--- /dev/null
+package pkg
+
+import (
+ "bytes"
+ "strings"
+)
+
+func fn() {
+ _ = strings.IndexRune("", 'x') > -1 // want ` strings\.ContainsRune`
+ _ = strings.IndexRune("", 'x') >= 0 // want ` strings\.ContainsRune`
+ _ = strings.IndexRune("", 'x') > 0
+ _ = strings.IndexRune("", 'x') >= -1
+ _ = strings.IndexRune("", 'x') != -1 // want ` strings\.ContainsRune`
+ _ = strings.IndexRune("", 'x') == -1 // want `!strings\.ContainsRune`
+ _ = strings.IndexRune("", 'x') != 0
+ _ = strings.IndexRune("", 'x') < 0 // want `!strings\.ContainsRune`
+
+ _ = strings.IndexAny("", "") > -1 // want ` strings\.ContainsAny`
+ _ = strings.IndexAny("", "") >= 0 // want ` strings\.ContainsAny`
+ _ = strings.IndexAny("", "") > 0
+ _ = strings.IndexAny("", "") >= -1
+ _ = strings.IndexAny("", "") != -1 // want ` strings\.ContainsAny`
+ _ = strings.IndexAny("", "") == -1 // want `!strings\.ContainsAny`
+ _ = strings.IndexAny("", "") != 0
+ _ = strings.IndexAny("", "") < 0 // want `!strings\.ContainsAny`
+
+ _ = strings.Index("", "") > -1 // want ` strings\.Contains`
+ _ = strings.Index("", "") >= 0 // want ` strings\.Contains`
+ _ = strings.Index("", "") > 0
+ _ = strings.Index("", "") >= -1
+ _ = strings.Index("", "") != -1 // want ` strings\.Contains`
+ _ = strings.Index("", "") == -1 // want `!strings\.Contains`
+ _ = strings.Index("", "") != 0
+ _ = strings.Index("", "") < 0 // want `!strings\.Contains`
+
+ _ = bytes.IndexRune(nil, 'x') > -1 // want ` bytes\.ContainsRune`
+ _ = bytes.IndexAny(nil, "") > -1 // want ` bytes\.ContainsAny`
+ _ = bytes.Index(nil, nil) > -1 // want ` bytes\.Contains`
+}