Added tests for parsing Generic Resources

Signed-off-by: Renaud Gaubert <rgaubert@nvidia.com>

Author: Renaud Gaubert

opts/opts_test.go

@@ -306,3 +306,35 @@ func TestParseLink(t *testing.T) {
 		t.Fatalf("Expected error 'bad format for links: link:alias:wrong' but got: %v", err)
 	}
 }
+
+func TestGenericResource(t *testing.T) {
+	var g GenericResource
+	var err error
+
+	err = g.Set("orange={red,green,blue}")
+	if err == nil {
+		t.Fatalf("Expected Generic Resource to fail for a NamedResourceSpec in a service")
+	}
+
+	err = g.Set("orange={red,green,blue};apple=3")
+	if err == nil {
+		t.Fatalf("Expected Generic Resource to fail for a NamedResourceSpec in a service")
+	}
+
+	err = g.Set("orange=2;apple=2")
+	if err != nil {
+		t.Fatalf("Expected GenericResource not to fail for a DiscreteResourceSpec but got %v", err)
+	}
+
+	for _, v := range g.Value() {
+		if v.DiscreteResourceSpec == nil {
+			t.Fatalf("Expected a DiscreteResourceSpec got nil instead")
+		}
+
+		if v.DiscreteResourceSpec.Value != int64(2) {
+			t.Fatalf("Expected DiscreteResourceSpec to have value 2, got %d instead",
+				v.DiscreteResourceSpec.Value)
+		}
+	}
+
+}