[gnome-continuous-yocto/gnomeostree-3.28-rocko: 541/8267] oetest.py: Add json file support to specify packages needed in runtime tests

[Emmanuele Bassi <ebassi src gnome org>]

commit 8a6891095831f9d2b58d5c943093f21eda8e7616
Author: Mariano Lopez <mariano lopez linux intel com>
Date:   Tue May 24 12:44:13 2016 +0000

    oetest.py: Add json file support to specify packages needed in runtime tests
    
    This adds the functionality to use a json file to
    specify the packages needed for a particular test.
    
    The content of the json file is a dictionary with
    dictionaries inside, using the test name as the hash.
    
    The json file must have the same name as the class
    module name and must be in the same path.
    
    [YOCTO #7850]
    
    (From OE-Core rev: 1f24ef9a339a2ad34e010f39aa93abdc8d085c85)
    
    Signed-off-by: Mariano Lopez <mariano lopez linux intel com>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/lib/oeqa/oetest.py |   37 +++++++++++++++++++++++++++++++++++++
 1 files changed, 37 insertions(+), 0 deletions(-)
---
diff --git a/meta/lib/oeqa/oetest.py b/meta/lib/oeqa/oetest.py
index 8ad3715..7abd850 100644
--- a/meta/lib/oeqa/oetest.py
+++ b/meta/lib/oeqa/oetest.py
@@ -385,6 +385,43 @@ class RuntimeTestContext(TestContext):
         if oeTest.hasPackage("procps"):
             oeRuntimeTest.pscmd = "ps -ef"
 
+    def _getJsonFile(self, module):
+        """
+        Returns the path of the JSON file for a module, empty if doesn't exitst.
+        """
+
+        module_file = module.filename
+        json_file = "%s.json" % module_file.rsplit(".", 1)[0]
+        if os.path.isfile(module_file) and os.path.isfile(json_file):
+            return json_file
+        else:
+            return ""
+
+    def _getNeededPackages(self, json_file, test=None):
+        """
+        Returns a dict with needed packages based on a JSON file.
+
+
+        If a test is specified it will return the dict just for that test.
+        """
+
+        import json
+
+        needed_packages = {}
+
+        with open(json_file) as f:
+            test_packages = json.load(f)
+        for key,value in test_packages.items():
+            needed_packages[key] = value
+
+        if test:
+            if test in needed_packages:
+                needed_packages = needed_packages[test]
+            else:
+                needed_packages = {}
+
+        return needed_packages
+
 class ImageTestContext(RuntimeTestContext):
     def __init__(self, d, target, host_dumper):
         super(ImageTestContext, self).__init__(d, target)