Add test for RandDate func

1 files changed, 18 insertions, 0 deletions

diff --git a/apod/randomdate_test.go b/apod/randomdate_test.go
new file mode 100644
index 0000000..8ac82bc
--- /dev/null
+++ b/apod/randomdate_test.go
@@ -0,0 +1,18 @@
+package apod
+
+import (
+	"regexp"
+	"testing"
+)
+
+// TestRandDate tests the RandDate func. We're not actually testing
+// much, there are many cases and we really can't test for all, we'll
+// have to run this test a lot of times for that. Even after that it
+// doesn't guarantee anything because our test itself is flawed.
+func TestRandDate(t *testing.T) {
+	date := RandDate()
+	re := regexp.MustCompile("((19|20)\\d\\d)-(0?[1-9]|1[012])-(0?[1-9]|[12][0-9]|3[01])")
+	if !re.MatchString(date) {
+		t.Errorf("Date format is incorrect, got %s, want YYYY-MM-DD.", date)
+	}
+}