1 files changed, 47 insertions, 0 deletions
diff --git a/modules/timeutil/datetime_test.go b/modules/timeutil/datetime_test.go
new file mode 100644
index 00000000..ac2ce35b
--- /dev/null
+++ b/modules/timeutil/datetime_test.go
@@ -0,0 +1,47 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package timeutil
+
+import (
+	"testing"
+	"time"
+
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/test"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDateTime(t *testing.T) {
+	testTz, _ := time.LoadLocation("America/New_York")
+	defer test.MockVariableValue(&setting.DefaultUILocation, testTz)()
+
+	refTimeStr := "2018-01-01T00:00:00Z"
+	refDateStr := "2018-01-01"
+	refTime, _ := time.Parse(time.RFC3339, refTimeStr)
+	refTimeStamp := TimeStamp(refTime.Unix())
+
+	assert.EqualValues(t, "-", DateTime("short", nil))
+	assert.EqualValues(t, "-", DateTime("short", 0))
+	assert.EqualValues(t, "-", DateTime("short", time.Time{}))
+	assert.EqualValues(t, "-", DateTime("short", TimeStamp(0)))
+
+	actual := DateTime("short", "invalid")
+	assert.EqualValues(t, `<absolute-date weekday="" year="numeric" month="short" day="numeric" date="invalid">invalid</absolute-date>`, actual)
+
+	actual = DateTime("short", refTimeStr)
+	assert.EqualValues(t, `<absolute-date weekday="" year="numeric" month="short" day="numeric" date="2018-01-01T00:00:00Z">2018-01-01T00:00:00Z</absolute-date>`, actual)
+
+	actual = DateTime("short", refTime)
+	assert.EqualValues(t, `<absolute-date weekday="" year="numeric" month="short" day="numeric" date="2018-01-01T00:00:00Z">2018-01-01</absolute-date>`, actual)
+
+	actual = DateTime("short", refDateStr)
+	assert.EqualValues(t, `<absolute-date weekday="" year="numeric" month="short" day="numeric" date="2018-01-01">2018-01-01</absolute-date>`, actual)
+
+	actual = DateTime("short", refTimeStamp)
+	assert.EqualValues(t, `<absolute-date weekday="" year="numeric" month="short" day="numeric" date="2017-12-31T19:00:00-05:00">2017-12-31</absolute-date>`, actual)
+
+	actual = DateTime("full", refTimeStamp)
+	assert.EqualValues(t, `<relative-time weekday="" year="numeric" format="datetime" month="short" day="numeric" hour="numeric" minute="numeric" second="numeric" data-tooltip-content data-tooltip-interactive="true" datetime="2017-12-31T19:00:00-05:00">2017-12-31 19:00:00 -05:00</relative-time>`, actual)
+}