1 files changed, 74 insertions, 0 deletions
diff --git a/gopls/internal/lsp/analysis/unusedvariable/testdata/src/assign/a.go b/gopls/internal/lsp/analysis/unusedvariable/testdata/src/assign/a.go
new file mode 100644
index 000000000..aa9f46e5b
--- /dev/null
+++ b/gopls/internal/lsp/analysis/unusedvariable/testdata/src/assign/a.go
@@ -0,0 +1,74 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package a
+
+import (
+	"fmt"
+	"os"
+)
+
+type A struct {
+	b int
+}
+
+func singleAssignment() {
+	v := "s" // want `v declared (and|but) not used`
+
+	s := []int{ // want `s declared (and|but) not used`
+		1,
+		2,
+	}
+
+	a := func(s string) bool { // want `a declared (and|but) not used`
+		return false
+	}
+
+	if 1 == 1 {
+		s := "v" // want `s declared (and|but) not used`
+	}
+
+	panic("I should survive")
+}
+
+func noOtherStmtsInBlock() {
+	v := "s" // want `v declared (and|but) not used`
+}
+
+func partOfMultiAssignment() {
+	f, err := os.Open("file") // want `f declared (and|but) not used`
+	panic(err)
+}
+
+func sideEffects(cBool chan bool, cInt chan int) {
+	b := <-c            // want `b declared (and|but) not used`
+	s := fmt.Sprint("") // want `s declared (and|but) not used`
+	a := A{             // want `a declared (and|but) not used`
+		b: func() int {
+			return 1
+		}(),
+	}
+	c := A{<-cInt}          // want `c declared (and|but) not used`
+	d := fInt() + <-cInt    // want `d declared (and|but) not used`
+	e := fBool() && <-cBool // want `e declared (and|but) not used`
+	f := map[int]int{       // want `f declared (and|but) not used`
+		fInt(): <-cInt,
+	}
+	g := []int{<-cInt}       // want `g declared (and|but) not used`
+	h := func(s string) {}   // want `h declared (and|but) not used`
+	i := func(s string) {}() // want `i declared (and|but) not used`
+}
+
+func commentAbove() {
+	// v is a variable
+	v := "s" // want `v declared (and|but) not used`
+}
+
+func fBool() bool {
+	return true
+}
+
+func fInt() int {
+	return 1
+}