Add check.IsDir

check/check.go

@@ -1,6 +1,9 @@
 package check
 
-import "reflect"
+import (
+	"os"
+	"reflect"
+)
 
 // IsNil is a shortcut for reflect.ValueOf(foo).IsNil() and should only
 // be used when foo == nil is in question, such as whenever the value of
@@ -8,3 +11,13 @@ import "reflect"
 // this check instead just to be sure to avoid surprise (and extremely
 // odd) logic errors. Nil is not "nil" in Go.
 func IsNil(i interface{}) bool { return reflect.ValueOf(i).IsNil() }
+
+// IsDir returns true if the path points to a directory. False is
+// returned in both cases where there is an error or the path is not
+// a directory.
+func IsDir(path string) bool {
+	if s, _ := os.Stat(path); s != nil {
+		return s.IsDir()
+	}
+	return false
+}

check/check_test.go

@@ -21,3 +21,11 @@ func ExampleIsNil() {
 	// true
 	// true
 }
+
+func ExampleIsDir() {
+	fmt.Println(check.IsDir("testdata"))
+	fmt.Println(check.IsDir("nothing"))
+	// Output:
+	// true
+	// false
+}