]:
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"""Create simple buffer from strings."""
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return [[self._char(c) for c in row] for row in rows]
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def test_empty_buffer(self) -> None:
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"""Empty buffer produces valid SVG."""
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svg = render_terminal_svg([], width=80, height=24)
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assert svg.startswith("<svg")
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assert svg.endswith("</svg>")
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assert 'xmlns="http://www.w3.org/2000/svg"' in svg
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def test_basic_text_output(self) -> None:
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"""Basic text is included in SVG."""
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buffer = self._make_buffer(["Hello, World!"])
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert "Hello, World!" in svg
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def test_multiline_output(self) -> None:
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"""Multiple lines render correctly."""
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buffer = self._make_buffer(["Line 1", "Line 2", "Line 3"])
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert "Line 1" in svg
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assert "Line 2" in svg
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assert "Line 3" in svg
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# Should have 3 text elements
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assert svg.count("<text y=") == 3
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def test_special_chars_escaped(self) -> None:
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"""Special XML characters are properly escaped."""
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buffer = self._make_buffer(["<script>&test</script>"])
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert "<script>" in svg
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assert "&test" in svg
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assert "<script>" not in svg # Should not appear unescaped
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def test_colored_text(self) -> None:
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"""Colored text gets fill attribute."""
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buffer = [[self._char("R", fg="red"), self._char("G", fg="green")]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert f'fill="{ANSI_COLORS["red"]}"' in svg
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assert f'fill="{ANSI_COLORS["green"]}"' in svg
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def test_bold_text(self) -> None:
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"""Bold text gets bold class."""
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buffer = [[self._char("B", bold=True)]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert 'class="bold"' in svg
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def test_italic_text(self) -> None:
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"""Italic text gets italic class."""
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buffer = [[self._char("I", italics=True)]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert 'class="italic"' in svg
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def test_underline_text(self) -> None:
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"""Underlined text gets underline class."""
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buffer = [[self._char("U", underscore=True)]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert 'class="underline"' in svg
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def test_combined_styles(self) -> None:
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"""Multiple styles can be combined."""
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buffer = [[self._char("X", bold=True, italics=True, underscore=True)]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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# Should have all three classes
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assert "bold" in svg
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assert "italic" in svg
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assert "underline" in svg
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def test_background_color(self) -> None:
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"""Background color creates rect element."""
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buffer = [[self._char("X", bg="red")]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert f'fill="{ANSI_COLORS["red"]}"' in svg
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# Should have a rect for background
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assert "<rect" in svg
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def test_unicode_text(self) -> None:
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"""Unicode text is preserved."""
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buffer = self._make_buffer(["你好世界"])
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert "你好世界" in svg
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def test_emoji_text(self) -> None:
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"""Emoji are preserved."""
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buffer = self._make_buffer(["🎉🚀✨"])
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert "🎉🚀✨" in svg
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def test_wide_char_with_placeholder(self) -> None:
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"""Wide chars with placeholders render correctly."""
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buffer = [
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[
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self._char("A"),
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self._char("中"),
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self._char(""), # Placeholder
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self._char("B"),
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]
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]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert "A中B" in svg
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def test_viewbox_dimensions(self) -> None:
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"""ViewBox matches calculated dimensions."""
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svg = render_terminal_svg([], width=80, height=24)
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assert 'viewBox="0 0' in svg
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def test_title_included(self) -> None:
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"""Title is included in SVG."""
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svg = render_terminal_svg([], width=80, height=24, title="My Terminal")
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assert "<title>My Terminal</title>" in svg
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def test_title_escaped(self) -> None:
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"""Title with special chars is escaped."""
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svg = render_terminal_svg([], width=80, height=24, title="<Test>")
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assert "<title><Test></title>" in svg
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def test_custom_font_size(self) -> None:
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"""Custom font size is applied."""
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svg = render_terminal_svg([], width=80, height=24, font_size=16)
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assert "font-size: 16px" in svg
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def test_custom_background(self) -> None:
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"""Custom background color is applied."""
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svg = render_terminal_svg([], width=80, height=24, background="#1a1a1a")
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assert 'fill: #1a1a1a' in svg
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def test_style_definitions_present(self) -> None:
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"""CSS style definitions are included."""
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svg = render_terminal_svg([], width=80, height=24)
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assert "<style>" in svg
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assert ".terminal-bg" in svg
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assert ".terminal-text" in svg
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assert ".bold" in svg
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assert ".italic" in svg
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assert ".underline" in svg
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def test_full_screen_render(self) -> None:
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"""Full terminal screen renders without error."""
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# Create a 80x24 screen with various content
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buffer: list[list[CharData]] = []
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for row in range(24):
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row_data: list[CharData] = []
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for col in range(80):
|
|
char = chr(32 + ((row * 80 + col) % 95)) # Printable ASCII
|
|
row_data.append(self._char(char))
|
|
buffer.append(row_data)
|
|
|
|
svg = render_terminal_svg(buffer, width=80, height=24)
|
|
assert svg.startswith("<svg")
|
|
assert svg.endswith("</svg>")
|
|
# Should have 24 text elements
|
|
assert svg.count("<text y=") == 24
|
|
|
|
def test_reverse_video_rendering(self) -> None:
|
|
"""Reverse video swaps colors correctly."""
|
|
buffer = [[self._char("X", fg="white", bg="black", reverse=True)]]
|
|
svg = render_terminal_svg(buffer, width=80, height=24)
|
|
# Colors should be swapped, so fg should be black's color
|
|
assert ANSI_COLORS["black"] in svg
|
|
|
|
def test_hex_color_passthrough(self) -> None:
|
|
"""Hex colors in buffer pass through to SVG."""
|
|
buffer = [[self._char("X", fg="#ff5733")]]
|
|
svg = render_terminal_svg(buffer, width=80, height=24)
|
|
assert 'fill="#ff5733"' in svg
|
|
|
|
def test_whitespace_handling(self) -> None:
|
|
"""Whitespace is preserved."""
|
|
buffer = self._make_buffer([" indented text "])
|
|
svg = render_terminal_svg(buffer, width=80, height=24)
|
|
# white-space: pre should be in styles
|
|
assert "white-space: pre" in svg
|
|
|
|
|
|
class TestSvgStructure:
|
|
"""Tests for SVG document structure."""
|
|
|
|
def test_valid_xml_structure(self) -> None:
|
|
"""SVG has valid XML structure."""
|
|
svg = render_terminal_svg([], width=80, height=24)
|
|
# Basic structure checks
|
|
assert svg.count("<svg") == 1
|
|
assert svg.count("</svg>") == 1
|
|
assert svg.count("<defs>") == 1
|
|
assert svg.count("</defs>") == 1
|
|
assert svg.count("<style>") == 1
|
|
assert svg.count("</style>") == 1
|
|
|
|
def test_all_tags_closed(self) -> None:
|
|
"""All opened tags are properly closed."""
|
|
buffer = [[{"data": "X", "fg": "red", "bg": "blue", "bold": True,
|
|
"italics": False, "underscore": False, "reverse": False}]]
|
|
svg = render_terminal_svg(buffer, width=80, height=24)
|
|
|
|
# Count opening and closing tags
|
|
assert svg.count("<g") == svg.count("</g>")
|
|
assert svg.count("<text") == svg.count("</text>")
|
|
|
|
def test_namespace_declared(self) -> None:
|
|
"""SVG namespace is properly declared."""
|
|
svg = render_terminal_svg([], width=80, height=24)
|
|
assert 'xmlns="http://www.w3.org/2000/svg"' in svg
|
|
|
|
|
|
class TestEdgeCases:
|
|
"""Tests for edge cases and boundary conditions."""
|
|
|
|
def _char(
|
|
self,
|
|
data: str,
|
|
fg: str = "default",
|
|
bg: str = "default",
|
|
bold: bool = False,
|
|
italics: bool = False,
|
|
underscore: bool = False,
|
|
reverse: bool = False,
|
|
) -> CharData:
|
|
"""Helper to create CharData."""
|
|
return {
|
|
"data": data,
|
|
"fg": fg,
|
|
"bg": bg,
|
|
"bold": bold,
|
|
"italics": italics,
|
|
"underscore": underscore,
|
|
"reverse": reverse,
|
|
}
|
|
|
|
def test_single_cell(self) -> None:
|
|
"""Single cell terminal renders."""
|
|
buffer = [[self._char("X")]]
|
|
svg = render_terminal_svg(buffer, width=1, height=1)
|
|
assert "X" in svg
|
|
|
|
def test_very_wide_terminal(self) -> None:
|
|
"""Very wide terminal (200 cols) renders."""
|
|
row = [self._char("X") for _ in range(200)]
|
|
svg = render_terminal_svg([row], width=200, height=1)
|
|
assert svg.startswith("<svg")
|
|
|
|
def test_very_tall_terminal(self) -> None:
|
|
"""Very tall terminal (100 rows) renders."""
|
|
buffer = [[self._char("X")] for _ in range(100)]
|
|
svg = render_terminal_svg(buffer, width=1, height=100)
|
|
assert svg.count("<text y=") == 100
|
|
|
|
def test_all_spaces(self) -> None:
|
|
"""Row of all spaces renders."""
|
|
buffer = [[self._char(" ") for _ in range(80)]]
|
|
svg = render_terminal_svg(buffer, width=80, height=1)
|
|
assert svg.startswith("<svg")
|
|
|
|
def test_null_chars_as_space(self) -> None:
|
|
"""Null characters (empty string) are skipped."""
|
|
buffer = [[self._char(""), self._char("A"), self._char("")]]
|
|
svg = render_terminal_svg(buffer, width=3, height=1)
|
|
assert "A" in svg
|
|
|
|
def test_mixed_width_characters(self) -> None:
|
|
"""Mix of narrow and wide characters."""
|
|
buffer = [
|
|
[
|
|
self._char("A"),
|
|
self._char("中"),
|
|
self._char(""),
|
|
self._char("B"),
|
|
self._char("🎉"),
|
|
self._char(""),
|
|
self._char("C"),
|
|
]
|
|
]
|
|
svg = render_terminal_svg(buffer, width=7, height=1)
|
|
assert "A中B🎉C" in svg
|
|
|
|
def test_special_unicode_blocks(self) -> None:
|
|
"""Unicode box drawing characters render."""
|
|
buffer = [[
|
|
self._char("┌"),
|
|
self._char("─"),
|
|
self._char("┐"),
|
|
]]
|
|
svg = render_terminal_svg(buffer, width=3, height=1)
|
|
assert "┌─┐" in svg
|
|
|
|
def test_ansi_bright_colors(self) -> None:
|
|
"""All bright ANSI colors render."""
|
|
colors = ["brightred", "brightgreen", "brightyellow",
|
|
"brightblue", "brightmagenta", "brightcyan"]
|
|
buffer = [[self._char("X", fg=c) for c in colors]]
|
|
svg = render_terminal_svg(buffer, width=len(colors), height=1)
|
|
for color in colors:
|
|
assert ANSI_COLORS[color] in svg
|
|
|
|
def test_rapid_color_changes(self) -> None:
|
|
"""Rapid color changes (each char different) render."""
|
|
colors = ["red", "green", "blue", "yellow", "magenta", "cyan"]
|
|
buffer = [[self._char(str(i), fg=colors[i % len(colors)]) for i in range(20)]]
|
|
svg = render_terminal_svg(buffer, width=20, height=1)
|
|
# Should have multiple tspan elements
|
|
assert svg.count("<tspan") >= 1
|
|
|
|
def test_all_attributes_at_once(self) -> None:
|
|
"""Character with all attributes renders."""
|
|
buffer = [[self._char("X", fg="red", bg="blue", bold=True,
|
|
italics=True, underscore=True, reverse=True)]]
|
|
svg = render_terminal_svg(buffer, width=1, height=1)
|
|
assert "bold" in svg
|
|
assert "italic" in svg
|
|
assert "underline" in svg
|