tests for abi.filters

2 files changed, 59 insertions, 1 deletions

diff --git a/lib/abi.js b/lib/abi.js
index a0752647f..a0c862593 100644
--- a/lib/abi.js
+++ b/lib/abi.js
@@ -73,6 +73,14 @@ var filterFunctions = function (json) {
     }); 
 };
 
+/// Filters all events form input abi
+/// @returns abi array with filtered objects of type 'event'
+var filterEvents = function (json) {
+    return json.filter(function (current) {
+        return current.type === 'event';
+    });
+};
+
 /// @param string string to be padded
 /// @param number of characters that result string should have
 /// @param sign, by default 0
@@ -414,6 +422,7 @@ module.exports = {
     methodDisplayName: methodDisplayName,
     methodTypeName: methodTypeName,
     getMethodWithName: getMethodWithName,
-    filterFunctions: filterFunctions
+    filterFunctions: filterFunctions,
+    filterEvents: filterEvents
 };
 
diff --git a/test/abi.filters.js b/test/abi.filters.js
new file mode 100644
index 000000000..42385fd2a
--- /dev/null
+++ b/test/abi.filters.js
@@ -0,0 +1,49 @@
+var assert = require('assert');
+var abi = require('../lib/abi.js');
+
+describe('abi', function() {
+    it('should filter functions and events from input array properly', function () {
+
+        // given
+        var description = [{
+            "name": "test",
+            "type": "function",
+            "inputs": [{
+                "name": "a",
+                "type": "uint256"
+            }
+            ],
+            "outputs": [
+            {
+                "name": "d",
+                "type": "uint256"
+            }
+            ],
+        }, {
+            "name": "test2",
+            "type": "event",
+            "inputs": [{
+                "name": "a",
+                "type": "uint256"
+            }
+            ],
+            "outputs": [
+            {
+                "name": "d",
+                "type": "uint256"
+            }
+            ]
+        }];
+        
+        // when
+        var events = abi.filterEvents(description);
+        var functions = abi.filterFunctions(description);
+
+        // then
+        assert.equal(events.length, 1);
+        assert.equal(events[0].name, 'test2');
+        assert.equal(functions.length, 1);
+        assert.equal(functions[0].name, 'test');
+        
+    });
+});