diff -r f44c530f80da -r ff0aa9b1397a test/harness/testcase.c
--- a/test/harness/testcase.c	Sat Oct 26 18:47:33 2013 +0100
+++ b/test/harness/testcase.c	Fri Oct 25 11:15:18 2013 +0100
@@ -7,6 +7,7 @@
 #include <bl/bl.h>
 #include "testcase.h"
 #include "testcaseinput.h"
+#include "testcaseoutput.h"
 
 GQuark testcase_error_quark(void)
 {
@@ -171,6 +172,64 @@
     return g_string_free(filename,FALSE);
 }
 
+/*
+ * Verify that all the output files specified by a testcase are present
+ * with the expected contents. 
+ */
+gboolean testcase_verify_output_files(Testcase *testcase)
+{
+    GSList *link;
+    GError *tmp_err=NULL;
+    gboolean retval=TRUE;
+    ssize_t offset;
+    gchar *contents;
+    TestcaseOutput *output;
+    for(link=testcase->outputs;link;link=link->next)
+    {
+	output=link->data;
+	if (!testcase_output_read(testcase,output,&contents,NULL,&tmp_err))
+	{
+	    g_print("%s: FAIL\n",testcase->basename);
+	    g_print("%s\n",tmp_err->message);
+	    g_clear_error(&tmp_err);
+	    retval=FALSE;
+	    break;
+	}
+	else
+	{
+	    if (strcmp(contents,output->contents))
+	    {
+		g_print("%s: FAIL\n",testcase->basename);
+		offset=common_prefix_length(contents,output->contents);
+		if (!offset && !contents[offset])
+		    g_print("%s: Unexpected empty output from bookloupe.\n",
+		      output->name);
+		else
+		{
+		    g_print("%s: Unexpected output from bookloupe:\n",
+		      output->name);
+		    print_unexpected(contents,offset);
+		}
+		retval=FALSE;
+	    }
+	    g_free(contents);
+	    break;
+	}
+    }
+    for(link=testcase->outputs;link;link=link->next)
+	if (!testcase_output_remove(testcase,link->data,&tmp_err))
+	{
+	    if (retval)
+	    {
+		g_print("%s: FAIL\n",testcase->basename);
+		g_print("%s\n",tmp_err->message);
+		retval=TRUE;
+	    }
+	    g_clear_error(&tmp_err);
+	}
+    return retval;
+}
+
 gboolean testcase_spawn_bookloupe(Testcase *testcase,char **standard_output,
   GError **error)
 {
@@ -496,7 +555,7 @@
     gboolean r;
     size_t pos,offset;
     GString *header;
-    char *output,*filename,*s,*summary,*xfail=NULL;
+    char *filename,*s,*summary,*xfail=NULL;
     GError *error=NULL;
     if (!testcase_create_input_files(testcase,&error))
     {
@@ -505,7 +564,7 @@
 	g_error_free(error);
 	return FALSE;
     }
-    r=testcase_spawn_bookloupe(testcase,&output,&error);
+    r=testcase_spawn_bookloupe(testcase,&testcase->test_output,&error);
     if (!r)
     {
 	g_print("%s: FAIL\n",testcase->basename);
@@ -522,41 +581,47 @@
 	g_error_free(error);
 	return FALSE;
     }
-    header=g_string_new("\n\nFile: ");
-    g_string_append(header,filename);
-    g_string_append(header,"\n");
-    if (!g_str_has_prefix(output,header->str))
+    if (testcase->expected || testcase->warnings)
     {
-	g_print("%s: FAIL\n",testcase->basename);
-	g_print("Unexpected header from bookloupe:\n");
-	offset=common_prefix_length(output,header->str);
-	print_unexpected(output,offset);
-	r=FALSE;
-    }
-    pos=header->len;
-    if (r)
-    {
-	/* Find the end of the summary */
-	s=strstr(output+pos,"\n\n");
-	if (s)
-	{
-	    summary=g_strndup(output+pos,s-(output+pos));
-	    r=testcase_check_summary(testcase,summary);
-	    g_free(summary);
-	    pos=s-output+2;
-	}
-	else
+	header=g_string_new("\n\nFile: ");
+	g_string_append(header,filename);
+	g_string_append(header,"\n");
+	if (!g_str_has_prefix(testcase->test_output,header->str))
 	{
 	    g_print("%s: FAIL\n",testcase->basename);
-	    g_print("Unterminated summary from bookloupe:\n%s\n",output+pos);
+	    g_print("Unexpected header from bookloupe:\n");
+	    offset=common_prefix_length(testcase->test_output,header->str);
+	    print_unexpected(testcase->test_output,offset);
 	    r=FALSE;
 	}
+	summary=testcase->test_output+header->len;
+	pos=header->len;
+	if (r)
+	{
+	    /* Find the end of the summary */
+	    s=strstr(summary,"\n\n");
+	    if (s)
+	    {
+		summary=g_strndup(summary,s-summary);
+		r=testcase_check_summary(testcase,summary);
+		g_free(summary);
+		pos=s-testcase->test_output+2;
+	    }
+	    else
+	    {
+		g_print("%s: FAIL\n",testcase->basename);
+		g_print("Unterminated summary from bookloupe:\n%s\n",summary);
+		r=FALSE;
+	    }
+	}
+	g_string_free(header,TRUE);
+	if (r)
+	    r=testcase_check_warnings(testcase,testcase->test_output+pos,
+	      &xfail);
     }
-    g_string_free(header,TRUE);
-    if (r)
-	r=testcase_check_warnings(testcase,output+pos,&xfail);
+    if (!testcase_verify_output_files(testcase))
+	r=FALSE;
     g_free(filename);
-    g_free(output);
     if (r)
     {
 	if (xfail)
@@ -617,5 +682,6 @@
     g_slist_free(testcase->warnings);
     g_free(testcase->encoding);
     g_strfreev(testcase->options);
+    g_free(testcase->test_output);
     g_free(testcase);
 }