1 files changed, 117 insertions, 0 deletions
diff --git a/homework/81709/JSCompiler.Core.Tests/BaseInputStreamFileTests.cs b/homework/81709/JSCompiler.Core.Tests/BaseInputStreamFileTests.cs
new file mode 100644
index 0000000..ebc557c
--- /dev/null
+++ b/homework/81709/JSCompiler.Core.Tests/BaseInputStreamFileTests.cs
@@ -0,0 +1,117 @@
+using System;
+using System.Text;
+using System.Collections.Generic;
+using System.IO;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace JSCompiler.Core.Tests
+{
+    [TestClass]
+    public class BaseInputStreamTests
+    {
+        [TestMethod]
+        public void IsEndOfStream_WhenNotEnd_ReturnsFalse()
+        {
+            byte[] buff = new byte[3] { 32, 14, 25 };
+            MemoryStream memStream = new MemoryStream(buff);
+            BaseInputStream testInputStream = new BaseInputStream(memStream);
+
+            bool isEnd;
+            for(int i = 0; i < 2; i++)
+            {
+                isEnd = testInputStream.IsEndOfStream();
+                testInputStream.Next();
+                Assert.IsFalse(isEnd);
+            }
+        }
+
+        [TestMethod]
+        public void IsEndOfStream_AtBeginningWithoutData_ReturnsTrue()
+        {
+            MemoryStream memStream = new MemoryStream();
+            BaseInputStream testInputStream = new BaseInputStream(memStream);
+
+            bool isEnd = testInputStream.IsEndOfStream();
+
+            Assert.IsTrue(isEnd);
+        }
+
+        [TestMethod]
+        public void IsEndOfStream_WhenEnd_ReturnsTrue()
+        {
+            byte[] buff = new byte[3] { 32, 14, 25 };
+            MemoryStream memStream = new MemoryStream(buff);
+            BaseInputStream testInputStream = new BaseInputStream(memStream);
+
+            for (int i = 0; i < 3; i++, testInputStream.Next());
+            bool isEnd = testInputStream.IsEndOfStream();
+
+            Assert.IsTrue(isEnd);
+        }
+
+        [TestMethod]
+        public void Peek_AtPosition_ReturnsCorrectItemFromStream()
+        {
+            byte[] buff = new byte[8] { 32, 14, 25, 14, 12, 51, 25, 33 };
+            MemoryStream memStream = new MemoryStream(buff);
+            BaseInputStream testInputStream = new BaseInputStream(memStream);
+            char item;
+
+            for (int i = 0; i < 5; i++, testInputStream.Next())
+            {
+                item = testInputStream.Peek();
+                Assert.AreEqual((char)buff[i], item);
+            }
+        }
+
+        [TestMethod]
+        public void Peek_AtEnd_ReturnsEndItem()
+        {
+            byte[] buff = new byte[3] { 32, 14, 25 };
+            MemoryStream memStream = new MemoryStream(buff);
+            BaseInputStream testInputStream = new BaseInputStream(memStream);
+
+            for (int i = 0; i < 3; i++, testInputStream.Next());
+            char last = testInputStream.Peek();
+
+            Assert.AreEqual(0, last);
+        }
+
+        [TestMethod]
+        [ExpectedException(typeof(EndOfStreamException))]
+        public void Next_WhenEndStream_ThrowsEndOfStreamException()
+        {
+            byte[] buff = new byte[3] { 32, 14, 25 };
+            MemoryStream memStream = new MemoryStream(buff);
+            BaseInputStream testInputStream = new BaseInputStream(memStream);
+
+            for (int i = 0; i < 4; i++, testInputStream.Next());
+        }
+
+        [TestMethod]
+        public void Next_WhenBuffersAreSwapped_ReturnsCorrectItem()
+        {
+            byte[] buff = new byte[10] { 32, 14, 25, 14, 23, 42, 16, 21, 15, 76 };
+            MemoryStream memStream = new MemoryStream(buff);
+            BaseInputStream testInputStream = new BaseInputStream(memStream, 3);
+
+            for (int i = 0; i < 10; i++)
+            {
+                char curr = testInputStream.Next();
+                Assert.AreEqual((char)buff[i], curr);
+            }
+        }
+
+        [TestMethod]
+        public void Line_NewLinesTracking_ReturnsCorrectNumberOfLines()
+        {
+            byte[] buff = new byte[10] { (byte) '\n', 32, 14, 25, 14, (byte) '\n', 42, 16, (byte) '\n', (byte)'\n' };
+            MemoryStream memStream = new MemoryStream(buff);
+            BaseInputStream testInputStream = new BaseInputStream(memStream);
+
+            for (int i = 0; i < 10; i++, testInputStream.Next());
+
+            Assert.AreEqual(4, testInputStream.Line);
+        }
+    }
+}