Update sched-credit test to match new format from xm sched-credit.

Signed-off-by: Ewan Mellor <ewan@xensource.com>

tools/xm-test/tests/sched-credit/01_sched_credit_weight_cap_pos.py

@@ -2,14 +2,27 @@
 #
 # Sched-credit tests modified from SEDF tests
 #
+
+import re
+
 from XmTestLib import *
 
+paramsRE = re.compile(r'^[^ ]* *[^ ]* *([^ ]*) *([^ ]*)$')
+
 def get_sched_credit_params(domain):
-    status, output = traceCommand("xm sched-credit -d %s" %(domain.getName()))
-    params = output.strip('{}').split(', ')
-    cap = int(params[0].split(':')[1].strip(' '))
-    weight = int(params[1].split(':')[1].strip(' '))
-    return (status, (weight, cap))
+    status, output = traceCommand("xm sched-credit -d %s | tail -1" %
+                                  domain.getName())
+
+    if status != 0:
+        FAIL("Getting sched-credit parameters return non-zero rv (%d)",
+             status)
+
+    m = paramsRE.match(output)
+    if not m:
+        FAIL("xm sched-credit gave bad output")
+    weight = int(m.group(1))
+    cap = int(m.group(2))
+    return (weight, cap)
 
 def set_sched_credit_weight(domain, weight):
     status, output = traceCommand("xm sched-credit -d %s -w %d" %(domain.getName(), weight))
@@ -31,11 +44,8 @@ except DomainError, e:
     FAIL(str(e))
 
 # check default param values
-(status, params) = get_sched_credit_params(domain)
-if status != 0:
-    FAIL("Getting sched-credit parameters return non-zero rv (%d)", status)
+(weight, cap) = get_sched_credit_params(domain)
 
-(weight, cap) = params
 if weight != 256:
     FAIL("default weight is 256 (got %d)", weight)
 if cap != 0:
@@ -51,11 +61,8 @@ if status != 0:
     FAIL("Setting sched-credit cap return non-zero rv (%d)", status)
 
 # check new param values
-(status, params) = get_sched_credit_params(domain)
-if status != 0:
-    FAIL("Getting sched-credit parameters return non-zero rv (%d)", status)
+(weight, cap) = get_sched_credit_params(domain)
 
-(weight, cap) = params
 if weight != 512:
     FAIL("expected weight of 512 (got %d)", weight)
 if cap != 100: