Add ToGeohash and FromGeohash operations

test/tests/operations/FromGeohash.mjs

@@ -0,0 +1,34 @@
+/**
+ * To Geohash tests
+ *
+ * @author gchq77703
+ *
+ * @copyright Crown Copyright 2018
+ * @license Apache-2.0
+ */
+import TestRegister from "../../TestRegister";
+
+TestRegister.addTests([
+    {
+        name: "From Geohash",
+        input: "ww8p1r4t8\nww8p1r\nww8\nw",
+        expectedOutput: "37.83238649368286,112.55838632583618\n37.83416748046875,112.5604248046875\n37.265625,113.203125\n22.5,112.5",
+        recipeConfig: [
+            {
+                op: "From Geohash",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "From Geohash",
+        input: "w\nw\n\n\nw",
+        expectedOutput: "22.5,112.5\n0,0\n22.5,112.5\n0,0\n0,0\n22.5,112.5",
+        recipeConfig: [
+            {
+                op: "From Geohash",
+                args: [],
+            },
+        ],
+    },
+]);