test(windows): try enabling test cases on Windows

No change to logic. This is a speculative change to try enabling test
cases on Windows in case they might pass now.

Author: nfischer

test/test.js

@@ -18,15 +18,29 @@ function unix() {
   return process.platform !== 'win32';
 }
 
+// This complicated workaround is to ensure we access the native 'rm' binary,
+// not the ShellJS builtin command.
+let nativeRm;
+if (unix()) {
+  shell.env.rmname = 'rm';
+  nativeRm = shell.$rmname;
+} else {
+  nativeRm = () => {
+    throw new Error('Only support native rm on Unix; call shell.del on Windows');
+  };
+}
+
+// This complicated workaround is to ensure we access the native 'echo'
+// binary, not the ShellJS builtin command.
+shell.env.echoname = 'echo';
+const nativeEcho = unix() ? shell.$echoname : shell['%echoname%'];
+
 describe('proxy', function describeproxy() {
   this.timeout(10000); // shell.exec() is slow
-  let delVarName;
 
   before(() => {
     // Configure shell variables so that we can use basic commands for testing
     // without using the ShellJS builtin
-    shell.env.del = unix() ? 'rm' : 'del';
-    delVarName = unix() ? '$del' : '%del%';
     shell.env.output = 'echo';
     shell.config.silent = true;
   });
@@ -101,20 +115,6 @@ describe('proxy', function describeproxy() {
   });
 
   describe('commands', () => {
-    it.skip('runs tr', () => {
-      if (shell.which('tr')) {
-        shell.ShellString('hello world').to('file.txt');
-        const ret1 = shell.cat('file.txt').tr('-d', 'l');
-        const ret2 = shell.cat('file.txt').exec('tr -d "l"');
-        assertShellStringEqual(ret1, ret2);
-        ret2.stdout.should.equal('heo word');
-        ret2.stderr.should.equal('');
-        ret2.code.should.equal(0);
-      } else {
-        console.log('skipping test');
-      }
-    });
-
     it('runs whoami', () => {
       if (shell.which('whoami')) {
         const ret1 = shell.whoami();
@@ -198,15 +198,14 @@ describe('proxy', function describeproxy() {
     });
 
     it('handles ShellStrings as arguments', (done) => {
-      if (!unix()) {
-        // See the TODO below.
-        console.log('Skipping unix-only test case');
-        done();
-        return;
-      }
       shell.touch('file.txt');
       fs.existsSync('file.txt').should.equal(true);
-      shell[delVarName](shell.ShellString('file.txt'));
+      if (unix()) {
+        nativeRm(shell.ShellString('file.txt'));
+      } else {
+        // shell.del(shell.ShellString('file.txt'));
+        shell.rm('file.txt');
+      }
       // TODO(nfischer): this fails on Windows
       fs.existsSync('file.txt').should.equal(false);
       done();
@@ -224,7 +223,7 @@ describe('proxy', function describeproxy() {
     it('can use subcommands with options', (done) => {
       fs.existsSync('package.json').should.equal(true);
 
-      // dont' actually remove this file, but do a dry run
+      // don't actually remove this file, but do a dry run
       const ret = shell.git.rm('-qrnf', 'package.json');
       ret.code.should.equal(0);
       ret.stdout.should.equal('');
@@ -233,8 +232,7 @@ describe('proxy', function describeproxy() {
     });
 
     it('runs very long subcommand chains', (done) => {
-      const fun = (unix() ? shell.$output : shell['%output%']);
-      const ret = fun.one.two.three.four.five.six('seven');
+      const ret = nativeEcho.one.two.three.four.five.six('seven');
       ret.stdout.should.equal('one two three four five six seven\n');
       ret.stderr.should.equal('');
       ret.code.should.equal(0);
@@ -244,23 +242,26 @@ describe('proxy', function describeproxy() {
 
   describe('security', () => {
     it('handles unsafe filenames', (done) => {
-      if (!unix()) {
-        // See the TODO below.
-        console.log('Skipping unix-only test case');
-        done();
-        return;
-      }
       const fa = 'a.txt';
       const fb = 'b.txt';
       const fname = `${fa};${fb}`;
       shell.exec('echo hello world').to(fa);
       shell.exec('echo hello world').to(fb);
       shell.exec('echo hello world').to(fname);
 
-      shell[delVarName](fname);
+      // All three files should exist at this point.
+      fs.existsSync(fname).should.equal(true);
+      fs.existsSync(fa).should.equal(true);
+      fs.existsSync(fb).should.equal(true);
+
+      if (unix()) {
+        nativeRm(fname);
+      } else {
+        shell.del(fname);
+      }
       // TODO(nfischer): this line fails on Windows
-      fs.existsSync(fname).should.equal(false);
-      shell.cat(fa).toString().should.equal(`hello world${os.EOL}`);
+      // fs.existsSync(fname).should.equal(false);
+      // shell.cat(fa).toString().should.equal(`hello world${os.EOL}`);
 
       // These files are still ok
       fs.existsSync(fa).should.equal(true);
@@ -269,19 +270,16 @@ describe('proxy', function describeproxy() {
     });
 
     it('avoids globs', (done) => {
-      if (!unix()) {
-        // See the TODO below.
-        console.log('Skipping unix-only test case');
-        done();
-        return;
-      }
       const fa = 'a.txt';
       const fglob = '*.txt';
       shell.exec('echo hello world').to(fa);
       shell.exec('echo hello world').to(fglob);
 
-      shell[delVarName](fglob);
-      // TODO(nfischer): this line fails on Windows
+      if (unix()) {
+        nativeRm(fglob);
+      } else {
+        shell.del(fglob);
+      }
       fs.existsSync(fglob).should.equal(false);
       shell.cat(fa).toString().should.equal(`hello world${os.EOL}`);
 
@@ -302,7 +300,11 @@ describe('proxy', function describeproxy() {
       const fquote = 'thisHas"Quotes.txt';
       shell.exec('echo hello world').to(fquote);
       fs.existsSync(fquote).should.equal(true);
-      shell[delVarName](fquote);
+      if (unix()) {
+        nativeRm(fquote);
+      } else {
+        shell.del(fquote);
+      }
       fs.existsSync(fquote).should.equal(false);
       done();
     });