add stringsutil.ContainsAllI func

Author: dogancanbakir

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
+}

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)
+	}
+}