add unit test & test cov

.travis.yml

@@ -0,0 +1,7 @@
+language: node_js
+node_js:
+  - '4'
+sudo: false
+script:
+  - "npm run test-cov"
+after_script: "npm install coveralls && cd test &&  cat coverage.lcov | ../node_modules/coveralls/bin/coveralls.js && cd .."

examples/async_toggle2.js

@@ -8,7 +8,7 @@ wait.every(500).and(function(){
   //forever - never return true
   gpio.toggle();
 
-}).forever();
+}).forward();
 
 process.on("SIGINT", function(){
   gpio.close();

package.json

@@ -7,8 +7,9 @@
     "rpio": "^0.9.11"
   },
   "devDependencies": {
+    "consoler": "^0.2.0",
     "chokidar": "^1.6.0",
-    "wait-promise": "^0.3.2",
+    "wait-promise": "0.4.1",
     "babel-cli": "6.x.x",
     "babel-runtime": "6.x.x",
     "mocha": "^2.3.4",
@@ -17,7 +18,9 @@
     "babel-plugin-transform-coverage": "^0.1.5"
   },
   "scripts": {
-    "test": "babel lib --out-dir test/lib --plugins ../test/transform_rpio_sim.js && mocha test/spec.js"
+    "test": "babel lib --out-dir test/lib --plugins ../test/transform_rpio_sim.js && mocha test/spec.js",
+    "printcov": "script/printcov.js  test/coverage.lcov lib",
+    "test-cov": "babel lib --out-dir test/lib --plugins ../test/transform_rpio_sim.js,transform-coverage && mocha test/spec.js --reporter=mocha-lcov-reporter > test/coverage.lcov && npm run printcov"
   },
   "repository": {
     "type": "git",

script/printcov.js

@@ -0,0 +1,87 @@
+#!/usr/bin/env node
+
+var fs = require('fs');
+var consoler = require('consoler');
+consoler.add('warning: uncovered code', 'yellow');
+
+if(process.argv.length < 3){
+  console.log('printcov lcov-file [source-src]');
+  process.exit(0);
+}
+
+var lcov = process.argv[2];
+var source = process.argv[3];
+
+function percentage(covered, statements){
+  var percentage = Math.floor(100 * covered/statements);
+  var color = 'cyan';
+
+  if(percentage >= 80 && percentage < 100){
+    color = 'magenta';
+  }else if(percentage >= 40 && percentage < 80){
+    color = 'yellow';
+  }else if(percentage < 40){
+    color = 'red';
+  }      
+  return (percentage + '%')[color];
+}
+
+function print(){
+  var content = fs.readFileSync(lcov, 'utf-8');
+
+  console.log('Generated test coverages:\n');
+
+  var total = 0, total_covered = 0;
+
+  if(content){
+    var lines = content.split(/\n/g);
+
+    var file = null, covered = 0, statements = 0, 
+        sourceMap = null, linesNotCovered = [];
+
+    lines.forEach((line) => {
+      var fileBegin = /^SF:(.+)$/.exec(line),
+          fileEnd = /^end_of_record$/.exec(line),
+          lineCover = /^DA:(\d+),(\d+)/.exec(line);
+
+      if(fileBegin){
+        file = fileBegin[1];
+        if(source){
+          var sourceFile = require('path').join(source, file);
+          sourceMap = fs.readFileSync(sourceFile, 'utf-8');
+          sourceMap = sourceMap.split(/\n/g);
+        }
+      } else if(fileEnd){
+        console.log(`${file}: ${percentage(covered, statements)}`);
+
+        if(linesNotCovered.length){
+          consoler('warning: uncovered code', linesNotCovered.map((l) => `\tline ${l}: ${sourceMap[l-1]}`).join('\n').red);
+        }
+
+        total += statements;
+        total_covered += covered;
+
+        file = null;
+        covered = 0;
+        statements = 0;
+        sourceMap = null;
+        linesNotCovered = [];
+      } else if(lineCover){
+        var n = lineCover[2]|0;
+        var l = lineCover[1]|0;
+
+        if(n > 0){
+          covered++;
+        }else{
+          if(sourceMap){
+            linesNotCovered.push(l);
+          }
+        }
+        statements++;
+      }
+    });
+  }
+  console.log(`\ntotal: ${percentage(total_covered, total)}\n`);
+}
+
+print();