1 files changed, 3 insertions, 0 deletions
diff --git a/test/org/traccar/helper/PatternBuilderTest.java b/test/org/traccar/helper/PatternBuilderTest.java
index 427161758..10621693e 100644
--- a/test/org/traccar/helper/PatternBuilderTest.java
+++ b/test/org/traccar/helper/PatternBuilderTest.java
@@ -10,6 +10,9 @@ public class PatternBuilderTest {
         Assert.assertEquals("\\$GPRMC", new PatternBuilder().text("$GPRMC").toString());
         Assert.assertEquals("(\\d{2}\\.\\p{XDigit}+)", new PatternBuilder().number("(dd.x+)").toString());
         Assert.assertEquals("a(?:bc)?", new PatternBuilder().text("a").text("b").text("c").optional(2).toString());
+        Assert.assertEquals("a|b", new PatternBuilder().expression("a|b").toString());
+        Assert.assertEquals("ab\\|", new PatternBuilder().expression("ab|").toString());
+        Assert.assertEquals("|", new PatternBuilder().or().toString());
     }
 
 }