Auto-exclude benchmark contenders that fail compilation

test/bench/perf.js

@@ -7,11 +7,22 @@ var assert = require('assert');
 var Benchmark = require('benchmark');
 var semver = require('semver');
 
-var imagemagick = require('imagemagick');
+// Contenders
-var imagemagickNative = require('imagemagick-native');
 var gm = require('gm');
-var lwip = require('lwip');
+var imagemagick = require('imagemagick');
 var sharp = require('../../index');
+var imagemagickNative;
+try {
+  imagemagickNative = require('imagemagick-native');
+} catch (err) {
+  console.log('Excluding imagemagick-native');
+}
+var lwip;
+try {
+  lwip = require('lwip');
+} catch (err) {
+  console.log('Excluding lwip');
+}
 
 var fixtures = require('../fixtures');
 
@@ -27,7 +38,10 @@ sharp.cache(0);
 async.series({
   jpeg: function(callback) {
     var inputJpgBuffer = fs.readFileSync(fixtures.inputJpg);
-    (new Benchmark.Suite('jpeg')).add('lwip-file-file', {
+    var jpegSuite = new Benchmark.Suite('jpeg');
+    // lwip
+    if (typeof lwip !== 'undefined') {
+      jpegSuite.add('lwip-file-file', {
         defer: true,
         fn: function(deferred) {
           lwip.open(fixtures.inputJpg, function (err, image) {
@@ -68,7 +82,10 @@ async.series({
             });
           });
         }
-    }).add('imagemagick-file-file', {
+      });
+    }
+    // imagemagick
+    jpegSuite.add('imagemagick-file-file', {
       defer: true,
       fn: function(deferred) {
         imagemagick.resize({
@@ -87,7 +104,10 @@ async.series({
           }
         });
       }
-    }).add('imagemagick-native-buffer-buffer', {
+    });
+    // imagemagick-native
+    if (typeof imagemagickNative !== 'undefined') {
+      jpegSuite.add('imagemagick-native-buffer-buffer', {
         defer: true,
         fn: function(deferred) {
           imagemagickNative.convert({
@@ -106,7 +126,10 @@ async.series({
             }
           });
         }
-    }).add('gm-buffer-file', {
+      });
+    }
+    // gm
+    jpegSuite.add('gm-buffer-file', {
       defer: true,
       fn: function(deferred) {
         gm(inputJpgBuffer)
@@ -168,7 +191,9 @@ async.series({
             }
           });
       }
-    }).add('sharp-buffer-file', {
+    });
+    // sharp
+    jpegSuite.add('sharp-buffer-file', {
       defer: true,
       fn: function(deferred) {
         sharp(inputJpgBuffer).resize(width, height).toFile(fixtures.outputJpg, function(err) {
@@ -446,6 +471,8 @@ async.series({
   png: function(callback) {
     var inputPngBuffer = fs.readFileSync(fixtures.inputPng);
     var pngSuite = new Benchmark.Suite('png');
+    // lwip
+    if (typeof lwip !== 'undefined') {
       pngSuite.add('lwip-buffer-buffer', {
         defer: true,
         fn: function(deferred) {
@@ -467,7 +494,10 @@ async.series({
             });
           });
         }
-    }).add('imagemagick-file-file', {
+      });
+    }
+    // imagemagick
+    pngSuite.add('imagemagick-file-file', {
       defer: true,
       fn: function(deferred) {
         imagemagick.resize({
@@ -484,7 +514,10 @@ async.series({
           }
         });
       }
-    }).add('imagemagick-native-buffer-buffer', {
+    });
+    // imagemagick-native
+    if (typeof imagemagickNative !== 'undefined') {
+      pngSuite.add('imagemagick-native-buffer-buffer', {
         defer: true,
         fn: function(deferred) {
           imagemagickNative.convert({
@@ -496,7 +529,10 @@ async.series({
           });
           deferred.resolve();
         }
-    }).add('gm-file-file', {
+      });
+    }
+    // gm
+    pngSuite.add('gm-file-file', {
       defer: true,
       fn: function(deferred) {
         gm(fixtures.inputPng)
@@ -525,7 +561,9 @@ async.series({
             }
           });
       }
-    }).add('sharp-buffer-file', {
+    });
+    // sharp
+    pngSuite.add('sharp-buffer-file', {
       defer: true,
       fn: function(deferred) {
         sharp(inputPngBuffer).resize(width, height).toFile(fixtures.outputPng, function(err) {