Make StringValue symmetric so it can accept its output (toString) as input.

1 files changed, 30 insertions, 0 deletions

diff --git a/searchlib/src/test/java/com/yahoo/searchlib/rankingexpression/evaluation/EvaluationTestCase.java b/searchlib/src/test/java/com/yahoo/searchlib/rankingexpression/evaluation/EvaluationTestCase.java
index b769d07e77e..13e19ff4d35 100644
--- a/searchlib/src/test/java/com/yahoo/searchlib/rankingexpression/evaluation/EvaluationTestCase.java
+++ b/searchlib/src/test/java/com/yahoo/searchlib/rankingexpression/evaluation/EvaluationTestCase.java
@@ -14,6 +14,7 @@ import com.yahoo.tensor.Tensor;
 import org.junit.Test;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
 /**
@@ -25,6 +26,35 @@ public class EvaluationTestCase {
 
     private final double tolerance = 0.000001;
 
+    private void verifyStringValueToString(String s) {
+        s = '"' + s + '"';
+        Value val = Value.parse(s);
+        assertTrue(val instanceof StringValue);
+        assertEquals(s, val.toString());
+    }
+
+    @Test
+    public void testStringValueToString() {
+        verifyStringValueToString("");
+        verifyStringValueToString("something");
+        verifyStringValueToString("needs \\\" escape");
+
+        verifyStringValueToString("\\\\");
+        verifyStringValueToString("\\\"");
+        verifyStringValueToString("\\f");
+        verifyStringValueToString("\\female");
+        verifyStringValueToString("\\n");
+        verifyStringValueToString("\\nude");
+        verifyStringValueToString("\\r");
+        verifyStringValueToString("fa\\rt");
+        verifyStringValueToString("\\t");
+        verifyStringValueToString("fe\\tish");
+        verifyStringValueToString("\\f");
+        verifyStringValueToString("\\\\hx");
+        verifyStringValueToString("\\\\xx");
+        verifyStringValueToString("\\\\x10081977");
+    }
+
     @Test
     public void testEvaluation() {
         EvaluationTester tester = new EvaluationTester();