test: use const for all require() calls

PR-URL: #10550 Reviewed-By: Rich Trott <rtrott@gmail.com>

Author: cjihrig

test/addons/async-hello-world/test.js

@@ -1,6 +1,6 @@
 'use strict';
 const common = require('../../common');
-var assert = require('assert');
+const assert = require('assert');
 const binding = require(`./build/${common.buildType}/binding`);
 
 binding(5, common.mustCall(function(err, val) {

test/addons/hello-world-function-export/test.js

@@ -1,6 +1,6 @@
 'use strict';
 const common = require('../../common');
-var assert = require('assert');
+const assert = require('assert');
 const binding = require(`./build/${common.buildType}/binding`);
 assert.strictEqual(binding(), 'world');
 console.log('binding.hello() =', binding());

test/addons/hello-world/test.js

@@ -1,6 +1,6 @@
 'use strict';
 const common = require('../../common');
-var assert = require('assert');
+const assert = require('assert');
 const binding = require(`./build/${common.buildType}/binding`);
 assert.strictEqual(binding.hello(), 'world');
 console.log('binding.hello() =', binding.hello());

test/addons/load-long-path/test.js

@@ -32,6 +32,6 @@ var contents = fs.readFileSync(addonPath);
 fs.writeFileSync(addonDestinationPath, contents);
 
 // Attempt to load at long path destination
-var addon = require(addonDestinationPath);
+const addon = require(addonDestinationPath);
 assert.notEqual(addon, null);
 assert.strictEqual(addon.hello(), 'world');

test/addons/repl-domain-abort/test.js

@@ -1,9 +1,9 @@
 'use strict';
-var common = require('../../common');
-var assert = require('assert');
-var repl = require('repl');
-var stream = require('stream');
-var path = require('path');
+const common = require('../../common');
+const assert = require('assert');
+const repl = require('repl');
+const stream = require('stream');
+const path = require('path');
 var buildType = process.config.target_defaults.default_configuration;
 var buildPath = path.join(__dirname, 'build', buildType, 'binding');
 // On Windows, escape backslashes in the path before passing it to REPL.

test/debugger/helper-debugger-repl.js

@@ -1,7 +1,7 @@
 'use strict';
 const common = require('../common');
-var assert = require('assert');
-var spawn = require('child_process').spawn;
+const assert = require('assert');
+const spawn = require('child_process').spawn;
 
 process.env.NODE_DEBUGGER_TIMEOUT = 2000;
 var port = common.PORT;

test/debugger/test-debugger-repl-break-in-module.js

@@ -1,6 +1,6 @@
 'use strict';
 require('../common');
-var repl = require('./helper-debugger-repl.js');
+const repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('break-in-module/main.js');
 

test/debugger/test-debugger-repl-restart.js

@@ -1,6 +1,6 @@
 'use strict';
 require('../common');
-var repl = require('./helper-debugger-repl.js');
+const repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('breakpoints.js');
 var linesWithBreakpoint = [

test/debugger/test-debugger-repl-term.js

@@ -2,7 +2,7 @@
 require('../common');
 process.env.NODE_FORCE_READLINE = 1;
 
-var repl = require('./helper-debugger-repl.js');
+const repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('breakpoints.js');
 

test/debugger/test-debugger-repl-utf8.js

@@ -1,5 +1,5 @@
 'use strict';
-var common = require('../common');
+const common = require('../common');
 var script = common.fixturesDir + '/breakpoints_utf8.js';
 process.env.NODE_DEBUGGER_TEST_SCRIPT = script;