Increased test coverage of httputils to 70 %

Signed-off-by: Kristina Zabunova <triara.xiii@gmail.com>
(cherry picked from commit d71817464e859cd323d6cdaf4dec5a9dd530f57e)

httputils/mimetype_test.go

@@ -0,0 +1,14 @@
+package httputils
+
+import (
+	"testing"
+)
+
+func TestDetectContentType(t *testing.T) {
+	input := []byte("That is just a plain text")
+
+	contentType, _, err := DetectContentType(input)
+	if err != nil || contentType != "text/plain" {
+		t.Errorf("TestDetectContentType failed")
+	}
+}