Merge pull request #6 from jf-tech/files

Add FileExists and DirExists to ios package

Author: jf-tech

ios/files.go

@@ -0,0 +1,23 @@
+package ios
+
+import (
+	"os"
+)
+
+// FileExists checks if a file exists or not.
+func FileExists(file string) bool {
+	fi, err := os.Stat(file)
+	if os.IsNotExist(err) {
+		return false
+	}
+	return !fi.IsDir()
+}
+
+// DirExists checks if a directory exists or not.
+func DirExists(dir string) bool {
+	fi, err := os.Stat(dir)
+	if os.IsNotExist(err) {
+		return false
+	}
+	return fi.IsDir()
+}

ios/files_test.go

@@ -0,0 +1,33 @@
+package ios
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/jf-tech/go-corelib/testlib"
+)
+
+func TestFileExists(t *testing.T) {
+	// non existing case.
+	assert.False(t, FileExists("non-existing"))
+	tmp := testlib.CreateTempFileWithContent(t, "", "", "test")
+	defer os.Remove(tmp.Name())
+	// file existing case.
+	assert.True(t, FileExists(tmp.Name()))
+	// existing but not a file case.
+	assert.False(t, FileExists(filepath.Dir(tmp.Name())))
+}
+
+func TestDirExists(t *testing.T) {
+	// non existing case.
+	assert.False(t, DirExists("non-existing"))
+	tmp := testlib.CreateTempFileWithContent(t, "", "", "test")
+	defer os.Remove(tmp.Name())
+	// dir existing case.
+	assert.True(t, DirExists(filepath.Dir(tmp.Name())))
+	// existing but not a dir case.
+	assert.False(t, DirExists(tmp.Name()))
+}