GitHub Copilot
1f5e5c2c31
- Remove dominant-baseline: text-before-edge (has Safari compatibility issues) - Use separate y positions for rect (top of cell) and text (baseline) - rect_y = padding + row * line_height (top of cell) - text_y = rect_y + font_size (alphabetic baseline position) This ensures background rects and text are properly aligned across all browsers, fixing the half-line vertical offset on cursor blocks.
597 lines
24 KiB
Python
597 lines
24 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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_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_rgb_format_returns_default(self) -> None:
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"""RGB format falls back to default (not commonly used in terminals)."""
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assert _color_to_hex("rgb(255,0,0)", is_foreground=True) == DEFAULT_FG
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assert _color_to_hex("rgb(0,255,0)", 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 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_css_properties(self) -> None:
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"""SVG includes essential CSS properties for proper rendering."""
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svg = render_terminal_svg([], width=80, height=24)
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# Check for legibility optimization
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assert "text-rendering: optimizeLegibility" in svg
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# Check for monospace font
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assert "font-family:" in svg
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assert "monospace" in svg
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# Check for pre whitespace handling
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assert "white-space: pre" in svg
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def test_buffer_with_empty_rows(self) -> None:
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"""Buffer with rows containing only empty cells produces valid SVG."""
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# Row with only empty placeholder cells (no actual characters)
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buffer = [
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[self._char("") for _ in range(10)], # Empty row
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[self._char("A")], # Normal row
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[self._char("") for _ in range(10)], # Another empty row
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]
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svg = render_terminal_svg(buffer, width=10, height=3)
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assert svg.startswith("<svg")
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assert "A" in svg
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# Should only have 1 text element with content (for "A")
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assert svg.count("<tspan") == 1
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def test_buffer_with_truly_empty_row(self) -> None:
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"""Buffer with truly empty row (empty list) is handled."""
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buffer = [
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[], # Truly empty row (no cells at all)
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[self._char("B")], # Normal row
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]
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svg = render_terminal_svg(buffer, width=10, height=2)
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assert svg.startswith("<svg")
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assert ">B</tspan>" in svg
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def test_basic_text_output(self) -> None:
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"""Basic text is included in SVG (each char with explicit x position)."""
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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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# Each character is rendered individually with explicit x
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assert ">H</tspan>" in svg
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assert ">e</tspan>" in svg
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assert ">!</tspan>" 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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# Check for characters from each line
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assert ">L</tspan>" in svg
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assert ">1</tspan>" in svg
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assert ">2</tspan>" in svg
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assert ">3</tspan>" 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 "<" in svg # < escaped
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assert ">" in svg # > escaped
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assert "&" in svg # & escaped
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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_background_color_rect_dimensions(self) -> None:
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"""Background rect has correct position and dimensions."""
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buffer = [[self._char("A"), self._char("B", bg="green"), self._char("C")]]
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svg = render_terminal_svg(buffer, width=80, height=24, char_width=10.0)
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# Background rect should be positioned after 'A' (x=10 padding + 10 char width = 20)
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assert f'fill="{ANSI_COLORS["green"]}"' in svg
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# Check rect exists with green fill
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import re
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rect_match = re.search(r'<rect[^>]*fill="{}"[^>]*/>'.format(ANSI_COLORS["green"]), svg)
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assert rect_match is not None
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def test_background_color_hex_format(self) -> None:
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"""Background color works with hex format (with and without #)."""
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buffer = [[self._char("X", bg="#ff5733")]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert 'fill="#ff5733"' in svg
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def test_background_color_hex_without_hash(self) -> None:
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"""Background color works with pyte 256-color format (no # prefix)."""
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buffer = [[self._char("X", bg="00ff00")]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert 'fill="#00ff00"' in svg
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def test_background_color_multiple_spans(self) -> None:
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"""Multiple background colors in same row render correctly."""
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buffer = [[
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self._char("R", bg="red"),
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self._char("G", bg="green"),
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self._char("B", bg="blue"),
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]]
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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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assert f'fill="{ANSI_COLORS["blue"]}"' in svg
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# Should have 3 background rects (plus terminal bg rect)
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assert svg.count("<rect") >= 4
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def test_background_color_wide_char(self) -> None:
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"""Background color on wide character spans correct width."""
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buffer = [[
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self._char("中", bg="red"),
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self._char("", bg="red"), # Placeholder inherits bg
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]]
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svg = render_terminal_svg(buffer, width=80, height=24, char_width=10.0)
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# Background should span 2 columns (20px width)
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assert f'fill="{ANSI_COLORS["red"]}"' in svg
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# Verify rect width is for 2 columns
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import re
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rect_match = re.search(r'<rect[^>]*width="(\d+\.?\d*)"[^>]*fill="{}"/>'
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.format(ANSI_COLORS["red"]), svg)
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assert rect_match is not None
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width = float(rect_match.group(1))
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assert width == 20.0 # 2 columns * 10.0 char_width
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def test_background_same_as_terminal_bg_no_rect(self) -> None:
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"""Background same as terminal background doesn't create extra rect."""
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# Use default terminal background (#000000)
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buffer = [[self._char("X", bg="#000000")]]
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svg = render_terminal_svg(buffer, width=80, height=24, background="#000000")
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# Should only have terminal background rect, not character background
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# Count rects - should be just 1 (terminal bg)
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assert svg.count("<rect") == 1
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def test_background_and_foreground_colors(self) -> None:
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"""Both background and foreground colors render correctly."""
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buffer = [[self._char("X", fg="yellow", bg="blue")]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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# Background rect with blue
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assert f'fill="{ANSI_COLORS["blue"]}"' in svg
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# Text tspan with yellow
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assert f'fill="{ANSI_COLORS["yellow"]}"' 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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# Each char rendered separately
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assert ">你</tspan>" in svg
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assert ">好</tspan>" 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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# Each emoji rendered separately
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assert ">🎉</tspan>" in svg
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assert ">🚀</tspan>" 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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# Each char rendered with explicit x position
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assert ">A</tspan>" in svg
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assert ">中</tspan>" in svg
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assert ">B</tspan>" in svg
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# B should be at column 3 (A=0, 中=1-2, B=3)
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assert 'x="34.0"' in svg # 10 + 3*8 = 34
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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):
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char = chr(32 + ((row * 80 + col) % 95)) # Printable ASCII
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row_data.append(self._char(char))
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buffer.append(row_data)
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert svg.startswith("<svg")
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assert svg.endswith("</svg>")
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# Should have 24 text elements
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assert svg.count("<text y=") == 24
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def test_reverse_video_rendering(self) -> None:
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"""Reverse video swaps colors correctly."""
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buffer = [[self._char("X", fg="white", bg="black", reverse=True)]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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# Colors should be swapped, so fg should be black's color
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assert ANSI_COLORS["black"] in svg
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def test_hex_color_passthrough(self) -> None:
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"""Hex colors in buffer pass through to SVG."""
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buffer = [[self._char("X", fg="#ff5733")]]
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svg = render_terminal_svg(buffer, width=80, height=24)
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assert 'fill="#ff5733"' in svg
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def test_whitespace_handling(self) -> None:
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"""Whitespace is preserved."""
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buffer = self._make_buffer([" indented text "])
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svg = render_terminal_svg(buffer, width=80, height=24)
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# white-space: pre should be in styles
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assert "white-space: pre" in svg
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class TestSvgStructure:
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"""Tests for SVG document structure."""
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def test_valid_xml_structure(self) -> None:
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"""SVG has valid XML structure."""
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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)
|
|
# Each char rendered with explicit x
|
|
assert ">A</tspan>" in svg
|
|
assert ">中</tspan>" in svg
|
|
assert ">B</tspan>" in svg
|
|
assert ">🎉</tspan>" in svg
|
|
assert ">C</tspan>" in svg
|
|
|
|
def test_special_unicode_blocks(self) -> None:
|
|
"""Unicode box drawing characters render (separately for precise positioning)."""
|
|
buffer = [[
|
|
self._char("┌"),
|
|
self._char("─"),
|
|
self._char("┐"),
|
|
]]
|
|
svg = render_terminal_svg(buffer, width=3, height=1)
|
|
# Box drawing chars are rendered separately for precise x positioning
|
|
assert "┌" in svg
|
|
assert "─" in svg
|
|
assert "┐" in svg
|
|
|
|
def test_horizontal_lines_render_without_textlength(self) -> None:
|
|
"""Horizontal lines render without textLength (removed due to positioning issues)."""
|
|
buffer = [[
|
|
self._char("╭"),
|
|
self._char("─"),
|
|
self._char("─"),
|
|
self._char("─"),
|
|
self._char("╮"),
|
|
]]
|
|
svg = render_terminal_svg(buffer, width=5, height=1)
|
|
# Horizontal lines should NOT have textLength (causes visual offset issues)
|
|
assert 'textLength=' not in svg
|
|
assert 'lengthAdjust=' not in svg
|
|
# But the characters should still be present
|
|
assert "─" in svg or "───" 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
|