From 2b79753438bd244cd24137bf79151270dbaf106d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Do=C4=9Fan=20Can=20Bak=C4=B1r?=
 <dogancanbakir@protonmail.com>
Date: Tue, 25 Jun 2024 12:14:21 +0300
Subject: [PATCH 1/2] add `stringsutil.ContainsAllI` func

---
 strings/stringsutil.go      | 10 ++++++++++
 strings/stringsutil_test.go | 17 +++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/strings/stringsutil.go b/strings/stringsutil.go
index 4b71999..109d6ca 100644
--- a/strings/stringsutil.go
+++ b/strings/stringsutil.go
@@ -312,3 +312,13 @@ func ContainsAll(s string, ss ...string) bool {
 	}
 	return true
 }
+
+// ContainsAllI returns true if s contains all specified substrings (case-insensitive).
+func ContainsAllI(s string, ss ...string) bool {
+	for _, sub := range ss {
+		if !strings.Contains(strings.ToLower(s), strings.ToLower(sub)) {
+			return false
+		}
+	}
+	return true
+}
diff --git a/strings/stringsutil_test.go b/strings/stringsutil_test.go
index c563fc0..48a1756 100644
--- a/strings/stringsutil_test.go
+++ b/strings/stringsutil_test.go
@@ -407,3 +407,20 @@ func TestContainsAll(t *testing.T) {
 		require.Equal(t, test.result, res)
 	}
 }
+
+func TestContainsAllI(t *testing.T) {
+	tests := []struct {
+		s      string
+		ss     []string
+		result bool
+	}{
+		{"abcdefg", []string{"A", "b"}, true},
+		{"abcdefg", []string{"A", "z"}, false},
+		{"abcdefg", []string{"A", "b", "c", "d", "e", "f", "g"}, true},
+		{"abcdefg", []string{"A", "b", "c", "d", "e", "f", "g", "z"}, false},
+	}
+	for _, test := range tests {
+		res := ContainsAllI(test.s, test.ss...)
+		require.Equal(t, test.result, res)
+	}
+}

From ba95de83edef2b71d61665421e16587363f5baa0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Do=C4=9Fan=20Can=20Bak=C4=B1r?=
 <dogancanbakir@protonmail.com>
Date: Tue, 25 Jun 2024 13:09:29 +0300
Subject: [PATCH 2/2] minor

---
 strings/stringsutil.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/strings/stringsutil.go b/strings/stringsutil.go
index 109d6ca..d7cf397 100644
--- a/strings/stringsutil.go
+++ b/strings/stringsutil.go
@@ -315,8 +315,9 @@ func ContainsAll(s string, ss ...string) bool {
 
 // ContainsAllI returns true if s contains all specified substrings (case-insensitive).
 func ContainsAllI(s string, ss ...string) bool {
+	lowerS := strings.ToLower(s)
 	for _, sub := range ss {
-		if !strings.Contains(strings.ToLower(s), strings.ToLower(sub)) {
+		if !strings.Contains(lowerS, strings.ToLower(sub)) {
 			return false
 		}
 	}