test: give js-native-api tests consistent names

The convention for js-native-api/<test_name>:
  * <test_name>.c or <test_name>.cc has the entry point
  * The name of the target is <test_name>

Author: gabrielschulhof

test/js-native-api/2_function_arguments/binding.c renamed to test/js-native-api/2_function_arguments/2_function_arguments.c

@@ -1,10 +1,10 @@
 {
   "targets": [
     {
-      "target_name": "binding",
+      "target_name": "2_function_arguments",
       "sources": [
         "../entry_point.c",
-        "binding.c"
+        "2_function_arguments.c"
       ]
     }
   ]

test/js-native-api/2_function_arguments/binding.gyp

@@ -1,6 +1,6 @@
 'use strict';
 const common = require('../../common');
 const assert = require('assert');
-const addon = require(`./build/${common.buildType}/binding`);
+const addon = require(`./build/${common.buildType}/2_function_arguments`);
 
 assert.strictEqual(addon.add(3, 5), 8);

test/js-native-api/2_function_arguments/test.js

@@ -1,10 +1,10 @@
 {
   "targets": [
     {
-      "target_name": "binding",
+      "target_name": "3_callbacks",
       "sources": [
         "../entry_point.c",
-        "binding.c"
+        "3_callbacks.c"
       ]
     }
   ]

test/js-native-api/3_callbacks/binding.c renamed to test/js-native-api/3_callbacks/3_callbacks.c

@@ -1,7 +1,7 @@
 'use strict';
 const common = require('../../common');
 const assert = require('assert');
-const addon = require(`./build/${common.buildType}/binding`);
+const addon = require(`./build/${common.buildType}/3_callbacks`);
 
 addon.RunCallback(function(msg) {
   assert.strictEqual(msg, 'hello world');

test/js-native-api/3_callbacks/binding.gyp

@@ -1,10 +1,10 @@
 {
   "targets": [
     {
-      "target_name": "binding",
+      "target_name": "4_object_factory",
       "sources": [
         "../entry_point.c",
-        "binding.c"
+        "4_object_factory.c"
       ]
     }
   ]

test/js-native-api/3_callbacks/test.js

@@ -1,7 +1,7 @@
 'use strict';
 const common = require('../../common');
 const assert = require('assert');
-const addon = require(`./build/${common.buildType}/binding`);
+const addon = require(`./build/${common.buildType}/4_object_factory`);
 
 const obj1 = addon('hello');
 const obj2 = addon('world');