[unit-test] Fixed issue with multiple unit-tests + added solo unit-test

unittest/test_load.py

 #!/usr/bin/env python2
 
+import sys
 import unittest
 import example_robot_data
 
@@ -21,6 +22,18 @@ class RobotTestCase(unittest.TestCase):
         self.assertTrue(hasattr(self.ROBOT, "q0"), "It doesn't have q0")
 
 
+class HyQTest(RobotTestCase):
+    RobotTestCase.ROBOT = example_robot_data.loadHyQ()
+    RobotTestCase.NQ = 19
+    RobotTestCase.NV = 18
+
+
+class TalosTest(RobotTestCase):
+    RobotTestCase.ROBOT = example_robot_data.loadTalos()
+    RobotTestCase.NQ = 39
+    RobotTestCase.NV = 38
+
+
 class TalosArmTest(RobotTestCase):
     RobotTestCase.ROBOT = example_robot_data.loadTalosArm()
     RobotTestCase.NQ = 7
@@ -33,20 +46,26 @@ class TalosArmFloatingTest(RobotTestCase):
     RobotTestCase.NV = 13
 
 
-class TalosTest(RobotTestCase):
-    RobotTestCase.ROBOT = example_robot_data.loadTalos()
-    RobotTestCase.NQ = 39
-    RobotTestCase.NV = 38
-
-
 class TalosLegsTest(RobotTestCase):
     RobotTestCase.ROBOT = example_robot_data.loadTalosLegs()
     RobotTestCase.NQ = 19
     RobotTestCase.NV = 18
 
 
-class HyQTest(RobotTestCase):
-    RobotTestCase.ROBOT = example_robot_data.loadHyQ()
+class ICubTest(RobotTestCase):
+    RobotTestCase.ROBOT = example_robot_data.loadICub(reduced=False)
+    RobotTestCase.NQ = 39
+    RobotTestCase.NV = 38
+
+
+class SoloTest(RobotTestCase):
+    RobotTestCase.ROBOT = example_robot_data.loadSolo()
+    RobotTestCase.NQ = 15
+    RobotTestCase.NV = 14
+
+
+class Solo12Test(RobotTestCase):
+    RobotTestCase.ROBOT = example_robot_data.loadSolo(False)
     RobotTestCase.NQ = 19
     RobotTestCase.NV = 18
 
@@ -63,11 +82,17 @@ class TiagoNoHandTest(RobotTestCase):
     RobotTestCase.NV = 12
 
 
-class ICubTest(RobotTestCase):
-    RobotTestCase.ROBOT = example_robot_data.loadICub(reduced=False)
-    RobotTestCase.NQ = 39
-    RobotTestCase.NV = 38
-
-
 if __name__ == '__main__':
-    unittest.main()
+    test_classes_to_run = [
+        HyQTest, TalosTest, TalosArmTest, TalosArmFloatingTest, TalosLegsTest, ICubTest, SoloTest, Solo12Test,
+        TiagoTest, TiagoNoHandTest
+    ]
+    loader = unittest.TestLoader()
+    suites_list = []
+    for test_class in test_classes_to_run:
+        suite = loader.loadTestsFromTestCase(test_class)
+        suites_list.append(suite)
+    big_suite = unittest.TestSuite(suites_list)
+    runner = unittest.TextTestRunner()
+    results = runner.run(big_suite)
+    sys.exit(not results.wasSuccessful())