From 5e6f10c9b857f4e9027f48df0f4fa74f4b3f189d Mon Sep 17 00:00:00 2001
From: yyforyongyu <yy2452@columbia.edu>
Date: Thu, 12 Jan 2023 21:16:18 +0800
Subject: [PATCH] lnmock: add new package `lnmock` to host mocks

This commit introduces a new package to host mocked objects that can be
used for all the unit tests.
---
 .golangci.yml   |  7 +++++++
 lnmock/clock.go | 30 ++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 lnmock/clock.go

diff --git a/.golangci.yml b/.golangci.yml
index 2ab612f58..7b97fee00 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -238,3 +238,10 @@ issues:
         - govet
         # itest case can be very long so we disable long function check.
         - funlen
+
+    - path: lnmock/*
+      linters:
+        # forcetypeassert is skipped for the mock because the test would fail
+        # if the returned value doesn't match the type, so there's no need to
+        # check the convert.
+        - forcetypeassert
diff --git a/lnmock/clock.go b/lnmock/clock.go
new file mode 100644
index 000000000..bd00c42c8
--- /dev/null
+++ b/lnmock/clock.go
@@ -0,0 +1,30 @@
+// NOTE: forcetypeassert is skipped for the mock because the test would fail if
+// the returned value doesn't match the type.
+package lnmock
+
+import (
+	"time"
+
+	"github.com/lightningnetwork/lnd/clock"
+	"github.com/stretchr/testify/mock"
+)
+
+// MockClock implements the `clock.Clock` interface.
+type MockClock struct {
+	mock.Mock
+}
+
+// Compile time assertion that MockClock implements clock.Clock.
+var _ clock.Clock = (*MockClock)(nil)
+
+func (m *MockClock) Now() time.Time {
+	args := m.Called()
+
+	return args.Get(0).(time.Time)
+}
+
+func (m *MockClock) TickAfter(d time.Duration) <-chan time.Time {
+	args := m.Called(d)
+
+	return args.Get(0).(chan time.Time)
+}