From 05e37ee20fe3b23726e63ebb881afecd722a8395 Mon Sep 17 00:00:00 2001
From: Kevin Wan <wanjunfeng@gmail.com>
Date: Mon, 5 Apr 2021 22:59:24 +0800
Subject: [PATCH] refactor - remove ShrinkDeadline, it's the same as
 context.WithTimeout (#599)

---
 core/contextx/deadline.go      | 12 ------------
 core/contextx/deadline_test.go | 31 -------------------------------
 2 files changed, 43 deletions(-)
 delete mode 100644 core/contextx/deadline.go
 delete mode 100644 core/contextx/deadline_test.go

diff --git a/core/contextx/deadline.go b/core/contextx/deadline.go
deleted file mode 100644
index 0a3c3fae..00000000
--- a/core/contextx/deadline.go
+++ /dev/null
@@ -1,12 +0,0 @@
-package contextx
-
-import (
-	"context"
-	"time"
-)
-
-// ShrinkDeadline returns a new Context with proper deadline base on the given ctx and timeout.
-// And returns a cancel function as well.
-func ShrinkDeadline(ctx context.Context, timeout time.Duration) (context.Context, func()) {
-	return context.WithTimeout(ctx, timeout)
-}
diff --git a/core/contextx/deadline_test.go b/core/contextx/deadline_test.go
deleted file mode 100644
index d33adfba..00000000
--- a/core/contextx/deadline_test.go
+++ /dev/null
@@ -1,31 +0,0 @@
-package contextx
-
-import (
-	"context"
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestShrinkDeadlineLess(t *testing.T) {
-	deadline := time.Now().Add(time.Second)
-	ctx, cancel := context.WithDeadline(context.Background(), deadline)
-	defer cancel()
-	ctx, cancel = ShrinkDeadline(ctx, time.Minute)
-	defer cancel()
-	dl, ok := ctx.Deadline()
-	assert.True(t, ok)
-	assert.Equal(t, deadline, dl)
-}
-
-func TestShrinkDeadlineMore(t *testing.T) {
-	deadline := time.Now().Add(time.Minute)
-	ctx, cancel := context.WithDeadline(context.Background(), deadline)
-	defer cancel()
-	ctx, cancel = ShrinkDeadline(ctx, time.Second)
-	defer cancel()
-	dl, ok := ctx.Deadline()
-	assert.True(t, ok)
-	assert.True(t, dl.Before(deadline))
-}