Add tests for function macro

Split out macros ns that it can be tested. Merged in handler ns as it is
only used for the function macro

src/test/frontend/components/block/macros_test.cljs

@@ -0,0 +1,35 @@
+(ns frontend.components.block.macros-test
+  (:require [frontend.components.block.macros :as block-macros]
+            [clojure.test :refer [deftest are testing is]]))
+
+(deftest macro-function
+  (testing "Default table functions with property argument"
+    (are [user-input result]
+         (= result
+            (block-macros/function-macro
+             (mapv #(hash-map :block/properties %) [{:total 10} {:total 20} {:total 30}])
+             [user-input]))
+      "(sum :total)" 60
+      "(average :total)" 20
+      "(max :total)" 30
+      "(min :total)" 10
+      "(count :total)" 3))
+
+  (testing "Table function with clojure function argument"
+    (is (= 130
+           (block-macros/function-macro
+            (mapv #(hash-map :block/properties %)
+                  [{:total 10 :qty 3} {:total 20 :qty 5}])
+            ["(sum (map (fn [x] (* (:total x) (:qty x))) result))"]))))
+
+  (testing "Edge cases"
+    (is (= 40
+           (block-macros/function-macro
+            (mapv #(hash-map :block/properties %) [{:total 10} {} {:total 30}])
+            ["(sum :total)"]))
+        "Function still works when some results are missing property")
+    (is (= 0
+           (block-macros/function-macro
+            (mapv #(hash-map :block/properties %) [{:total 10} {} {:total 30}])
+            ["(sum :totally)"]))
+        "Function gives back 0 when given wrong property")))