[gnome-continuous-yocto/gnomeostree-3.28-rocko: 1854/8267] oeqa/oetest: Improve subprocess error reporting

[Emmanuele Bassi <ebassi src gnome org>]

commit 896f1c7696abe467c83c0e0a0bd29609249d3111
Author: Richard Purdie <richard purdie linuxfoundation org>
Date:   Mon Aug 15 17:56:40 2016 +0100

    oeqa/oetest: Improve subprocess error reporting
    
    Without this, we get to know the command failed and the exit code but
    have no idea how the command failed since we don't get the output by
    default.
    
    This makes it much easier to see what went wrong and stand a chance of
    fixing it.
    
    (From OE-Core rev: b020b01d41ccaae5d679f1f7950af2e1a1788d39)
    
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/lib/oeqa/oetest.py |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/meta/lib/oeqa/oetest.py b/meta/lib/oeqa/oetest.py
index 5146312..cf7e862 100644
--- a/meta/lib/oeqa/oetest.py
+++ b/meta/lib/oeqa/oetest.py
@@ -136,6 +136,15 @@ class oeRuntimeTest(oeTest):
             if status != 0:
                 return status
 
+class OETestCalledProcessError(subprocess.CalledProcessError):
+    def __str__(self):
+        if hasattr(self, "stderr"):
+            return "Command '%s' returned non-zero exit status %d with output %s and stderr %s" % (self.cmd, 
self.returncode, self.output, self.stderr)
+        else:
+            return "Command '%s' returned non-zero exit status %d with output %s" % (self.cmd, 
self.returncode, self.output)
+
+subprocess.CalledProcessError = OETestCalledProcessError
+
 class oeSDKTest(oeTest):
     def __init__(self, methodName='runTest'):
         self.sdktestdir = oeSDKTest.tc.sdktestdir