From 07390fcb16ea3c46b90048642fb9b25767e82a7d Mon Sep 17 00:00:00 2001
From: Kalle Stenflo <kalle.stenflo@gmail.com>
Date: Wed, 11 Nov 2015 23:44:43 +0100
Subject: [PATCH] Added tests for EMPTY operator.

---
 .../java/com/jayway/jsonpath/FilterTest.java  | 25 ++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/json-path/src/test/java/com/jayway/jsonpath/FilterTest.java b/json-path/src/test/java/com/jayway/jsonpath/FilterTest.java
index d1aafce4..da6b87a2 100644
--- a/json-path/src/test/java/com/jayway/jsonpath/FilterTest.java
+++ b/json-path/src/test/java/com/jayway/jsonpath/FilterTest.java
@@ -370,7 +370,7 @@ public class FilterTest extends BaseTest {
 
     //----------------------------------------------------------------------------
     //
-    // EMPTY
+    // NOT EMPTY
     //
     //----------------------------------------------------------------------------
     @Test
@@ -384,6 +384,29 @@ public class FilterTest extends BaseTest {
         assertThat(filter(where("null-key").notEmpty()).apply(createPredicateContext(json))).isEqualTo(false);
     }
 
+    //----------------------------------------------------------------------------
+    //
+    // EMPTY
+    //
+    //----------------------------------------------------------------------------
+    @Test
+    public void empty_evals() {
+        assertThat(filter(where("string-key").empty(false)).apply(createPredicateContext(json))).isEqualTo(true);
+        assertThat(filter(where("string-key").empty(true)).apply(createPredicateContext(json))).isEqualTo(false);
+
+        assertThat(filter(where("string-key-empty").empty(true)).apply(createPredicateContext(json))).isEqualTo(true);
+        assertThat(filter(where("string-key-empty").empty(false)).apply(createPredicateContext(json))).isEqualTo(false);
+
+        assertThat(filter(where("int-arr").empty(false)).apply(createPredicateContext(json))).isEqualTo(true);
+        assertThat(filter(where("int-arr").empty(true)).apply(createPredicateContext(json))).isEqualTo(false);
+
+        assertThat(filter(where("arr-empty").empty(true)).apply(createPredicateContext(json))).isEqualTo(true);
+        assertThat(filter(where("arr-empty").empty(false)).apply(createPredicateContext(json))).isEqualTo(false);
+
+        assertThat(filter(where("null-key").empty(true)).apply(createPredicateContext(json))).isEqualTo(false);
+        assertThat(filter(where("null-key").empty(false)).apply(createPredicateContext(json))).isEqualTo(false);
+    }
+
 
     //----------------------------------------------------------------------------
     //