Index: binaries/data/mods/public/globalscripts/tests/test_ModificationTemplates.js
===================================================================
--- /dev/null
+++ binaries/data/mods/public/globalscripts/tests/test_ModificationTemplates.js
@@ -0,0 +1,17 @@
+(function test_json_simple()
+{
+let template = {
+	"affects": ["ClassA"],
+	"modifications": [
+		{ "value": "TestA", "multiply": 1.15, "affects": "ClassB" },
+		{ "value": "TestB", "add": 2 },
+		{ "value": "TestC", "replace": 3, "affects": "ClassA" }
+	]
+};
+let modifiers = DeriveModificationsFromTech(template);
+TS_ASSERT_UNEVAL_EQUALS(modifiers, {
+	"TestA": [{ "affects": [["ClassA", "ClassB"]], "multiply": 1.15 }],
+	"TestB": [{ "affects": [["ClassA"]], "add": 2 }],
+	"TestC": [{ "affects": [["ClassA", "ClassA"]], "replace": 3 }]
+});
+})();