Handle more date formats

reader/date/parser_test.go

@@ -0,0 +1,56 @@
+// Copyright 2017 Frédéric Guillot. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package date
+
+import "testing"
+
+func TestParseEmptyDate(t *testing.T) {
+	if _, err := Parse("  "); err == nil {
+		t.Fatalf(`Empty dates should return an error`)
+	}
+}
+
+func TestParseInvalidDate(t *testing.T) {
+	if _, err := Parse("invalid"); err == nil {
+		t.Fatalf(`Invalid dates should return an error`)
+	}
+}
+
+func TestParseAtomDate(t *testing.T) {
+	date, err := Parse("2017-12-22T22:09:49+00:00")
+	if err != nil {
+		t.Fatalf(`Atom dates should be parsed correctly`)
+	}
+
+	if date.Unix() != 1513980589 {
+		t.Fatal(`Invalid date parsed`)
+	}
+}
+
+func TestParseRSSDate(t *testing.T) {
+	date, err := Parse("Tue, 03 Jun 2003 09:39:21 GMT")
+	if err != nil {
+		t.Fatalf(`RSS dates should be parsed correctly`)
+	}
+
+	if date.Unix() != 1054633161 {
+		t.Fatal(`Invalid date parsed`)
+	}
+}
+
+func TestParseWeirdDateFormat(t *testing.T) {
+	dates := []string{
+		"Sun, 17 Dec 2017 1:55 PM EST",
+		"9 Dec 2016 12:00 GMT",
+		"Friday, December 22, 2017 - 3:09pm",
+		"Friday, December 8, 2017 - 3:07pm",
+	}
+
+	for _, date := range dates {
+		if _, err := Parse(date); err != nil {
+			t.Fatalf(`Unable to parse date: "%s"`, date)
+		}
+	}
+}