Squashed 'libnatspec/natspecjs/' content from commit 4f31ed9

git-subtree-dir: libnatspec/natspecjs
git-subtree-split: 4f31ed9698be96c347ea769b8b7e77a9507fb615

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+var chai = require('chai');
+var natspec = require('../natspec.js');
+var assert = chai.assert;
+
+describe('natspec', function () {
+    it('should evaluate simple expression', function () {
+        // given
+        var expression = "`x = 1` + `y = 2` will be equal `x + y`";
+
+        // when
+        var result = natspec.evaluateExpression(expression);
+        var result2 = natspec.evaluateExpressionSafe(expression);
+
+        // then
+        assert.equal(result, "1 + 2 will be equal 3");
+        assert.equal(result2, "1 + 2 will be equal 3");
+    });
+
+    it('should evalute expression using input params', function () {
+        //given
+        var expression = "Will multiply `a` by 7 and return `a * 7`.";
+        var method = 'multiply';
+        var abi = [{
+            "name": "multiply",
+            "constant": false,
+            "type": "function",
+            "inputs": [{
+                "name": "a",
+                "type": "uint256"
+            }],
+            "outputs": [{
+                "name": "d",
+                "type": "uint256"
+            }]
+        }];
+
+        var transaction = {
+            "jsonrpc": "2.0",
+            "method": "eth_call",
+            "params": [{
+                "to": "0x8521742d3f456bd237e312d6e30724960f72517a",
+                "data": "0xc6888fa1000000000000000000000000000000000000000000000000000000000000007a"
+            }],
+            "id": 6
+        };
+        
+        var call = {
+            method: method,
+            abi: abi,
+            transaction: transaction
+        };
+
+        // when
+        var result = natspec.evaluateExpression(expression, call);
+        var result2 = natspec.evaluateExpressionSafe(expression, call);
+        
+        // then
+        assert.equal(result, "Will multiply 122 by 7 and return 854.");
+        assert.equal(result2, "Will multiply 122 by 7 and return 854.");
+    });
+    
+    it('should evalute expression using input params', function () {
+        //given
+        var expression = "Will multiply `a` by 7 and return `a * 7`.";
+        var method = 'multiply';
+        var abi = [{
+            "name": "multiply",
+            "constant": false,
+            "type": "function",
+            "inputs": [{
+                "name": "b",
+                "type": "uint256"
+            }],
+            "outputs": [{
+                "name": "d",
+                "type": "uint256"
+            }]
+        }];
+
+        var transaction = {
+            "jsonrpc": "2.0",
+            "method": "eth_call",
+            "params": [{
+                "to": "0x8521742d3f456bd237e312d6e30724960f72517a",
+                "data": "0xc6888fa1000000000000000000000000000000000000000000000000000000000000007a"
+            }],
+            "id": 6
+        };
+        
+        var call = {
+            method: method,
+            abi: abi,
+            transaction: transaction
+        };
+
+        // when
+        var exceptionThrow = function () { natspec.evaluateExpression(expression, call);}
+        var result = natspec.evaluateExpressionSafe(expression, call); 
+        
+        // then
+        assert.equal(result, "Natspec evaluation failed, wrong input params");
+        assert.throws(exceptionThrow, "Natspec evaluation failed, wrong input params");
+    });
+
+    it('should evalute expression using input params', function () {
+        //given
+        var expression = "Will multiply `a` by 7 and return `a * 7`.";
+        var method = 'multiply2';
+        var abi = [{
+            "name": "multiply",
+            "constant": false,
+            "type": "function",
+            "inputs": [{
+                "name": "a",
+                "type": "uint256"
+            }],
+            "outputs": [{
+                "name": "d",
+                "type": "uint256"
+            }]
+        }];
+
+        var transaction = {
+            "jsonrpc": "2.0",
+            "method": "eth_call",
+            "params": [{
+                "to": "0x8521742d3f456bd237e312d6e30724960f72517a",
+                "data": "0xc6888fa1000000000000000000000000000000000000000000000000000000000000007a"
+            }],
+            "id": 6
+        };
+        
+        var call = {
+            method: method,
+            abi: abi,
+            transaction: transaction
+        };
+
+        // when
+        var exceptionThrow = function () { natspec.evaluateExpression(expression, call);}
+        var result = natspec.evaluateExpressionSafe(expression, call); 
+        
+        // then
+        assert.equal(result, "Natspec evaluation failed, method does not exist");
+        assert.throws(exceptionThrow, "Natspec evaluation failed, method does not exist");
+    });
+});
+
+