move v.v to cmd/v

cmd/tools/vtest.v

@@ -0,0 +1,56 @@
+module main
+
+import (
+	os
+	os.cmdline
+	testing
+)
+
+pub fn main() {
+	args := os.args
+	if args.last() == 'test' {
+		println('Usage:')
+		println('   A)')
+		println('      v test folder/ : run all v tests in the given folder.')
+		println('      v -stats test folder/ : the same, but print more stats.')
+		println('   B)')
+		println('      v test file_test.v : run test functions in a given test file.')
+		println('      v -stats test file_test.v : as above, but with more stats.')
+		println('   NB: you can also give many and mixed folder/ file_test.v arguments after test.')
+		println('')
+		return
+	}
+
+	args_to_executable := args[1..]
+	args_before := cmdline.before(args_to_executable, ['test'])
+	args_after := cmdline.after(args_to_executable, ['test'])
+
+	if args_after.join(' ') == 'v' {
+		eprintln('`v test v` has been deprecated.')
+		eprintln('Use `v test-compiler` instead.')
+		exit(1)
+	}
+
+	mut ts := testing.new_test_session(args_before.join(' '))
+	for targ in args_after {
+		if os.exists(targ) && targ.ends_with('_test.v') {
+			ts.files << targ
+			continue
+		}
+		if os.is_dir(targ) {
+			// Fetch all tests from the directory
+			ts.files << os.walk_ext( targ.trim_right(os.path_separator), '_test.v')
+			continue
+		}
+		println('Unrecognized test file $targ .')
+	}
+
+	testing.header('Testing...')
+	ts.test()
+
+	println( ts.benchmark.total_message('running V _test.v files') )
+	if ts.failed {
+		exit(1)
+	}
+}
+