add TestGetExcludePatterns

Author: zhangyunhao116

pkg/config/config_test.go

@@ -0,0 +1,36 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetExcludePatterns(t *testing.T) {
+	assert.Equal(t, GetExcludePatterns(nil), DefaultExcludePatterns)
+
+	include := make([]string, 2)
+	include[0], include[1] = DefaultExcludePatterns[0].ID, DefaultExcludePatterns[1].ID
+
+	exclude := GetExcludePatterns(include)
+	assert.Equal(t, len(exclude), len(DefaultExcludePatterns)-len(include))
+
+	for _, p := range exclude {
+		// Not in include.
+		for _, i := range include {
+			if i == p.ID {
+				t.Fatalf("%s can't appear inside include.", p.ID)
+			}
+		}
+		// Must in DefaultExcludePatterns.
+		var inDefaultExc bool
+		for _, i := range DefaultExcludePatterns {
+			if i == p {
+				inDefaultExc = true
+			}
+		}
+		if !inDefaultExc {
+			t.Fatalf("%s must appear inside DefaultExcludePatterns.", p.ID)
+		}
+	}
+}