From 60723c070c4dfb8dd7709b0e5ac536809bad6518 Mon Sep 17 00:00:00 2001
From: Jim <jlambert@hashicorp.com>
Date: Mon, 3 Apr 2023 14:20:07 -0400
Subject: [PATCH] feature (is_nil): support checking func for nil (#3142)

---
 internal/util/is_nil.go      | 2 +-
 internal/util/is_nil_test.go | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/internal/util/is_nil.go b/internal/util/is_nil.go
index b2e3841325..b239a3a343 100644
--- a/internal/util/is_nil.go
+++ b/internal/util/is_nil.go
@@ -11,7 +11,7 @@ func IsNil(i any) bool {
 		return true
 	}
 	switch reflect.TypeOf(i).Kind() {
-	case reflect.Ptr, reflect.Map, reflect.Chan, reflect.Slice:
+	case reflect.Ptr, reflect.Map, reflect.Chan, reflect.Slice, reflect.Func:
 		return reflect.ValueOf(i).IsNil()
 	}
 	return false
diff --git a/internal/util/is_nil_test.go b/internal/util/is_nil_test.go
index a373693ec3..c96947d4d4 100644
--- a/internal/util/is_nil_test.go
+++ b/internal/util/is_nil_test.go
@@ -19,6 +19,7 @@ func Test_IsNil(t *testing.T) {
 	var testArrayNilPtr *[1]string
 	var testChanNilPtr *chan string
 	var testSliceNilPtr *[]string
+	var testFuncNil func()
 
 	var testChanString chan string
 
@@ -35,6 +36,7 @@ func Test_IsNil(t *testing.T) {
 		{i: &testChanString, want: false},
 		{i: "string", want: false},
 		{i: []string{}, want: false},
+		{i: func() {}, want: false},
 		{i: nil, want: true},
 		{i: testErrNilPtr, want: true},
 		{i: testMapNilPtr, want: true},
@@ -42,6 +44,7 @@ func Test_IsNil(t *testing.T) {
 		{i: testChanNilPtr, want: true},
 		{i: testChanString, want: true},
 		{i: testSliceNilPtr, want: true},
+		{i: testFuncNil, want: true},
 	}
 
 	for i, tc := range tc {