func TestInvalidJSON(t *testing.T) {
cases := []struct {
value string
want string
}{
{`"not-a-date"`, `Date.ParseISO: cannot parse not-a-date`},
{`2015-08-15"`, `Date.UnmarshalJSON: missing double quotes (2015-08-15")`},
{`"2015-08-15`, `Date.UnmarshalJSON: missing double quotes ("2015-08-15)`},
{`"215-08-15"`, `Date.ParseISO: cannot parse 215-08-15`},
}
for _, c := range cases {
var d date.Date
err := d.UnmarshalJSON([]byte(c.value))
if err == nil || err.Error() != c.want {
t.Errorf("InvalidJSON(%v) == %v, want %v", c.value, err, c.want)
}
}
}
