Added the 'new' command, which creates a new minecraft server instance

util/env.go

@@ -0,0 +1,23 @@
+package util
+
+import (
+  "path/filepath"
+  "os/user"
+  "strings"
+)
+
+func ResolveTilde(path string) string {
+  usr, _ := user.Current()
+  dir := usr.HomeDir
+
+  if path == "~" {
+    // In case of "~", which won't be caught by the "else if"
+    path = dir
+  } else if strings.HasPrefix(path, "~/") {
+    // Use strings.HasPrefix so we don't match paths like
+    // "/something/~/something/"
+    path = filepath.Join(dir, path[2:])
+  }
+
+  return path
+}

util/env_test.go

@@ -0,0 +1,29 @@
+package util
+
+import (
+	"testing"
+	"github.com/stretchr/testify/assert"
+  "github.com/stretchr/testify/suite"
+)
+
+// define our test suite struct
+type EnvTestSuite struct {
+	suite.Suite
+}
+
+// the tilde should expand to user's home directory
+func (s *EnvTestSuite) TestResolveTilde() {
+	resolvedPath := ResolveTilde("~")
+	assert.NotEqual(s.T(), resolvedPath, "~")
+}
+
+// ensure the tilde + relative path gets expanded fully
+func (s *EnvTestSuite) TestResolveTildePath() {
+	resolvedPath := ResolveTilde("~/test")
+	assert.NotEqual(s.T(), resolvedPath, "~/test")
+}
+
+// this is needed to run the test suite
+func TestEnvTestSuite(t *testing.T) {
+	suite.Run(t, new(EnvTestSuite))
+}