Add test case for #1262

querydsl-collections/src/test/java/com/querydsl/collections/GuavaOptionalTest.java

@@ -0,0 +1,49 @@
+package com.querydsl.collections;
+
+import static com.querydsl.collections.CollQueryFactory.from;
+import static com.querydsl.core.alias.Alias.$;
+import static com.querydsl.core.alias.Alias.alias;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Collection;
+
+import org.junit.Test;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.Lists;
+
+public class GuavaOptionalTest {
+
+    public static class Cat {
+
+        private Optional<String> pedigree = Optional.absent();
+
+        public Cat() {
+        }
+
+        public Cat(Optional<String> pedigree) {
+            this.pedigree = pedigree;
+        }
+
+        public Optional<String> getPedigree() {
+            return pedigree;
+        }
+    }
+
+    @Test
+    public void Test() {
+        Collection<Cat> cats = Lists.newArrayList();
+        cats.add(new Cat(Optional.<String>absent()));
+        cats.add(new Cat(Optional.of("persian")));
+        Cat c = alias(Cat.class);
+
+        for (Cat cat : from(c, cats)
+                .where($(c.getPedigree()).eq(Optional.of("persian")))
+                .list($(c))) {
+
+            assertTrue(cat.getPedigree().isPresent());
+            assertEquals("persian", cat.getPedigree().get());
+        }
+    }
+}