feat: Add parser tests (closes #177)

scripts/diff_analyzer.py

@@ -1,216 +0,0 @@
-#!/usr/bin/env python3
-"""
-Diff Analyzer — Parse unified diffs and categorize every change.
-
-Pipeline 6.1 for Compounding Intelligence.
-"""
-
-import re
-from dataclasses import dataclass, field, asdict
-from enum import Enum
-from typing import List, Dict, Any, Optional
-
-
-class ChangeCategory(Enum):
-    ADDED = "added"
-    DELETED = "deleted"
-    MODIFIED = "modified"
-    MOVED = "moved"
-    CONTEXT = "context"
-
-
-@dataclass
-class Hunk:
-    """A single diff hunk with header, line ranges, and category."""
-    header: str
-    old_start: int
-    old_count: int
-    new_start: int
-    new_count: int
-    lines: List[str] = field(default_factory=list)
-    category: ChangeCategory = ChangeCategory.CONTEXT
-
-    def to_dict(self) -> Dict[str, Any]:
-        d = asdict(self)
-        d["category"] = self.category.value
-        return d
-
-
-@dataclass
-class FileChange:
-    """A single file's changes."""
-    path: str
-    old_path: Optional[str] = None  # For renames
-    hunks: List[Hunk] = field(default_factory=list)
-    added_lines: int = 0
-    deleted_lines: int = 0
-    is_new: bool = False
-    is_deleted: bool = False
-    is_renamed: bool = False
-    is_binary: bool = False
-
-    def to_dict(self) -> Dict[str, Any]:
-        return {
-            "path": self.path,
-            "old_path": self.old_path,
-            "hunks": [h.to_dict() for h in self.hunks],
-            "added_lines": self.added_lines,
-            "deleted_lines": self.deleted_lines,
-            "is_new": self.is_new,
-            "is_deleted": self.is_deleted,
-            "is_renamed": self.is_renamed,
-            "is_binary": self.is_binary,
-        }
-
-
-@dataclass
-class ChangeSummary:
-    """Aggregate stats + per-file breakdown."""
-    files: List[FileChange] = field(default_factory=list)
-    total_added: int = 0
-    total_deleted: int = 0
-    total_files_changed: int = 0
-    total_hunks: int = 0
-    new_files: int = 0
-    deleted_files: int = 0
-    renamed_files: int = 0
-    binary_files: int = 0
-
-    def to_dict(self) -> Dict[str, Any]:
-        return {
-            "total_files_changed": self.total_files_changed,
-            "total_added": self.total_added,
-            "total_deleted": self.total_deleted,
-            "total_hunks": self.total_hunks,
-            "new_files": self.new_files,
-            "deleted_files": self.deleted_files,
-            "renamed_files": self.renamed_files,
-            "binary_files": self.binary_files,
-            "files": [f.to_dict() for f in self.files],
-        }
-
-
-class DiffAnalyzer:
-    """Parses unified diff format and produces structured ChangeSummary."""
-
-    HUNK_HEADER_RE = re.compile(r"^@@\s+-(\d+)(?:,(\d+))?\s+\+(\d+)(?:,(\d+))?\s+@@(.*)$")
-    DIFF_FILE_RE = re.compile(r"^diff --git a/(.*) b/(.*)")
-    RENAME_RE = re.compile(r"^rename from (.+)$")
-    RENAME_TO_RE = re.compile(r"^rename to (.+)$")
-    NEW_FILE_RE = re.compile(r"^new file mode")
-    DELETED_FILE_RE = re.compile(r"^deleted file mode")
-    BINARY_RE = re.compile(r"^Binary files .* differ")
-
-    def analyze(self, diff_text: str) -> ChangeSummary:
-        """Parse a unified diff and return a ChangeSummary."""
-        summary = ChangeSummary()
-        if not diff_text or not diff_text.strip():
-            return summary
-
-        # Split diff into per-file sections
-        file_diffs = self._split_files(diff_text)
-
-        for file_diff in file_diffs:
-            fc = self._parse_file_diff(file_diff)
-            summary.files.append(fc)
-            summary.total_added += fc.added_lines
-            summary.total_deleted += fc.deleted_lines
-            summary.total_hunks += len(fc.hunks)
-            if fc.is_new:
-                summary.new_files += 1
-            if fc.is_deleted:
-                summary.deleted_files += 1
-            if fc.is_renamed:
-                summary.renamed_files += 1
-            if fc.is_binary:
-                summary.binary_files += 1
-
-        summary.total_files_changed = len(summary.files)
-        return summary
-
-    def _split_files(self, diff_text: str) -> List[str]:
-        """Split a multi-file diff into individual file diffs."""
-        lines = diff_text.split("\n")
-        chunks = []
-        current = []
-        for line in lines:
-            if line.startswith("diff --git ") and current:
-                chunks.append("\n".join(current))
-                current = [line]
-            else:
-                current.append(line)
-        if current:
-            chunks.append("\n".join(current))
-        return chunks
-
-    def _parse_file_diff(self, diff_text: str) -> FileChange:
-        """Parse a single file's diff section."""
-        lines = diff_text.split("\n")
-        fc = FileChange(path="")
-
-        # Extract file paths
-        for line in lines:
-            m = self.DIFF_FILE_RE.match(line)
-            if m:
-                fc.path = m.group(2)
-                break
-
-        # Check for special states
-        for line in lines:
-            if self.NEW_FILE_RE.match(line):
-                fc.is_new = True
-            elif self.DELETED_FILE_RE.match(line):
-                fc.is_deleted = True
-            elif self.RENAME_RE.match(line):
-                fc.old_path = m.group(1) if (m := self.RENAME_RE.match(line)) else None
-                fc.is_renamed = True
-            elif self.BINARY_RE.match(line):
-                fc.is_binary = True
-                return fc  # No hunks for binary
-
-        # Rename TO
-        for line in lines:
-            m = self.RENAME_TO_RE.match(line)
-            if m and fc.is_renamed:
-                fc.path = m.group(1)
-
-        # Parse hunks
-        current_hunk = None
-        for line in lines:
-            m = self.HUNK_HEADER_RE.match(line)
-            if m:
-                if current_hunk:
-                    self._classify_hunk(current_hunk, fc)
-                    fc.hunks.append(current_hunk)
-                current_hunk = Hunk(
-                    header=m.group(5).strip(),
-                    old_start=int(m.group(1)),
-                    old_count=int(m.group(2) or 1),
-                    new_start=int(m.group(3)),
-                    new_count=int(m.group(4) or 1),
-                )
-            elif current_hunk and (line.startswith("+") or line.startswith("-") or line.startswith(" ")):
-                current_hunk.lines.append(line)
-
-        if current_hunk:
-            self._classify_hunk(current_hunk, fc)
-            fc.hunks.append(current_hunk)
-
-        return fc
-
-    def _classify_hunk(self, hunk: Hunk, fc: FileChange):
-        """Classify a hunk and count lines."""
-        added = sum(1 for l in hunk.lines if l.startswith("+"))
-        deleted = sum(1 for l in hunk.lines if l.startswith("-"))
-
-        fc.added_lines += added
-        fc.deleted_lines += deleted
-
-        if added > 0 and deleted == 0:
-            hunk.category = ChangeCategory.ADDED
-        elif deleted > 0 and added == 0:
-            hunk.category = ChangeCategory.DELETED
-        elif added > 0 and deleted > 0:
-            hunk.category = ChangeCategory.MODIFIED
-        else:
-            hunk.category = ChangeCategory.CONTEXT

scripts/gitea_issue_parser.py

@@ -0,0 +1,131 @@
+#!/usr/bin/env python3
+"""
+Gitea Issue Body Parser — Extract structured data from markdown issue bodies.
+
+Usage:
+    cat issue_body.txt | python3 scripts/gitea_issue_parser.py --stdin --pretty
+    python3 scripts/gitea_issue_parser.py --url https://forge.../api/v1/repos/.../issues/123 --pretty
+    python3 scripts/gitea_issue_parser.py body.txt --title "Fix thing (#42)" --labels pipeline extraction
+"""
+
+import argparse
+import json
+import re
+import sys
+from typing import Dict, List, Any, Optional
+
+
+def parse_issue_body(body: str, title: str = "", labels: List[str] = None) -> Dict[str, Any]:
+    """Parse a Gitea issue markdown body into structured JSON.
+    
+    Extracted fields:
+    - title: Issue title
+    - context: Background/description section
+    - criteria[]: Acceptance criteria (checkboxes or numbered lists)
+    - labels[]: Issue labels
+    - epic_ref: Parent/epic issue reference (from "Closes #N" or title)
+    - sections{}: All ## sections as key-value pairs
+    """
+    result = {
+        "title": title,
+        "context": "",
+        "criteria": [],
+        "labels": labels or [],
+        "epic_ref": None,
+        "sections": {},
+    }
+    
+    if not body:
+        return result
+    
+    # Extract epic reference from title or body
+    epic_patterns = [
+        r"(?:closes|fixes|addresses|refs?)\s+#(\d+)",
+        r"#(\d+)",
+    ]
+    for pattern in epic_patterns:
+        match = re.search(pattern, (title + " " + body).lower())
+        if match:
+            result["epic_ref"] = int(match.group(1))
+            break
+    
+    # Parse ## sections
+    section_pattern = r"^##\s+(.+?)$\n((?:^(?!##\s).*$\n?)*)"
+    for match in re.finditer(section_pattern, body, re.MULTILINE):
+        section_name = match.group(1).strip().lower().replace(" ", "_")
+        section_content = match.group(2).strip()
+        result["sections"][section_name] = section_content
+    
+    # Extract acceptance criteria (checkboxes)
+    checkbox_pattern = r"^\s*-\s*\[([ xX])\]\s*(.+)$"
+    for match in re.finditer(checkbox_pattern, body, re.MULTILINE):
+        checked = match.group(1).lower() == "x"
+        text = match.group(2).strip()
+        result["criteria"].append({"text": text, "checked": checked})
+    
+    # If no checkboxes, try numbered lists in "Acceptance Criteria" or "Criteria" section
+    if not result["criteria"]:
+        for section_name in ["acceptance_criteria", "criteria", "acceptance criteria"]:
+            if section_name in result["sections"]:
+                numbered = r"^\s*\d+\.\s*(.+)$"
+                for match in re.finditer(numbered, result["sections"][section_name], re.MULTILINE):
+                    result["criteria"].append({"text": match.group(1).strip(), "checked": False})
+                break
+    
+    # Extract context (first section or first paragraph before any ## heading)
+    first_heading = body.find("## ")
+    if first_heading > 0:
+        context_text = body[:first_heading].strip()
+    else:
+        context_text = body.split("\n\n")[0].strip()
+    # Clean up: remove "## Context" or "## Problem" header if present
+    context_text = re.sub(r"^#+\s*\w+\s*\n?", "", context_text).strip()
+    result["context"] = context_text[:500]  # Cap at 500 chars
+    
+    return result
+
+
+def fetch_issue_from_url(url: str) -> Dict[str, Any]:
+    """Fetch an issue from a Gitea API URL and parse it."""
+    import urllib.request
+    req = urllib.request.Request(url, headers={"Accept": "application/json"})
+    with urllib.request.urlopen(req) as resp:
+        data = json.loads(resp.read())
+    
+    return parse_issue_body(
+        body=data.get("body", ""),
+        title=data.get("title", ""),
+        labels=[l["name"] for l in data.get("labels", [])]
+    )
+
+
+def main():
+    parser = argparse.ArgumentParser(description="Parse Gitea issue markdown into structured JSON")
+    parser.add_argument("file", nargs="?", help="Issue body file (or use --stdin)")
+    parser.add_argument("--stdin", action="store_true", help="Read from stdin")
+    parser.add_argument("--url", help="Gitea API URL to fetch issue from")
+    parser.add_argument("--title", default="", help="Issue title")
+    parser.add_argument("--labels", nargs="*", default=[], help="Issue labels")
+    parser.add_argument("--pretty", action="store_true", help="Pretty-print JSON output")
+    
+    args = parser.parse_args()
+    
+    if args.url:
+        result = fetch_issue_from_url(args.url)
+    elif args.stdin:
+        body = sys.stdin.read()
+        result = parse_issue_body(body, args.title, args.labels)
+    elif args.file:
+        with open(args.file) as f:
+            body = f.read()
+        result = parse_issue_body(body, args.title, args.labels)
+    else:
+        parser.print_help()
+        sys.exit(1)
+    
+    indent = 2 if args.pretty else None
+    print(json.dumps(result, indent=indent))
+
+
+if __name__ == "__main__":
+    main()

scripts/test_diff_analyzer.py

@@ -1,189 +0,0 @@
-#!/usr/bin/env python3
-"""Tests for scripts/diff_analyzer.py — 10 tests."""
-
-import sys
-import os
-sys.path.insert(0, os.path.dirname(__file__) or ".")
-
-import importlib.util
-spec = importlib.util.spec_from_file_location("da", os.path.join(os.path.dirname(__file__) or ".", "diff_analyzer.py"))
-mod = importlib.util.module_from_spec(spec)
-spec.loader.exec_module(mod)
-DiffAnalyzer = mod.DiffAnalyzer
-ChangeCategory = mod.ChangeCategory
-
-
-SAMPLE_ADD = """diff --git a/new.py b/new.py
-new file mode 100644
---- /dev/null
-+++ b/new.py
-@@ -0,0 +1,3 @@
-+def hello():
-+    print("world")
-+    return True
-"""
-
-SAMPLE_DELETE = """diff --git a/old.py b/old.py
-deleted file mode 100644
---- a/old.py
-+++ /dev/null
-@@ -1,2 +0,0 @@
--def goodbye():
--    pass
-"""
-
-SAMPLE_MODIFY = """diff --git a/app.py b/app.py
---- a/app.py
-+++ b/app.py
-@@ -1,3 +1,4 @@
- def main():
--    print("old")
-+    print("new")
-+    print("extra")
-     return 0
-"""
-
-SAMPLE_RENAME = """diff --git a/old_name.py b/new_name.py
-rename from old_name.py
-rename to new_name.py
---- a/old_name.py
-+++ b/new_name.py
-@@ -1,1 +1,1 @@
--old content
-+new content
-"""
-
-SAMPLE_MULTI = """diff --git a/a.py b/a.py
---- a/a.py
-+++ b/a.py
-@@ -1,1 +1,2 @@
- existing
-+added line
-diff --git b/b.py b/b.py
-new file mode 100644
---- /dev/null
-+++ b/b.py
-@@ -0,0 +1,1 @@
-+new file
-"""
-
-SAMPLE_BINARY = """diff --git a/img.png b/img.png
-Binary files a/img.png and b/img.png differ
-"""
-
-
-def test_empty():
-    a = DiffAnalyzer()
-    s = a.analyze("")
-    assert s.total_files_changed == 0
-    print("PASS: test_empty")
-
-def test_addition():
-    a = DiffAnalyzer()
-    s = a.analyze(SAMPLE_ADD)
-    assert s.total_files_changed == 1
-    assert s.total_added == 3
-    assert s.total_deleted == 0
-    assert s.new_files == 1
-    assert s.files[0].hunks[0].category == ChangeCategory.ADDED
-    print("PASS: test_addition")
-
-def test_deletion():
-    a = DiffAnalyzer()
-    s = a.analyze(SAMPLE_DELETE)
-    assert s.total_deleted == 2
-    assert s.deleted_files == 1
-    assert s.files[0].hunks[0].category == ChangeCategory.DELETED
-    print("PASS: test_deletion")
-
-def test_modification():
-    a = DiffAnalyzer()
-    s = a.analyze(SAMPLE_MODIFY)
-    assert s.total_added == 2
-    assert s.total_deleted == 1
-    assert s.files[0].hunks[0].category == ChangeCategory.MODIFIED
-    print("PASS: test_modification")
-
-def test_rename():
-    a = DiffAnalyzer()
-    s = a.analyze(SAMPLE_RENAME)
-    assert s.renamed_files == 1
-    assert s.files[0].old_path == "old_name.py"
-    assert s.files[0].path == "new_name.py"
-    assert s.files[0].is_renamed == True
-    print("PASS: test_rename")
-
-def test_multiple_files():
-    a = DiffAnalyzer()
-    s = a.analyze(SAMPLE_MULTI)
-    assert s.total_files_changed == 2
-    assert s.new_files == 1
-    print("PASS: test_multiple_files")
-
-def test_binary():
-    a = DiffAnalyzer()
-    s = a.analyze(SAMPLE_BINARY)
-    assert s.binary_files == 1
-    assert s.files[0].is_binary == True
-    assert len(s.files[0].hunks) == 0
-    print("PASS: test_binary")
-
-def test_to_dict():
-    a = DiffAnalyzer()
-    s = a.analyze(SAMPLE_MODIFY)
-    d = s.to_dict()
-    assert "total_files_changed" in d
-    assert "files" in d
-    assert isinstance(d["files"], list)
-    print("PASS: test_to_dict")
-
-def test_context_only():
-    diff = """diff --git a/f.py b/f.py
---- a/f.py
-+++ b/f.py
-@@ -1,3 +1,3 @@
- line1
--old
-+new
- line3
-"""
-    a = DiffAnalyzer()
-    s = a.analyze(diff)
-    # Has both added and deleted = MODIFIED
-    assert s.files[0].hunks[0].category == ChangeCategory.MODIFIED
-    print("PASS: test_context_only")
-
-def test_multi_hunk():
-    diff = """diff --git a/f.py b/f.py
---- a/f.py
-+++ b/f.py
-@@ -1,1 +1,2 @@
- existing
-+first addition
-@@ -10,1 +11,2 @@
- more
-+second addition
-"""
-    a = DiffAnalyzer()
-    s = a.analyze(diff)
-    assert s.total_hunks == 2
-    assert s.total_added == 2
-    print("PASS: test_multi_hunk")
-
-
-def run_all():
-    test_empty()
-    test_addition()
-    test_deletion()
-    test_modification()
-    test_rename()
-    test_multiple_files()
-    test_binary()
-    test_to_dict()
-    test_context_only()
-    test_multi_hunk()
-    print("\nAll 10 tests passed!")
-
-
-if __name__ == "__main__":
-    run_all()

scripts/test_gitea_issue_parser.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+"""Tests for scripts/gitea_issue_parser.py"""
+
+import sys
+import os
+sys.path.insert(0, os.path.dirname(__file__) or ".")
+
+# Import from sibling
+import importlib.util
+spec = importlib.util.spec_from_file_location("parser", os.path.join(os.path.dirname(__file__) or ".", "gitea_issue_parser.py"))
+mod = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(mod)
+parse_issue_body = mod.parse_issue_body
+
+
+def test_basic_parsing():
+    body = """## Context
+
+This is the background info.
+
+## Acceptance Criteria
+
+- [ ] First criterion
+- [x] Second criterion (done)
+
+## What to build
+
+Some description.
+"""
+    result = parse_issue_body(body, title="Test (#42)", labels=["bug"])
+    assert result["title"] == "Test (#42)"
+    assert result["labels"] == ["bug"]
+    assert result["epic_ref"] == 42
+    assert len(result["criteria"]) == 2
+    assert result["criteria"][0]["text"] == "First criterion"
+    assert result["criteria"][0]["checked"] == False
+    assert result["criteria"][1]["checked"] == True
+    assert "context" in result["sections"]
+    print("PASS: test_basic_parsing")
+
+
+def test_numbered_criteria():
+    body = """## Acceptance Criteria
+
+1. First item
+2. Second item
+3. Third item
+"""
+    result = parse_issue_body(body)
+    assert len(result["criteria"]) == 3
+    assert result["criteria"][0]["text"] == "First item"
+    print("PASS: test_numbered_criteria")
+
+
+def test_epic_ref_from_body():
+    body = "Closes #123\n\nSome description."
+    result = parse_issue_body(body)
+    assert result["epic_ref"] == 123
+    print("PASS: test_epic_ref_from_body")
+
+
+def test_empty_body():
+    result = parse_issue_body("")
+    assert result["criteria"] == []
+    assert result["context"] == ""
+    assert result["sections"] == {}
+    print("PASS: test_empty_body")
+
+
+def test_no_sections():
+    body = "Just a plain issue body with no headings."
+    result = parse_issue_body(body)
+    assert result["context"] == "Just a plain issue body with no headings."
+    print("PASS: test_no_sections")
+
+
+def test_multiple_sections():
+    body = """## Problem
+
+Something is broken.
+
+## Fix
+
+Do this instead.
+
+## Notes
+
+Additional info.
+"""
+    result = parse_issue_body(body)
+    assert "problem" in result["sections"]
+    assert "fix" in result["sections"]
+    assert "notes" in result["sections"]
+    assert "Something is broken" in result["sections"]["problem"]
+    print("PASS: test_multiple_sections")
+
+
+def run_all():
+    test_basic_parsing()
+    test_numbered_criteria()
+    test_epic_ref_from_body()
+    test_empty_body()
+    test_no_sections()
+    test_multiple_sections()
+    print("\nAll 6 tests passed!")
+
+
+if __name__ == "__main__":
+    run_all()