as visible text.""" def test_fenced_code_inside_blockquote_renders_pre(self, driver_path): src = ( "> Here is some code:\n" ">\n" "> ```python\n" "> x = 1\n" "> y = 2\n" "> ```\n" ">\n" "> That was the code." ) out = _render(driver_path, src) assert "

" in out and "

" in out, ( f"Fenced code inside blockquote must render as

: {out!r}"
        )
        # The > prefixes must be stripped from the code content, not preserved
        # inside the .
        assert "> x = 1" not in out, (
            f"Code content inside  must not contain > prefixes: {out!r}"
        )
        # Raw  or pre-header tags must NOT appear as visible text
        assert "<pre>" not in out
        assert "<div class="pre-header" not in out
        # Single  wrapping everything (not split by the )
        assert out.count("") == 1, (
            f"Expected ONE , got {out.count('')}: {out!r}"
        )

    def test_fenced_code_with_lang_class(self, driver_path):
        src = "> ```python\n> x = 1\n> ```"
        out = _render(driver_path, src)
        assert 'class="language-python"' in out
        assert "x = 1" in out


class TestFencedCodeFenceLength:
    """CommonMark §4.5 requires the closer to be at least as long as the opener."""

    def test_five_backtick_outer_fence_preserves_inner_triple_fence(self, driver_path):
        src = (
            "- optionally also support fenced code blocks\n\n"
            "`````md\n"
            "`md\n"
            "```novelcrafter\n"
            "{#if novel.hasSeries}\n"
            "...\n"
            "{#endif}\n"
            "```\n"
            "`````\n\n"
            "That is much more correct than pretending"
        )
        out = _render(driver_path, src)
        assert out.count("") == 1
        assert out.count("") == 1
        assert 'md' in out
        assert "```novelcrafter" in out
        assert "{#if novel.hasSeries}" in out
        assert "That is much more correct than pretending" in out
        assert "`````" not in out
        assert "
`````" not in out

    def test_four_backtick_outer_fence_preserves_inner_triple_fence(self, driver_path):
        out = _render(driver_path, "````md\n```inner\nfoo\n```\n````\n")
        assert out.count("
") == 1
        assert out.count("") == 1
        assert 'md' in out
        assert "```inner" in out
        assert "foo" in out
        assert "````" not in out

    def test_three_backtick_fence_still_renders_language_class(self, driver_path):
        out = _render(driver_path, "```js\nconsole.log('ok')\n```")
        assert out.count("
") == 1
        assert 'js' in out
        assert 'class="language-js"' in out
        assert "console.log('ok')" in out


class TestBugBlankContinuationInBlockquote:
    """Bug 2: blank > lines between paragraphs fragmented the blockquote into
    separate elements with literal > characters between them."""

    def test_three_paragraphs_one_blockquote(self, driver_path):
        src = (
            "> First paragraph of the quote.\n"
            ">\n"
            "> Second paragraph of the quote.\n"
            ">\n"
            "> Third paragraph of the quote."
        )
        out = _render(driver_path, src)
        # All three paragraphs in ONE 
        assert out.count("") == 1, (
            f"Expected ONE , got {out.count('')}: {out!r}"
        )
        assert "First paragraph" in out
        assert "Second paragraph" in out
        assert "Third paragraph" in out
        # No literal > between paragraphs (would indicate fragmented blockquote)
        text_only = re.sub(r"<[^>]+>", "", out)
        assert ">" not in text_only, (
            f"Literal > in rendered text indicates fragmented blockquote: {text_only!r}"
        )


class TestBugHeadingsInsideBlockquote:
    """Bug 3: # headings inside blockquotes rendered as literal '##' text
    because the heading pass ran before the blockquote pass."""

    def test_h2_inside_blockquote(self, driver_path):
        src = (
            "> ## Bug description\n"
            ">\n"
            "> The widget is broken.\n"
            ">\n"
            "> ## Steps to reproduce\n"
            ">\n"
            "> Click the button."
        )
        out = _render(driver_path, src)
        assert "Bug description" in out, (
            f"## inside blockquote must render as : {out!r}"
        )
        assert "
Steps to reproduce" in out
        # No literal '##' as visible text
        text_only = re.sub(r"<[^>]+>", "", out)
        assert "##" not in text_only, (
            f"Literal ## in rendered text — heading pass missed it: {text_only!r}"
        )

    def test_h1_h2_h3_all_render(self, driver_path):
        src = "> # H1\n> ## H2\n> ### H3"
        out = _render(driver_path, src)
        assert "H1" in out
        assert "H2" in out
        assert "H3" in out


class TestBugOrderedListInsideBlockquote:
    """Bug 4: ordered (numbered) lists inside blockquotes rendered as plain
    text — the OL pass had no equivalent of the UL branch in the old
    blockquote handler."""

    def test_ordered_list_renders_as_ol(self, driver_path):
        src = (
            "> Steps to reproduce:\n"
            ">\n"
            "> 1. Open the app\n"
            "> 2. Click the button\n"
            "> 3. Observe the crash"
        )
        out = _render(driver_path, src)
        assert "" in out and "" in out, (
            f"Numbered list inside blockquote must render as : {out!r}"
        )
        # All three list items present
        for item in ["Open the app", "Click the button", "Observe the crash"]:
            assert f">{item}" in out, (
                f"Missing {item} in {out!r}"
            )


class TestBugHorizontalRuleInsideBlockquote:
    """Bug 6: --- inside a blockquote rendered as literal text instead of ."""

    def test_hr_renders_inside_blockquote(self, driver_path):
        src = "> Above the rule\n>\n> ---\n>\n> Below the rule"
        out = _render(driver_path, src)
        assert "" in out, (
            f"--- inside blockquote must render as : {out!r}"
        )
        assert "Above the rule" in out
        assert "Below the rule" in out
        # No literal '---' as text
        text_only = re.sub(r"<[^>]+>", "", out)
        assert "---" not in text_only, (
            f"Literal --- in rendered text: {text_only!r}"
        )


class TestBugComplexBlockquoteAllFeatures:
    """Bug 5 (worst-case): a blockquote with headings, paragraphs, inline code,
    fenced code, and an ordered list. Old behaviour collapsed the entire thing
    into a monospace blob with raw markdown syntax leaking everywhere."""

    def test_complex_blockquote_renders_all_constructs(self, driver_path):
        src = (
            "> ## Description\n"
            ">\n"
            "> The widget is broken when X happens.\n"
            ">\n"
            "> ## Root cause\n"
            ">\n"
            "> The `MIME_MAP` in `api/config.py` is missing entries.\n"
            ">\n"
            "> ## Fix\n"
            ">\n"
            "> Add two entries:\n"
            ">\n"
            "> ```python\n"
            '> ".html": "text/html",\n'
            '> ".htm": "text/html",\n'
            "> ```\n"
            ">\n"
            "> ## Workflow rules\n"
            ">\n"
            "> 1. Never edit the file directly\n"
            "> 2. Create a worktree\n"
            "> 3. Run the tests\n"
            ">\n"
            "> Target branch is `master`."
        )
        out = _render(driver_path, src)
        # Multiple  headings
        assert out.count("
") >= 4, (
            f"Expected at least 4 
 headings, got {out.count('
')}: {out!r}"
        )
        # Fenced code block
        assert "" in out
        assert 'class="language-python"' in out
        # Ordered list
        assert "" in out
        # Inline code
        assert "MIME_MAP" in out
        assert "api/config.py" in out
        assert "master" in out
        # No literal markdown syntax leaking
        text_only = re.sub(r"<[^>]+>", "", out)
        assert "##" not in text_only, f"Literal ## in {text_only!r}"
        # Single  wraps everything
        assert out.count("") == 1, (
            f"Expected ONE , got {out.count('')}: {out!r}"
        )
        # No raw / as escaped text
        assert "<pre>" not in out
        assert "<div class="pre-header" not in out


class TestBlockquoteRegressionsDontTouchOutsideContent:
    """Make sure the blockquote pre-pass doesn't grab > -prefixed lines that
    sit inside a non-blockquote fenced code block (e.g. shell prompts in
    ```bash``` examples)."""

    def test_shell_prompt_in_bash_fence_not_treated_as_blockquote(self, driver_path):
        src = "```bash\n> echo hello\n```"
        out = _render(driver_path, src)
        # The > line is part of the bash code, not a blockquote
        assert "" not in out, (
            f"> line inside ```bash``` must NOT become a blockquote: {out!r}"
        )
        assert "" in out
        # Escaped > preserved as code content
        assert "> echo hello" in out

    def test_two_separate_blockquotes_stay_separate(self, driver_path):
        src = "> First quote\n\nSome plain text.\n\n> Second quote"
        out = _render(driver_path, src)
        assert out.count("") == 2, (
            f"Two separated blockquotes must stay separate: {out!r}"
        )
        assert "Some plain text." in out

    def test_nested_double_blockquote(self, driver_path):
        src = "> outer line\n> > inner line"
        out = _render(driver_path, src)
        # Should produce nested 
        assert out.count("") == 2, (
            f"Expected 2 : {out!r}"
        )


class TestBlockquoteEntityEncodedInput:
    """Blockquotes sent as HTML-entity-encoded text must still render correctly.
    LLMs sometimes emit > instead of > — the entity-decode pass must run
    BEFORE the blockquote pre-pass, not after it."""

    def test_amp_gt_prefix_becomes_blockquote(self, driver_path):
        src = "> Hello quote"
        out = _render(driver_path, src)
        assert "" in out, (
            f">-prefixed line must render as : {out!r}"
        )
        text_only = re.sub(r"<[^>]+>", "", out)
        assert "Hello quote" in text_only
        # Should not see a literal > or > in the rendered text
        assert ">" not in out, f"> should have been decoded: {out!r}"

    def test_amp_gt_fenced_code_in_blockquote(self, driver_path):
        src = "> ```python\n> x = 1\n> ```"
        out = _render(driver_path, src)
        assert "" in out, (
            f"Entity-encoded blockquote with fenced code must render: {out!r}"
        )
        assert "" in out, f"Fenced code inside entity-encoded blockquote must render: {out!r}"


class TestMermaidToolOutputGuard:
    """Line-numbered tool excerpts must not be auto-rendered as Mermaid."""

    def test_line_numbered_mermaid_fence_renders_as_code_block(self, driver_path):
        src = "```mermaid\n23|flowchart TB\n24|    A --> B\n```"
        out = _render(driver_path, src)
        assert 'class="mermaid-block"' not in out, (
            f"Line-numbered read_file excerpts are not valid Mermaid and must not auto-render: {out!r}"
        )
        assert 'mermaid' in out
        assert '' in out
        assert '23|flowchart TB' in out

    def test_valid_mermaid_fence_still_creates_mermaid_block(self, driver_path):
        out = _render(driver_path, "```mermaid\nflowchart TB\n    A --> B\n```")
        assert 'class="mermaid-block"' in out, (
            f"Valid Mermaid fences should still be queued for Mermaid rendering: {out!r}"
        )
        assert 'flowchart TB' in out

    def test_valid_mermaid_c4_fence_still_creates_mermaid_block(self, driver_path):
        out = _render(driver_path, "```mermaid\nC4Context\n    title System Context\n```")
        assert 'class="mermaid-block"' in out, (
            f"Valid C4 Mermaid fences should still be queued for Mermaid rendering: {out!r}"
        )
        assert 'C4Context' in out

    def test_valid_mermaid_frontmatter_fence_still_creates_mermaid_block(self, driver_path):
        out = _render(driver_path, "```mermaid\n---\ntitle: Demo\n---\nflowchart TB\n    A --> B\n```")
        assert 'class="mermaid-block"' in out, (
            f"Valid Mermaid fences with frontmatter should still be queued for Mermaid rendering: {out!r}"
        )
        assert 'title: Demo' in out

    def test_prose_mention_of_mermaid_fence_renders_as_code_block(self, driver_path):
        src = "```mermaid\n` fence should not be auto-rendered too aggressively.\n\nSome prose, not a diagram.\n```"
        out = _render(driver_path, src)
        assert 'class="mermaid-block"' not in out, (
            f"Prose captured by a mermaid fence is not valid Mermaid and must not auto-render: {out!r}"
        )
        assert 'mermaid' in out
        assert '' in out
        assert 'Some prose, not a diagram.' in out


class TestRawPreCodePreservation:
    """Raw  HTML from model output should remain structurally intact."""

    def test_multiline_pre_code_blocks_do_not_degrade_to_backticks(self, driver_path):
        src = (
            "line 1\n"
            "line 2\n"
            "\n\n"
            "After paragraph.\n\n"
            "line 3\n"
            "line 4\n"
            "\n\n"
            "Done."
        )
        out = _render(driver_path, src)
        assert out.count("") == 2 and out.count("") == 2, (
            f"Expected two balanced  blocks, got: {out!r}"
        )
        assert out.count("") == 2 and out.count("") == 2, (
            f"Expected two balanced  blocks, got: {out!r}"
        )
        assert "`line 1" not in out and "line 2\n`
" not in out, (
            f" content inside  must not be rewritten to backticks: {out!r}"
        )
        assert "After paragraph." in out and "Done." in out


class TestHeadingLevelsH1ThroughH6:
    """Issue #1258 — `####`, `#####`, `######` previously fell through the
    heading pass and emitted as literal text starting with `#`.  Pin all six
    levels so a future edit cannot silently regress h4–h6 again."""

    def test_all_six_heading_levels_render(self, driver_path):
        src = "# H1\n## H2\n### H3\n#### H4\n##### H5\n###### H6"
        out = _render(driver_path, src)
        assert "H1" in out, f"h1 missing: {out!r}"
        assert "H2" in out, f"h2 missing: {out!r}"
        assert "H3" in out, f"h3 missing: {out!r}"
        assert "H4" in out, f"h4 missing: {out!r}"
        assert "H5" in out, f"h5 missing: {out!r}"
        assert "H6" in out, f"h6 missing: {out!r}"

    def test_h6_does_not_partial_match_as_lower_level(self, driver_path):
        """Replacers must run longest-first; otherwise `###### H6` could be
        captured by the `^### ` rule and emit `### H6`."""
        out = _render(driver_path, "###### H6")
        assert "H6" in out, f"h6 must not be partial-matched: {out!r}"
        assert "" not in out and "###" not in out

    def test_h4_inline_markdown_still_processes(self, driver_path):
        out = _render(driver_path, "#### **bold** in h4")
        assert "
bold in h4" in out, (
            f"inline markdown inside h4 must still render: {out!r}"
        )

Heading

Bug description

: {out!r}" ) assert "

Steps to reproduce

H1

H2

H3

headings assert out.count("

") >= 4, ( f"Expected at least 4

headings, got {out.count('

H1

H2

H3

H4

H5

H6

### H6

H6

" not in out and "###" not in out def test_h4_inline_markdown_still_processes(self, driver_path): out = _render(driver_path, "#### **bold** in h4") assert "

bold in h4

" not in out and "###" not in out def test_h4_inline_markdown_still_processes(self, driver_path): out = _render(driver_path, "#### bold in h4") assert "