From 2a2a20dcb8156b2a8925f5e22b9d8ded1a651940 Mon Sep 17 00:00:00 2001
From: Cameron Moore <moorereason@gmail.com>
Date: Thu, 19 Mar 2015 11:32:10 -0500
Subject: [PATCH] Add tests for ExtractParameter

---
 helpers/helpers_test.go | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 helpers/helpers_test.go

diff --git a/helpers/helpers_test.go b/helpers/helpers_test.go
new file mode 100644
index 0000000..af25530
--- /dev/null
+++ b/helpers/helpers_test.go
@@ -0,0 +1,28 @@
+package helpers
+
+import "testing"
+
+var extractParameterTests = []struct {
+	s      string
+	params map[string]interface{}
+	value  string
+	ok     bool
+}{
+	{"a", map[string]interface{}{"a": "z"}, "z", true},
+	{"a.b", map[string]interface{}{"a": map[string]interface{}{"b": "z"}}, "z", true},
+	{"a.b.c", map[string]interface{}{"a": map[string]interface{}{"b": map[string]interface{}{"c": "z"}}}, "z", true},
+	{"a.1.b", map[string]interface{}{"a": []interface{}{map[string]interface{}{"b": "y"}, map[string]interface{}{"b": "z"}}}, "z", true},
+	// failures
+	{"a.X", map[string]interface{}{"a": map[string]interface{}{"b": "z"}}, "", false},
+	{"a.500.b", map[string]interface{}{"a": map[string]interface{}{"b": "z"}}, "", false},
+	{"a.501.b", map[string]interface{}{"a": []interface{}{map[string]interface{}{"b": "y"}, map[string]interface{}{"b": "z"}}}, "", false},
+}
+
+func TestExtractParameter(t *testing.T) {
+	for _, tt := range extractParameterTests {
+		s, ok := ExtractParameter(tt.s, tt.params)
+		if ok != tt.ok || s != tt.value {
+			t.Errorf("failed to extract parameter %q:\nexpected {value:%#v, ok:%#v},\ngot {value:%#v, ok:%#v}", tt.s, tt.value, tt.ok, s, ok)
+		}
+	}
+}