diff --git a/http_download_test.sh b/http_download_test.sh
new file mode 100644
index 0000000..c3baeef
--- /dev/null
+++ b/http_download_test.sh
@@ -0,0 +1,19 @@
+. ./is_command.sh
+. ./http_download.sh
+. ./assert.sh
+
+# test normal 200
+test1() {
+  http_download /dev/null https://raw.githubusercontent.com/client9/shlib/master/README.md
+  assertEquals "$?" "0" "return != 0 on valid URL"
+}
+
+# test 404, missing
+test2() {
+  http_download /dev/null https://raw.githubusercontent.com/client9/shlib/master/does_not_exist 
+  assertNotEquals "$?" "0" "expected return to be non-zero on 404"
+}
+
+test1
+test2
+