Add a renderer module to render markdown content

1 files changed, 38 insertions, 0 deletions

diff --git a/src/renderer.rs b/src/renderer.rs
new file mode 100644
index 0000000..518abd8
--- /dev/null
+++ b/src/renderer.rs
@@ -0,0 +1,38 @@
+pub fn render(project_name: &str, files: &[(&str, &str)]) -> String {
+    let mut output = format!("# {}\n", project_name);
+    if !files.is_empty() {
+        output.push_str("\n## Files\n");
+    }
+    for (filename, content) in files {
+        output.push_str(&format!("\n### {}\n```\n{}\n```\n", filename, content));
+    }
+    output
+}
+
+#[cfg(test)]
+mod tests {
+    use super::render;
+
+    #[test]
+    fn empty_project_renders_only_title() {
+        let output = render("Project name", &[]);
+        assert_eq!(output, "# Project name\n");
+    }
+
+    #[test]
+    fn single_file_is_rendered() {
+        let files = vec![("main.rs", "fn main() {}")];
+
+        let output = render("Project name", &files);
+
+        assert_eq!(
+            output,
+            "# Project name\n\n\
+            ## Files\n\n\
+            ### main.rs\n\
+            ```\n\
+            fn main() {}\n\
+            ```\n"
+        );
+    }
+}