test for fix

pollen/test/test-poly.rkt

@@ -2,11 +2,15 @@
 (require rackunit
          pollen/setup
          racket/runtime-path
-         pollen/render)
+         pollen/render
+         racket/file)
 
 ;; define-runtime-path only allowed at top level
 (define-runtime-path poly-dir "data/poly")
 (define-runtime-path poly-source "data/poly/test.poly.pm")
+(define-runtime-path pollen-cache "data/poly/compiled")
+(define-runtime-path test.txt "data/poly/test.txt")
+(define-runtime-path test.html "data/poly/test.html")
 
 (parameterize ([current-directory poly-dir]
                [current-project-root poly-dir]
@@ -15,3 +19,19 @@
     (check-equal? (render poly-source) "TITLE is **big**"))
   (parameterize ([current-poly-target 'html])
     (check-equal? (render poly-source) (format "~v" '(root (h2 "title") " is " (strong "big"))))))
+
+(parameterize ([current-output-port (open-output-string)]
+               [current-directory poly-dir]
+               [current-project-root poly-dir])
+
+  ;; make sure that batch works with multiple output files
+  ;; related to one poly sourc
+  ;; or duplicate output files (which will only be rendered once)
+  (for ([parallel? (list #true #false)])
+    (render-batch #:parallel parallel? test.html test.txt test.html)
+    (check-equal? (file->string test.txt) "TITLE is **big**")
+    (check-equal? (file->string test.html) (format "~v" '(root (h2 "title") " is " (strong "big"))))
+    (delete-file test.txt)
+    (delete-file test.html)))
+
+(delete-directory/files pollen-cache)