Add a test for the --no-clean flag

Author: cderv

tests/smoke/render/render-output-dir.test.ts

@@ -10,14 +10,15 @@
 import { existsSync, safeRemoveSync } from "../../../src/deno_ral/fs.ts";
 import { docs } from "../../utils.ts";
 import { isWindows } from "../../../src/deno_ral/platform.ts";
-import { pathDoNotExists } from "../../verify.ts";
+import { fileExists, pathDoNotExists } from "../../verify.ts";
 import { testRender } from "./render.ts";
 
 if (isWindows) {
-  const inputDir =  docs("render-output-dir/");
-  const quartoDir = ".quarto"
-  const outputDir = "output-test-dir"
+  const inputDir = docs("render-output-dir/");
+  const quartoDir = ".quarto";
+  const outputDir = "output-test-dir";
 
+  // Test 1: Default behavior (clean=true) - .quarto should be removed
   testRender(
     "test.qmd",
     "html",
@@ -39,11 +40,41 @@ if (isWindows) {
           safeRemoveSync(outputDir, { recursive: true });
         }
         if (existsSync(quartoDir)) {
-              safeRemoveSync(quartoDir, { recursive: true });
+          safeRemoveSync(quartoDir, { recursive: true });
         }
       },
-    },  
+    },
     ["--output-dir", outputDir],
     outputDir,
   );
+
+  // Test 2: With --no-clean flag - .quarto should be preserved
+  testRender(
+    "test.qmd",
+    "html",
+    false,
+    [fileExists(quartoDir)],
+    {
+      cwd: () => inputDir,
+      setup: async () => {
+        // Ensure output and quarto dirs are removed before test
+        if (existsSync(outputDir)) {
+          safeRemoveSync(outputDir, { recursive: true });
+        }
+        if (existsSync(quartoDir)) {
+          safeRemoveSync(quartoDir, { recursive: true });
+        }
+      },
+      teardown: async () => {
+        if (existsSync(outputDir)) {
+          safeRemoveSync(outputDir, { recursive: true });
+        }
+        if (existsSync(quartoDir)) {
+          safeRemoveSync(quartoDir, { recursive: true });
+        }
+      },
+    },
+    ["--output-dir", outputDir, "--no-clean"],
+    outputDir,
+  );
 }