From 03ae5b9081010c90782d461dae8d5dc57465e24b Mon Sep 17 00:00:00 2001
From: Yegor Bugayenko <yegor@teamed.io>
Date: Sat, 19 Nov 2016 21:12:04 +0200
Subject: [PATCH] #85 MkRegion more fixes

---
 .../java/com/jcabi/dynamo/mock/H2Data.java    |  2 +-
 .../java/com/jcabi/dynamo/mock/MkItem.java    | 12 +++---
 .../com/jcabi/dynamo/mock/MkRegionTest.java   | 38 ++++++++++++++++++-
 3 files changed, 44 insertions(+), 8 deletions(-)

diff --git a/src/main/java/com/jcabi/dynamo/mock/H2Data.java b/src/main/java/com/jcabi/dynamo/mock/H2Data.java
index 33f6d6c..599dfc9 100644
--- a/src/main/java/com/jcabi/dynamo/mock/H2Data.java
+++ b/src/main/java/com/jcabi/dynamo/mock/H2Data.java
@@ -213,7 +213,7 @@ public String apply(final String input) {
                                 )
                             );
                         }
-                        return matcher.group(1);
+                        return matcher.group(1).toLowerCase(Locale.ENGLISH);
                     }
                 }
             );
diff --git a/src/main/java/com/jcabi/dynamo/mock/MkItem.java b/src/main/java/com/jcabi/dynamo/mock/MkItem.java
index 20b039a..18b26b1 100644
--- a/src/main/java/com/jcabi/dynamo/mock/MkItem.java
+++ b/src/main/java/com/jcabi/dynamo/mock/MkItem.java
@@ -110,7 +110,8 @@ public boolean has(final String name) throws IOException {
 
     @Override
     public Map<String, AttributeValue> put(
-        final String name, final AttributeValueUpdate value) {
+        final String name, final AttributeValueUpdate value)
+        throws IOException {
         return this.put(
             new ImmutableMap.Builder<String, AttributeValueUpdate>()
                 .put(name, value).build()
@@ -119,12 +120,11 @@ public Map<String, AttributeValue> put(
 
     @Override
     public Map<String, AttributeValue> put(
-        final Map<String, AttributeValueUpdate> attrs) {
+        final Map<String, AttributeValueUpdate> attrs) throws IOException {
         final Map<String, AttributeValue> keys =
-            new HashMap<String, AttributeValue>();
-        keys.putAll(this.attributes);
-        for (final String attr : attrs.keySet()) {
-            keys.remove(attr);
+            new HashMap<String, AttributeValue>(0);
+        for (final String attr : this.data.keys(this.table)) {
+            keys.put(attr, this.attributes.get(attr));
         }
         try {
             this.data.update(
diff --git a/src/test/java/com/jcabi/dynamo/mock/MkRegionTest.java b/src/test/java/com/jcabi/dynamo/mock/MkRegionTest.java
index 643ed54..3213116 100644
--- a/src/test/java/com/jcabi/dynamo/mock/MkRegionTest.java
+++ b/src/test/java/com/jcabi/dynamo/mock/MkRegionTest.java
@@ -29,6 +29,7 @@
  */
 package com.jcabi.dynamo.mock;
 
+import com.amazonaws.services.dynamodbv2.model.AttributeAction;
 import com.amazonaws.services.dynamodbv2.model.AttributeValue;
 import com.amazonaws.services.dynamodbv2.model.AttributeValueUpdate;
 import com.jcabi.dynamo.Attributes;
@@ -44,6 +45,7 @@
  * @author Yegor Bugayenko (yegor@tpc2.com)
  * @version $Id$
  * @since 0.10
+ * @checkstyle MultipleStringLiteralsCheck (500 lines)
  */
 public final class MkRegionTest {
 
@@ -56,14 +58,16 @@ public void storesAndReadsAttributes() throws Exception {
         final String name = "users";
         final String key = "id";
         final String attr = "description";
+        final String nattr = "thenumber";
         final Region region = new MkRegion(
-            new H2Data().with(name, new String[] {key}, attr)
+            new H2Data().with(name, new String[] {key}, attr, nattr)
         );
         final Table table = region.table(name);
         table.put(
             new Attributes()
                 .with(key, "32443")
                 .with(attr, "first value to \n\t€ save")
+                .with(nattr, "150")
         );
         final Item item = table.frame().iterator().next();
         MatcherAssert.assertThat(item.has(attr), Matchers.is(true));
@@ -81,6 +85,38 @@ public void storesAndReadsAttributes() throws Exception {
             item.get(attr).getS(),
             Matchers.containsString("another value")
         );
+        MatcherAssert.assertThat(
+            item.get(nattr).getN(),
+            Matchers.endsWith("50")
+        );
+    }
+
+    /**
+     * MkRegion can store and read items.
+     * @throws Exception If some problem inside
+     */
+    @Test
+    public void storesAndReadsSingleAttribute() throws Exception {
+        final String table = "ideas";
+        final String key = "number";
+        final String attr = "total";
+        final Region region = new MkRegion(
+            new H2Data().with(table, new String[] {key}, attr)
+        );
+        final Table tbl = region.table(table);
+        tbl.put(
+            new Attributes()
+                .with(key, "32443")
+                .with(attr, "0")
+        );
+        final Item item = tbl.frame().iterator().next();
+        item.put(
+            attr,
+            new AttributeValueUpdate().withValue(
+                new AttributeValue().withN("2")
+            ).withAction(AttributeAction.PUT)
+        );
+        MatcherAssert.assertThat(item.get(attr).getN(), Matchers.equalTo("2"));
     }
 
 }