From 26b48442569102226baba1d9b4a83aaee3d06611 Mon Sep 17 00:00:00 2001
From: fangguizhen <1297394526@qq.com>
Date: Mon, 17 Oct 2022 18:32:36 +0000
Subject: [PATCH] errors: add test for Join

Change-Id: I77c61211a488c66f1d445c0bf01e35aaf4f83565
GitHub-Last-Rev: c411a56a3b5215e6dd093be7069affb176b48dfd
GitHub-Pull-Request: golang/go#56279
Reviewed-on: https://go-review.googlesource.com/c/go/+/443316
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
---
 src/errors/join_test.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/errors/join_test.go b/src/errors/join_test.go
index ee69314529..4828dc4d75 100644
--- a/src/errors/join_test.go
+++ b/src/errors/join_test.go
@@ -47,3 +47,26 @@ func TestJoin(t *testing.T) {
 		}
 	}
 }
+
+func TestJoinErrorMethod(t *testing.T) {
+	err1 := errors.New("err1")
+	err2 := errors.New("err2")
+	for _, test := range []struct {
+		errs []error
+		want string
+	}{{
+		errs: []error{err1},
+		want: "err1",
+	}, {
+		errs: []error{err1, err2},
+		want: "err1\nerr2",
+	}, {
+		errs: []error{err1, nil, err2},
+		want: "err1\nerr2",
+	}} {
+		got := errors.Join(test.errs...).Error()
+		if got != test.want {
+			t.Errorf("Join(%v).Error() = %q; want %q", test.errs, got, test.want)
+		}
+	}
+}
-- 
2.50.0