diff --git a/config/setup/ext_test.go b/config/setup/ext_test.go
index 30cd12a7b..2054b56ae 100644
--- a/config/setup/ext_test.go
+++ b/config/setup/ext_test.go
@@ -2,7 +2,7 @@ package setup
 
 import (
 	"testing"
-	
+
 	"github.com/mholt/caddy/middleware/extensions"
 )
 
@@ -21,11 +21,11 @@ func TestExt(t *testing.T) {
 
 	handler := mid(emptyNext)
 	myHandler, ok := handler.(extensions.Ext)
-	
+
 	if !ok {
 		t.Fatalf("Expected handler to be type Ext, got: %#v", handler)
 	}
-	
+
 	if myHandler.Extensions[0] != ".html" {
 		t.Errorf("Expected .html in the list of Extensions")
 	}
@@ -38,6 +38,39 @@ func TestExt(t *testing.T) {
 	if !sameNext(myHandler.Next, emptyNext) {
 		t.Error("'Next' field of handler was not set properly")
 	}
-	
-	
+
+}
+
+func TestExtParse(t *testing.T) {
+	tests := []struct {
+		inputExts    string
+		shouldErr    bool
+		expectedExts []string
+	}{
+		{`ext .html .htm .php`, false, []string{".html", ".htm", ".php"}},
+		{`ext .php .html .xml`, false, []string{".php", ".html", ".xml"}},
+		{`ext .txt .php .xml`, false, []string{".txt", ".php", ".xml"}},
+	}
+	for i, test := range tests {
+		c := newTestController(test.inputExts)
+		actualExts, err := extParse(c)
+
+		if err == nil && test.shouldErr {
+			t.Errorf("Test %d didn't error, but it should have", i)
+		} else if err != nil && !test.shouldErr {
+			t.Errorf("Test %d errored, but it shouldn't have; got '%v'", i, err)
+		}
+
+		if len(actualExts) != len(test.expectedExts) {
+			t.Fatalf("Test %d expected %d rules, but got %d",
+				i, len(test.expectedExts), len(actualExts))
+		}
+		for j, actualExt := range actualExts {
+			if actualExt != test.expectedExts[j] {
+				t.Fatalf("Test %d expected %dth extension to be  %s  , but got %s",
+					i, j, test.expectedExts[j], actualExt)
+			}
+		}
+	}
+
 }