Testing __str__ method

force_bdss/core/data_value.py

@@ -23,8 +23,12 @@ class DataValue(HasStrictTraits):
     quality = Enum("AVERAGE", "POOR", "GOOD")
 
     def __str__(self):
-        return """
-        {} {} : {}
-        """.format(str(self.type),
-                   str(self.name),
-                   str(self.value))
+
+        s = "{} {} = {}".format(
+            str(self.type), str(self.name), str(self.value))
+
+        if self.accuracy is not None:
+            s += " +/- {}".format(str(self.accuracy))
+
+        s += " ({})".format(str(self.quality))
+        return s

force_bdss/core/tests/test_data_value.py

@@ -10,3 +10,13 @@ class TestDataValue(unittest.TestCase):
         self.assertEqual(dv.value, None)
         self.assertEqual(dv.accuracy, None)
         self.assertEqual(dv.quality, "AVERAGE")
+
+    def test_string(self):
+        dv = DataValue(type="PRESSURE", name="p1", value=10)
+        self.assertEqual(str(dv), "PRESSURE p1 = 10 (AVERAGE)")
+        dv = DataValue(type="PRESSURE",
+                       name="p1",
+                       value=10,
+                       accuracy=0.1,
+                       quality="POOR")
+        self.assertEqual(str(dv), "PRESSURE p1 = 10 +/- 0.1 (POOR)")