From 3cd3e64231eebdb45f2de59f128efd470ea0499e Mon Sep 17 00:00:00 2001
From: Sven Hettwer <sven.hettwer@consol.de>
Date: Fri, 22 Mar 2019 09:24:42 +0100
Subject: [PATCH] (citrusframework/citrus-db#28) Added truncate implementation

---
 .../citrus/db/driver/data/CitrusClob.java     | 20 ++++++++++++-------
 .../citrus/db/driver/data/CitrusClobTest.java | 16 +++++++++++++++
 2 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/driver/src/main/java/com/consol/citrus/db/driver/data/CitrusClob.java b/driver/src/main/java/com/consol/citrus/db/driver/data/CitrusClob.java
index d4d512b..5d0296c 100644
--- a/driver/src/main/java/com/consol/citrus/db/driver/data/CitrusClob.java
+++ b/driver/src/main/java/com/consol/citrus/db/driver/data/CitrusClob.java
@@ -119,8 +119,10 @@ public void close() {
     }
 
     @Override
-    public void truncate(final long len) throws SQLException {
-
+    public void truncate(final long len) {
+        if(fitsInInt(len)){
+            stringBuilder.delete((int)len, stringBuilder.length());
+        }
     }
 
     @Override
@@ -170,12 +172,16 @@ private long applyOffset(final long pos) {
      * @param stringToSet The String to set the content from.
      * @param offset  the index of the first character of {@code stringToSet} to be inserted. Starting at 0.
      * @param length The length of the string to set.
-     * @return
+     * @return The length of the string that has been set
      */
-    private int setContent(final StringBuilder stringBuilder, final int position, final String stringToSet, final int offset, final int length) {
-        final boolean expandsString = position + length > stringBuilder.length();
-
-        if(expandsString){
+    private int setContent(final StringBuilder stringBuilder,
+                           final int position,
+                           final String stringToSet,
+                           final int offset,
+                           final int length) {
+        final boolean expandsCurrentContent = position + length > stringBuilder.length();
+
+        if(expandsCurrentContent){
             stringBuilder.delete(position, stringBuilder.length());
             stringBuilder.insert(position, stringToSet.toCharArray(), offset, length);
         }else{
diff --git a/driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java b/driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java
index 8653746..7330d8d 100644
--- a/driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java
+++ b/driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java
@@ -266,6 +266,22 @@ public void testSetCharacterStream() throws Exception{
         assertEquals(clobContent, expectedClobContent);
     }
 
+    @Test
+    public void testTruncate() throws Exception {
+
+        //GIVEN
+        citrusClob.setString(1, sampleText);
+        final String expectedTruncatedString = "Keep calm";
+        final long desiredLength = expectedTruncatedString.length();
+
+        //WHEN
+        citrusClob.truncate(desiredLength);
+
+        //THEN
+        final String clobContent = IOUtils.toString(citrusClob.getCharacterStream());
+        assertEquals(clobContent, expectedTruncatedString);
+    }
+
     @Test
     public void testEqualsContract(){
         EqualsVerifier