add builder

tests/test_builder.py

@@ -1,6 +1,6 @@
 from datetime import date
 from zona.models import Metadata
-from zona.builder import split_metadata, discover
+from zona.builder import split_metadata, discover, build
 from pathlib import Path
 
 
@@ -43,12 +43,13 @@ description: This is a test.
     """)
 
     style = staticd / "style.css"
-    style.write_text("""
+    style_content = """
 p {
   color: red;
   text-align: center;
 }
-""")
+"""
+    style.write_text(style_content)
 
     items = discover(tmp_path, outd)
 
@@ -61,6 +62,7 @@ p {
     assert md_item.url == "post.md"
     assert isinstance(md_item.metadata, Metadata)
     assert md_item.metadata.title == "Test Post"
+    assert md_item.content is not None
     assert md_item.content.strip() == "# Hello World"
 
     st_item = items[1]
@@ -69,3 +71,39 @@ p {
     assert st_item.destination.is_relative_to(outd)
     assert st_item.url == "static/style.css"
     assert st_item.metadata is None
+
+
+def test_build(tmp_path: Path):
+    contentd = tmp_path / "content"
+    staticd = contentd / "static"
+    templatesd = tmp_path / "templates"
+    outd = tmp_path / "out"
+
+    for d in [contentd, staticd, templatesd, outd]:
+        d.mkdir()
+    md_file = contentd / "post.md"
+    md_content = """---
+title: Test Post
+date: 2025-06-03
+description: This is a test.
+---
+
+# Hello World
+    """
+    md_file.write_text(md_content)
+
+    style = staticd / "style.css"
+    style_content = """
+p {
+  color: red;
+  text-align: center;
+}
+"""
+    style.write_text(style_content)
+
+    items = discover(tmp_path, outd)
+    build(items)
+    html = (outd / "post.html").read_text()
+    assert html.strip() == "<h1>Hello World</h1>"
+    s = (outd / "static" / "style.css").read_text()
+    assert s.strip() == style_content.strip()