[Libguestfs] [PATCH] generator: Allow individual tests to depend on daemon features.

[Richard W.M. Jones]

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>From f9d08600c52dc0730e7dad8d9259b59e32aeece2 Mon Sep 17 00:00:00 2001
From: Richard Jones <rjones at redhat.com>
Date: Thu, 3 Jun 2010 14:31:58 +0100
Subject: [PATCH 2/4] generator: Allow individual tests to depend on daemon features.

Using IfAvailable "featurename" we allow individual tests to
only run if the feature is available in the daemon.

This will allow us to extend testing to a lot more optional
features such as NTFS.
---
 src/generator.ml |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/generator.ml b/src/generator.ml
index 939f1f6..4d74cb0 100755
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -309,6 +309,9 @@ and test_prereq =
     (* As for 'If' but the test runs _unless_ the code returns true. *)
   | Unless of string
 
+    (* Run the test only if 'string' is available in the daemon. *)
+  | IfAvailable of string
+
 (* Some initial scenarios for testing. *)
 and test_init =
     (* Do nothing, block devices could contain random stuff including
@@ -6862,7 +6865,7 @@ is_available (const char *group)
     fun (_, _, _, _, tests, _, _) ->
       let tests = filter_map (
         function
-        | (_, (Always|If _|Unless _), test) -> Some test
+        | (_, (Always|If _|Unless _|IfAvailable _), test) -> Some test
         | (_, Disabled, _) -> None
       ) tests in
       let seq = List.concat (List.map seq_of_test tests) in
@@ -7068,7 +7071,7 @@ static int %s_skip (void)
 " test_name name (String.uppercase test_name) (String.uppercase name);
 
   (match prereq with
-   | Disabled | Always -> ()
+   | Disabled | Always | IfAvailable _ -> ()
    | If code | Unless code ->
        pr "static int %s_prereq (void)\n" test_name;
        pr "{\n";
@@ -7117,6 +7120,13 @@ static int %s (void)
        pr "  }\n";
        pr "\n";
        generate_one_test_body name i test_name init test;
+   | IfAvailable group ->
+       pr "  if (!is_available (\"%s\")) {\n" group;
+       pr "    printf (\"        %%s skipped (reason: %%s not available)\\n\", \"%s\", \"%s\");\n" test_name group;
+       pr "    return 0;\n";
+       pr "  }\n";
+       pr "\n";
+       generate_one_test_body name i test_name init test;
    | Always ->
        generate_one_test_body name i test_name init test
   );
-- 
1.6.6.1