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node_modules/command-exists/test/test.js

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+'use strict';
+
+var expect = require('expect.js');
+var commandExists = require('..');
+var commandExistsSync = commandExists.sync;
+var resolve = require('path').resolve;
+var isUsingWindows = process.platform == 'win32'
+
+describe('commandExists', function(){
+    describe('async - callback', function() {
+        it('it should find a command named ls or xcopy', function(done){
+            var commandToUse = 'ls'
+            if (isUsingWindows) {
+                commandToUse = 'xcopy'
+            }
+
+            commandExists(commandToUse, function(err, exists) {
+                expect(err).to.be(null);
+                expect(exists).to.be(true);
+                done();
+            });
+        });
+
+        it('it should not find a command named fdsafdsafdsafdsafdsa', function(done){
+            commandExists('fdsafdsafdsafdsafdsa', function(err, exists) {
+                expect(err).to.be(null);
+                expect(exists).to.be(false);
+                done();
+            });
+        });
+    });
+
+    describe('async - promise', function() {
+        it('it should find a command named ls or xcopy', function(done){
+            var commandToUse = 'ls'
+            if (isUsingWindows) {
+                commandToUse = 'xcopy'
+            }
+
+            commandExists(commandToUse)
+            .then(function(command) {
+                expect(command).to.be(commandToUse);
+                done();
+            });
+        });
+
+        it('it should not find a command named fdsafdsafdsafdsafdsa', function(done){
+            commandExists('fdsafdsafdsafdsafdsa')
+            .then(function() {
+                // We should not execute this line.
+                expect(true).to.be(false);
+            })
+            .catch(function() {
+                done();
+            });
+        });
+    });
+
+    describe('sync', function() {
+        it('it should find a command named ls or xcopy', function(){
+            var commandToUse = 'ls'
+            if (isUsingWindows) {
+                commandToUse = 'xcopy'
+            }
+            expect(commandExistsSync(commandToUse)).to.be(true);
+        });
+
+        it('it should not find a command named fdsafdsafdsafdsafdsa', function(){
+            expect(commandExistsSync('fdsafdsafdsafdsafdsa')).to.be(false);
+        });
+
+        it('it should not find a command named ls or xcopy prefixed with some nonsense', function(){
+            var commandToUse = 'fdsafdsa ls'
+            if (isUsingWindows) {
+                commandToUse = 'fdsafdsaf xcopy'
+            }
+            expect(commandExistsSync(commandToUse)).to.be(false);
+        });
+
+        it('it should not execute some nefarious code', function(){
+            expect(commandExistsSync('ls; touch /tmp/foo0')).to.be(false);
+        });
+
+        it('it should not execute some nefarious code', function(){
+            expect(commandExistsSync('ls touch /tmp/foo0')).to.be(false);
+        });
+    });
+
+    describe('local file', function() {
+        it('it should report false if there is a non-executable file with that name', function(done) {
+            var commandToUse = 'test/non-executable-script.js'
+            commandExists(commandToUse)
+                .then(function(command){
+                    // We should not execute this line.
+                    expect(true).to.be(false);
+                }).catch(function(err){
+                    expect(err).to.be(null);
+                    done();
+                });
+        });
+
+
+        if (!isUsingWindows) {
+            it('it should report true if there is an executable file with that name', function(done) {
+                var commandToUse = 'test/executable-script.js'
+                commandExists(commandToUse)
+                    .then(function(command){
+                        // We should not execute this line.
+                        expect(command).to.be(commandToUse);
+                        done();
+                    });
+            });
+        }
+
+        if (isUsingWindows) {
+            it('it should report true if there is an executable file with that name', function(done) {
+                var commandToUse = 'test\\executable-script.cmd'
+                commandExists(commandToUse)
+                    .then(function(command){
+                        expect(command).to.be(commandToUse);
+                        done();
+                    });
+            });
+
+            it('it should report false if there is a double quotation mark in the file path', function() {
+                var commandToUse = 'test\\"executable-script.cmd'
+                expect(commandExists.sync(commandToUse)).to.be(false);
+            });
+        }
+    });
+
+    describe('absolute path', function() {
+        it('it should report true if there is a command with that name in absolute path', function(done) {
+            var commandToUse = resolve('test/executable-script.js');
+            commandExists(commandToUse)
+            .then(function(command){
+                expect(command).to.be(commandToUse);
+                done();
+            });
+        });
+        
+        it('it should report false if there is not a command with that name in absolute path', function() {
+            var commandToUse = resolve('executable-script.js');
+            expect(commandExists.sync(commandToUse)).to.be(false);
+        });
+    });
+});