Add a new transform DSL, with rules and test for draft1 to draft 2 transformation (#46)

Author: suprith-hub

DSL/transform.md

@@ -156,6 +156,41 @@ Replaces the value at the given path with an absolute value.
 }
 ```
 
+### `replace-with-1-by-ten-power-value`
+
+Replaces the value at the given path with the result of 1 divided by 10 raised to the power of the current value.
+
+- **Takes**: `path`
+
+**Before**:
+
+```json
+{
+    "$schema": "http://json-schema.org/draft-01/schema#",
+    "exponent": 2,
+    "rate": 3
+}
+```
+
+**Transform**:
+
+```json
+[
+    { "operation": "replace-with-1-by-ten-power-value", "path": [ "exponent" ] },
+    { "operation": "replace-with-1-by-ten-power-value", "path": [ "rate" ] }
+]
+```
+
+**After**:
+
+```json
+{
+    "$schema": "http://json-schema.org/draft-02/schema#",
+    "exponent": 0.01,
+    "rate": 0.001
+}
+```
+
 ### `remove`
 
 Removes the key and its respective value at the given path.

rules/from-draft1/to-draft2/001-unknown-in-previous-draft-uniqueItems.json

@@ -0,0 +1,9 @@
+{
+    "vocabulary": "none",
+    "condition": [ 
+        { "operation": "has-key", "path": [], "value": "uniqueItems" }
+    ],
+    "transform": [
+        { "operation": "prefix-until-unique", "path": [ "uniqueItems" ], "value": "x-" } 
+    ]
+}

rules/from-draft1/to-draft2/002-maxDecimal.json

@@ -0,0 +1,9 @@
+{
+    "vocabulary": "validation",
+    "condition": [ 
+        { "operation": "has-key", "path": [], "value": "maxDecimal" }
+    ],
+    "transform": [
+        { "operation": "replace-with-1-by-ten-power-value", "path": [ "maxDecimal" ] } 
+    ]
+}

test/from-draft1/to-draft2/maxDecimal.json

@@ -0,0 +1,11 @@
+[
+    {
+        "title": "maxDecimal present in the schema",
+        "from": {
+            "maxDecimal": 2
+        },
+        "to": {
+            "maxDecimal": 0.01
+        }
+    }
+]

test/from-draft1/to-draft2/unknown-in-previous-draft-uniqueItems.json

@@ -0,0 +1,24 @@
+[
+    {
+        "title": "uniqueItems present in the schema",
+        "from": {
+            "uniqueItems": "newbie"
+        },
+        "to": {
+            "x-uniqueItems": "newbie"            
+        }
+    },
+    {
+        "title": "uniqueItems with uniqueItems having `x-` as prefix",
+        "from": {
+            "x-uniqueItems": "expert",
+            "x-x-uniqueItems": "master",
+            "uniqueItems": "newbie"
+        },
+        "to": {
+            "x-uniqueItems": "expert",
+            "x-x-uniqueItems": "master",
+            "x-x-x-uniqueItems": "newbie"
+        }
+    }
+]