Port additional System.IO tests from ToF

Port additional System.IO tests from ToF for
System.IO.BinaryWriter
System.IO.MemoryStream
System.IO.Stream
System.IO.StreamReader
System.IO.StreamWriter
System.IO.StringReader
System.IO.StringWriter

1 files changed, 156 insertions, 0 deletions

diff --git a/src/System.IO/tests/StringReader/StringReaderCtorTests.cs b/src/System.IO/tests/StringReader/StringReaderCtorTests.cs
new file mode 100644
index 0000000000..39d3f24bee
--- /dev/null
+++ b/src/System.IO/tests/StringReader/StringReaderCtorTests.cs
@@ -0,0 +1,156 @@
+using System;
+using System.IO;
+using Xunit;
+
+namespace StringReaderTests
+{
+    public class ReaderTests
+    {
+        [Fact]
+        public static void StringReaderWithNullString()
+        {
+            // [] Null Argument should store null string
+            //-----------------------------------------------------------
+
+            Assert.Throws<ArgumentNullException>(() =>
+            {
+                StringReader sr = new StringReader(null);
+                String strTemp = sr.ReadToEnd();
+                sr.ReadLine();
+                sr.Peek();
+                sr.Read();
+                sr.Dispose();
+            });            
+
+        }
+
+        [Fact]
+        public static void StringReaderWithEmptyString()
+        {
+
+            // [] Check vanilla construction
+            //-----------------------------------------------------------
+            StringReader sr = new StringReader(String.Empty);
+            Assert.Equal(String.Empty, sr.ReadToEnd());
+        }
+
+        [Fact]
+        public static void StringReaderWithGenericString()
+        {
+            // [] Another vanilla construction
+            //-----------------------------------------------------------
+
+            StringReader sr = new StringReader("Hello\0World");
+            Assert.Equal("Hello\0World", sr.ReadToEnd());
+        }
+
+        [Fact]
+        public static void ReadEmtpyString() {
+            StringReader sr = new StringReader(String.Empty);
+            Assert.Equal(-1, sr.Read());
+
+        }
+
+        [Fact]
+        public static void ReadString() {
+            String str1 = "Hello\0\t\v   \\ World";
+            StringReader sr = new StringReader(str1);
+            for (int i = 0; i < str1.Length; i++)
+            {
+                Assert.Equal((int)str1[i], sr.Read());
+            }
+
+        }
+
+        [Fact]
+        public static void ReadPsudoRandomString()
+        {
+            String str1 = String.Empty;
+            Random r = new Random(-55);
+            for (int i = 0; i < 5000; i++)
+                str1 += (Char)r.Next(0, 255);
+
+            StringReader sr = new StringReader(str1);
+            for (int i = 0; i < str1.Length; i++)
+            {
+                Assert.Equal((int)str1[i], sr.Read());
+            }
+        }
+
+
+
+
+
+        [Fact]
+        public static void PeedEmtpyString()
+        {
+            StringReader sr = new StringReader(String.Empty);
+            Assert.Equal(-1, sr.Peek());
+
+        }
+
+        [Fact]
+        public static void PeekString()
+        {
+            String str1 = "Hello\0\t\v   \\ World";
+            StringReader sr = new StringReader(str1);
+            for (int i = 0; i < str1.Length; i++)
+            {
+                int test = sr.Peek();
+                sr.Read();
+                Assert.Equal((int)str1[i], test);
+            }
+
+        }
+
+        [Fact]
+        public static void PeekPsudoRandomString()
+        {
+            String str1 = String.Empty;
+            Random r = new Random(-55);
+            for (int i = 0; i < 5000; i++)
+                str1 += (Char)r.Next(0, 255);
+
+            StringReader sr = new StringReader(str1);
+            for (int i = 0; i < str1.Length; i++)
+            {
+                int test = sr.Peek();
+                sr.Read();
+                Assert.Equal((int)str1[i], test);
+            }
+        }
+
+        [Fact]
+        public static void ReadToEndEmptyString()
+        {
+            /////////////////////////  START TESTS ////////////////////////////
+            ///////////////////////////////////////////////////////////////////
+
+            StringReader sr;
+
+            sr = new StringReader(String.Empty);
+            Assert.Equal(String.Empty, sr.ReadToEnd());
+
+        }
+
+        [Fact]
+        public static void ReadToEndString() {
+            String str1 = "Hello\0\t\v   \\ World";
+            StringReader sr = new StringReader(str1);
+            Assert.Equal(str1, sr.ReadToEnd());
+        }
+
+        [Fact]
+        public static void ReadToEndPsuedoRandom() {
+            // [] Try with large random strings
+            //-----------------------------------------------------------
+            String str1 = String.Empty;
+            Random r = new Random(-55);
+            for (int i = 0; i < 10000; i++)
+                str1 += (Char)r.Next(0, 255);
+
+            StringReader sr = new StringReader(str1);
+            Assert.Equal(str1, sr.ReadToEnd());
+        }
+    }
+}