Add unit tests for lib/time.

tests/README.md

@@ -15,3 +15,10 @@
 * `mean`: 100%
 * `integer`: 100%
 * `icomplex`: 100%
+
+### `time`
+
+* `date`: 100% 
+* `elapsed`: 100%  
+* `month`: 100%  
+* `year`: 100%

tests/time/date.bats

@@ -0,0 +1,9 @@
+#!/usr/bin/env bats
+
+source bashlet time/date
+
+@test "time/date: get a random date" {
+  result="$(bash$$ date get_random)"
+  expected="[0-9]{4}-[0-9]{2}-[0-9]{2}"
+  [[ $result =~ $expected ]]
+}

tests/time/elapsed.bats

@@ -0,0 +1,15 @@
+#!/usr/bin/env bats
+
+source bashlet time/elapsed
+
+@test "time/elapsed: format a number of seconds" {
+  result="$(bash$$ elapsed seconds_to_formatted 86400)"
+  expected="01:00:00:00"
+  [[ $result == $expected ]]
+}
+
+@test "time/elapsed: describe a number of seconds" {
+  result="$(bash$$ elapsed seconds_to_description 86400)"
+  expected="1 day(s), 0 hour(s), 0 minute(s), 0 second(s)"
+  [[ $result == $expected ]]
+}

tests/time/month.bats

@@ -0,0 +1,9 @@
+#!/usr/bin/env bats
+
+source bashlet time/month
+
+@test "time/month: count days in month" {
+  result="$(bash$$ month count_days 1)"
+  expected=31
+  [[ $result -eq $expected ]]
+}

tests/time/year.bats

@@ -0,0 +1,8 @@
+#!/usr/bin/env bats
+
+source bashlet time/year
+
+@test "time/year: is a given year a leap year?" {
+  (bash$$ year is_leap 2000)
+  [[ $status -eq 0 ]]
+}