diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByDayRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByDayRuleTest.groovy
new file mode 100644
index 000000000..9f8b50b00
--- /dev/null
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByDayRuleTest.groovy
@@ -0,0 +1,27 @@
+package net.fortuna.ical4j.transform.recurrence
+
+import net.fortuna.ical4j.model.Date
+import net.fortuna.ical4j.model.DateList
+import net.fortuna.ical4j.model.WeekDay
+import net.fortuna.ical4j.model.WeekDayList
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class ByDayRuleTest extends Specification {
+
+    def 'verify transformations by day'() {
+        given: 'a BYDAY rule'
+        ByDayRule rule = [new WeekDayList(rulePart), filterType]
+
+        and: 'a list of dates'
+        DateList dateList = [Value.DATE]
+        dateList.addAll(dates)
+
+        expect: 'the rule transforms the dates correctly'
+        rule.transform(dateList) == expectedResult
+
+        where:
+        rulePart    | filterType                    | dates                  | expectedResult
+        WeekDay.FR  | ByDayRule.FilterType.Weekly   | [new Date('20150103')] | [new Date('20150102')]
+    }
+}
diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByHourRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByHourRuleTest.groovy
new file mode 100644
index 000000000..2adba81c2
--- /dev/null
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByHourRuleTest.groovy
@@ -0,0 +1,27 @@
+package net.fortuna.ical4j.transform.recurrence
+
+
+import net.fortuna.ical4j.model.DateList
+import net.fortuna.ical4j.model.DateTime
+import net.fortuna.ical4j.model.NumberList
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class ByHourRuleTest extends Specification {
+
+    def 'verify transformations by day'() {
+        given: 'a BYHOUR rule'
+        ByHourRule rule = [new NumberList(rulePart)]
+
+        and: 'a list of dates'
+        DateList dateList = [Value.DATE_TIME]
+        dateList.addAll(dates)
+
+        expect: 'the rule transforms the dates correctly'
+        rule.transform(dateList) == expectedResult
+
+        where:
+        rulePart | dates                              | expectedResult
+        '1'      | [new DateTime('20150103T000000Z')] | [new DateTime('20150103T010000Z')]
+    }
+}
diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMinuteRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMinuteRuleTest.groovy
new file mode 100644
index 000000000..b85b54bdd
--- /dev/null
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMinuteRuleTest.groovy
@@ -0,0 +1,27 @@
+package net.fortuna.ical4j.transform.recurrence
+
+
+import net.fortuna.ical4j.model.DateList
+import net.fortuna.ical4j.model.DateTime
+import net.fortuna.ical4j.model.NumberList
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class ByMinuteRuleTest extends Specification {
+
+    def 'verify transformations by day'() {
+        given: 'a BYMINUTE rule'
+        ByMinuteRule rule = [new NumberList(rulePart)]
+
+        and: 'a list of dates'
+        DateList dateList = [Value.DATE_TIME]
+        dateList.addAll(dates)
+
+        expect: 'the rule transforms the dates correctly'
+        rule.transform(dateList) == expectedResult
+
+        where:
+        rulePart | dates                              | expectedResult
+        '1'      | [new DateTime('20150103T000000Z')] | [new DateTime('20150103T000100Z')]
+    }
+}
diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMonthDayRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMonthDayRuleTest.groovy
new file mode 100644
index 000000000..98c343040
--- /dev/null
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMonthDayRuleTest.groovy
@@ -0,0 +1,26 @@
+package net.fortuna.ical4j.transform.recurrence
+
+import net.fortuna.ical4j.model.Date
+import net.fortuna.ical4j.model.DateList
+import net.fortuna.ical4j.model.NumberList
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class ByMonthDayRuleTest extends Specification {
+
+    def 'verify transformations by day'() {
+        given: 'a BYMONTHDAY rule'
+        ByMonthDayRule rule = [new NumberList(rulePart)]
+
+        and: 'a list of dates'
+        DateList dateList = [Value.DATE]
+        dateList.addAll(dates)
+
+        expect: 'the rule transforms the dates correctly'
+        rule.transform(dateList) == expectedResult
+
+        where:
+        rulePart | dates                  | expectedResult
+        '1'      | [new Date('20150103')] | [new Date('20150101')]
+    }
+}
diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMonthRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMonthRuleTest.groovy
new file mode 100644
index 000000000..6840e2b1a
--- /dev/null
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByMonthRuleTest.groovy
@@ -0,0 +1,26 @@
+package net.fortuna.ical4j.transform.recurrence
+
+import net.fortuna.ical4j.model.Date
+import net.fortuna.ical4j.model.DateList
+import net.fortuna.ical4j.model.NumberList
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class ByMonthRuleTest extends Specification {
+
+    def 'verify transformations by month'() {
+        given: 'a bymonth rule'
+        ByMonthRule rule = [new NumberList(byMonthPart), Optional.empty()]
+
+        and: 'a list of dates'
+        DateList dateList = [Value.DATE]
+        dateList.addAll(dates)
+
+        expect: 'the rule transforms the dates correctly'
+        rule.transform(dateList) == expectedResult
+
+        where:
+        byMonthPart     | dates                           | expectedResult
+        '1,2'         | [new Date('20150103')]    | [new Date('20150103'), new Date('20150203')]
+    }
+}
diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/BySecondRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/BySecondRuleTest.groovy
new file mode 100644
index 000000000..d9a99da0b
--- /dev/null
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/BySecondRuleTest.groovy
@@ -0,0 +1,27 @@
+package net.fortuna.ical4j.transform.recurrence
+
+
+import net.fortuna.ical4j.model.DateList
+import net.fortuna.ical4j.model.DateTime
+import net.fortuna.ical4j.model.NumberList
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class BySecondRuleTest extends Specification {
+
+    def 'verify transformations by day'() {
+        given: 'a BYSECOND rule'
+        BySecondRule rule = [new NumberList(rulePart)]
+
+        and: 'a list of dates'
+        DateList dateList = [Value.DATE_TIME]
+        dateList.addAll(dates)
+
+        expect: 'the rule transforms the dates correctly'
+        rule.transform(dateList) == expectedResult
+
+        where:
+        rulePart | dates                      | expectedResult
+        '1'      | [new DateTime('20150103T000000Z')] | [new DateTime('20150103T000001Z')]
+    }
+}
diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/BySetPosRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/BySetPosRuleTest.groovy
new file mode 100644
index 000000000..9d7633720
--- /dev/null
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/BySetPosRuleTest.groovy
@@ -0,0 +1,26 @@
+package net.fortuna.ical4j.transform.recurrence
+
+import net.fortuna.ical4j.model.Date
+import net.fortuna.ical4j.model.DateList
+import net.fortuna.ical4j.model.NumberList
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class BySetPosRuleTest extends Specification {
+
+    def 'verify transformations by day'() {
+        given: 'a BYSETPOS rule'
+        BySetPosRule rule = [new NumberList(rulePart)]
+
+        and: 'a list of dates'
+        DateList dateList = [Value.DATE]
+        dateList.addAll(dates)
+
+        expect: 'the rule transforms the dates correctly'
+        rule.transform(dateList) == expectedResult
+
+        where:
+        rulePart | dates                  | expectedResult
+        '1'      | [new Date('20150103')] | [new Date('20150103')]
+    }
+}
diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByWeekNoRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByWeekNoRuleTest.groovy
index c7aadb5cd..5fdeef7ee 100644
--- a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByWeekNoRuleTest.groovy
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByWeekNoRuleTest.groovy
@@ -9,7 +9,7 @@ import spock.lang.Specification
 class ByWeekNoRuleTest extends Specification {
 
     def 'verify transformations by week number'() {
-        given: 'a byweekno rule'
+        given: 'a BYWEEKNO rule'
         ByWeekNoRule rule = [new NumberList(byWeekNoPart)]
 
         and: 'a list of dates'
diff --git a/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByYearDayRuleTest.groovy b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByYearDayRuleTest.groovy
new file mode 100644
index 000000000..cf234c548
--- /dev/null
+++ b/src/test/groovy/net/fortuna/ical4j/transform/recurrence/ByYearDayRuleTest.groovy
@@ -0,0 +1,26 @@
+package net.fortuna.ical4j.transform.recurrence
+
+import net.fortuna.ical4j.model.Date
+import net.fortuna.ical4j.model.DateList
+import net.fortuna.ical4j.model.NumberList
+import net.fortuna.ical4j.model.parameter.Value
+import spock.lang.Specification
+
+class ByYearDayRuleTest extends Specification {
+
+    def 'verify transformations by day'() {
+        given: 'a BYYEARDAY rule'
+        ByYearDayRule rule = [new NumberList(rulePart)]
+
+        and: 'a list of dates'
+        DateList dateList = [Value.DATE]
+        dateList.addAll(dates)
+
+        expect: 'the rule transforms the dates correctly'
+        rule.transform(dateList) == expectedResult
+
+        where:
+        rulePart | dates                        | expectedResult
+        '1'      | [new Date('20150103')] | [new Date('20150101')]
+    }
+}