Merge pull request #53 from ijt/issue/52/december-40

Issue/52/december 40

Author: ijt

v2/parse.go

@@ -340,6 +340,14 @@ func parseDateWord(d *date, w string) (string, bool) {
 }
 
 func parseDayOfMonth(w string) (int, bool) {
+	dom, ok := parseDayOfMonthNoCheck(w)
+	if !ok || !okDayOfMonth(dom) {
+		return 0, false
+	}
+	return dom, ok
+}
+
+func parseDayOfMonthNoCheck(w string) (int, bool) {
 	i, ok := strToInt[w]
 	if ok {
 		return i, true
@@ -355,6 +363,10 @@ func parseDayOfMonth(w string) (int, bool) {
 	return 0, false
 }
 
+func okDayOfMonth(dom int) bool {
+	return 1 <= dom && dom <= 31
+}
+
 func inferRange(d date, now time.Time, dir Direction, src string) (Range, bool) {
 	if d.year == 0 && d.month == 0 {
 		return Range{}, false

v2/parse_test.go

@@ -235,6 +235,16 @@ func Test_parseImplicitRange(t *testing.T) {
 			wantR:      truncateDay(time.Date(2023, 3, 4, 0, 0, 0, 0, time.UTC)),
 			wantParsed: "mar 4th",
 		},
+		{
+			name: "december 40",
+			args: args{
+				s:   "december 40",
+				now: time.Date(2022, 1, 1, 0, 0, 0, 0, time.UTC),
+				dir: Future,
+			},
+			wantR:      truncateMonth(time.Date(2022, 12, 1, 0, 0, 0, 0, time.UTC)),
+			wantParsed: "december",
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {