From 148bbc8b2ac40fc62d926cd544a7217b008f3bf8 Mon Sep 17 00:00:00 2001
From: Andrey Smirnov <Smirnov.Andrey@gmail.com>
Date: Wed, 18 Dec 2013 12:08:35 +0400
Subject: [PATCH] Slices & maps comparision.

---
 utils/list.go      | 34 +++++++++++++++++++++++++++++++++-
 utils/list_test.go | 21 +++++++++++++++++++++
 2 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/utils/list.go b/utils/list.go
index e6a259a6..5907350b 100644
--- a/utils/list.go
+++ b/utils/list.go
@@ -6,7 +6,7 @@ import (
 
 // StringsIsSubset checks that subset is strict subset of full, and returns
 // error formatted with errorFmt otherwise
-func StringsIsSubset(subset []string, full []string, errorFmt string) error {
+func StringsIsSubset(subset, full []string, errorFmt string) error {
 	for _, checked := range subset {
 		found := false
 		for _, s := range full {
@@ -21,3 +21,35 @@ func StringsIsSubset(subset []string, full []string, errorFmt string) error {
 	}
 	return nil
 }
+
+// StrSlicesEqual compares two slices for equality
+func StrSlicesEqual(s1, s2 []string) bool {
+	if len(s1) != len(s2) {
+		return false
+	}
+
+	for i, s := range s1 {
+		if s != s2[i] {
+			return false
+		}
+	}
+
+	return true
+}
+
+// StrMapsEqual compares two map[string]string
+func StrMapsEqual(m1, m2 map[string]string) bool {
+	if len(m1) != len(m2) {
+		return false
+	}
+
+	for k, v := range m1 {
+		v2, ok := m2[k]
+		if !ok || v != v2 {
+			return false
+		}
+	}
+
+	return true
+
+}
diff --git a/utils/list_test.go b/utils/list_test.go
index 0fe335b9..01817054 100644
--- a/utils/list_test.go
+++ b/utils/list_test.go
@@ -16,3 +16,24 @@ func (s *ListSuite) TestStringsIsSubset(c *C) {
 	err = StringsIsSubset([]string{"b", "a"}, []string{"b", "c"}, "[%s]")
 	c.Assert(err, ErrorMatches, "\\[a\\]")
 }
+
+func (s *ListSuite) TestStrSlicesEqual(c *C) {
+	c.Check(StrSlicesEqual(nil, nil), Equals, true)
+	c.Check(StrSlicesEqual(nil, []string{}), Equals, true)
+	c.Check(StrSlicesEqual([]string{}, nil), Equals, true)
+	c.Check(StrSlicesEqual([]string{"a", "b"}, []string{"a", "b"}), Equals, true)
+
+	c.Check(StrSlicesEqual(nil, []string{"a"}), Equals, false)
+	c.Check(StrSlicesEqual([]string{"a", "c"}, []string{"a", "b"}), Equals, false)
+}
+
+func (s *ListSuite) TestStrMapsEqual(c *C) {
+	c.Check(StrMapsEqual(map[string]string{}, nil), Equals, true)
+	c.Check(StrMapsEqual(nil, map[string]string{}), Equals, true)
+	c.Check(StrMapsEqual(nil, nil), Equals, true)
+	c.Check(StrMapsEqual(map[string]string{"a": "1", "b": "2"}, map[string]string{"a": "1", "b": "2"}), Equals, true)
+
+	c.Check(StrMapsEqual(map[string]string{"a": "1", "b": "2"}, map[string]string{"a": "1", "b": "3"}), Equals, false)
+	c.Check(StrMapsEqual(map[string]string{"a": "1", "b": "2"}, map[string]string{"a": "1", "c": "2"}), Equals, false)
+	c.Check(StrMapsEqual(map[string]string{"a": "1", "b": "2"}, map[string]string{"a": "1"}), Equals, false)
+}