Added a few basic unit tests.

Demo/XMLReaderTests/XMLReaderTests.h

@@ -10,7 +10,6 @@
 
 @interface XMLReaderTests : SenTestCase
 {
-@private
 
 }
 

Demo/XMLReaderTests/XMLReaderTests.m

@@ -7,6 +7,7 @@
 //
 
 #import "XMLReaderTests.h"
+#import "XMLReader.h"
 
 @implementation XMLReaderTests
 
@@ -24,9 +25,78 @@ - (void)tearDown
     [super tearDown];
 }
 
-- (void)testExample
+- (void)testXMLReaderFailsWithNoData
 {
-    STFail(@"Unit tests are not implemented yet in DemoTests");
+    NSData *data = nil;
+    NSError *error = nil;
+
+    NSDictionary *dictionary = [XMLReader dictionaryForXMLData:data error:&error];
+
+    STAssertNil(dictionary, @"dictionary should be nil");
+    STAssertNotNil(error, @"error should not be nil");    
+}
+
+- (void)testXMLReaderFailsWithNoString
+{
+    NSString *string = nil;
+    NSError *error = nil;
+
+    NSDictionary *dictionary = [XMLReader dictionaryForXMLString:string error:&error];
+
+    STAssertNil(dictionary, @"dictionary should be nil");
+    STAssertNotNil(error, @"error should not be nil");    
+}
+
+- (void)testXMLReaderFailsWithInvalidPath
+{
+    NSString *path = nil;
+    NSError *error = nil;
+
+    NSDictionary *dictionary = [XMLReader dictionaryForPath:path error:&error];
+
+    STAssertNil(dictionary, @"dictionary should be nil");
+    STAssertNotNil(error, @"error should not be nil");    
+}
+
+- (void)testXMLReaderFailsWithInvalidXML
+{
+    NSString *xmlString = @"<goodxml>this is good</goodxml><badxml>this is bad</goodxml>";
+    NSError *error = nil;
+
+    NSDictionary *dictionary = [XMLReader dictionaryForXMLString:xmlString error:&error];
+
+    STAssertNil(dictionary, @"dictionary should be nil");
+    STAssertNotNil(error, @"error should not be nil");
+}
+
+- (void)testXMLReaderSucceedsWithBasicXML
+{
+    NSString *xmlString = @"<outernode><innernode>somevalue</innernode></outernode>";
+    NSError *error = nil;
+
+    NSDictionary *dictionary = [XMLReader dictionaryForXMLString:xmlString error:&error];
+
+    STAssertNotNil(dictionary, @"dictionary should not be nil");
+    STAssertNil(error, @"error should be nil");
+    STAssertTrue([[dictionary objectForKey:@"outernode"] isKindOfClass:[NSDictionary class]], @"outernode should be a dictionary");
+    STAssertTrue([[[dictionary objectForKey:@"outernode"] objectForKey:@"innernode"] isEqualToString:@"somevalue"], @"node values should match");
 }
 
+- (void)testXMLReaderSucceedsWithComplexXML
+{
+    NSData *xmlData = [NSData dataWithContentsOfFile:[[NSBundle bundleForClass:[self class]] pathForResource:@"complex" ofType:@"xml"]];
+    STAssertNotNil(xmlData, @"Failed to load XML file");
+
+    NSError *error = nil;
+
+    NSDictionary *dictionary = [XMLReader dictionaryForXMLData:xmlData error:&error];
+    NSLog(@"%@", [dictionary description]);
+
+    STAssertNotNil(dictionary, @"dictionary should not be nil");
+    STAssertNil(error, @"error should be nil");
+
+    // TODO: Spot check a few of the nodes are correct in the dictionary
+}
+
+
 @end

Demo/XMLReaderTests/complex.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="catalog.xsl" type="text/xsl"?>
+<!DOCTYPE catalog SYSTEM "catalog.dtd">
+<catalog>
+    <product description="Cardigan Sweater" product_image="cardigan.jpg">
+        <catalog_item gender="Men's">
+            <item_number>QWZ5671</item_number>
+            <price>39.95</price>
+            <size description="Medium">
+                <color_swatch image="red_cardigan.jpg">Red</color_swatch>
+                <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
+            </size>
+            <size description="Large">
+                <color_swatch image="red_cardigan.jpg">Red</color_swatch>
+                <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
+            </size>
+        </catalog_item>
+        <catalog_item gender="Women's">
+            <item_number>RRX9856</item_number>
+            <price>42.50</price>
+            <size description="Small">
+                <color_swatch image="red_cardigan.jpg">Red</color_swatch>
+                <color_swatch image="navy_cardigan.jpg">Navy</color_swatch>
+                <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
+            </size>
+            <size description="Medium">
+                <color_swatch image="red_cardigan.jpg">Red</color_swatch>
+                <color_swatch image="navy_cardigan.jpg">Navy</color_swatch>
+                <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
+                <color_swatch image="black_cardigan.jpg">Black</color_swatch>
+            </size>
+            <size description="Large">
+                <color_swatch image="navy_cardigan.jpg">Navy</color_swatch>
+                <color_swatch image="black_cardigan.jpg">Black</color_swatch>
+            </size>
+            <size description="Extra Large">
+                <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
+                <color_swatch image="black_cardigan.jpg">Black</color_swatch>
+            </size>
+        </catalog_item>
+    </product>
+</catalog>