Added new test case to test correct text encoding

Author: codebude

QRCoderTests/QRGeneratorTests.cs

@@ -4,6 +4,9 @@
 using System.Collections.Generic;
 using System.Reflection;
 using Xunit;
+using System.Linq;
+using System.Collections;
+using System.Text;
 
 namespace QRCoderTests
 {
@@ -90,6 +93,56 @@ public void can_recognize_enconding_byte()
             result.ShouldBe(4);
         }
 
+        [Fact]
+        [Category("QRGenerator/TextEncoding")]
+        public void can_encode_numeric()
+        {
+            var gen = new QRCodeGenerator();
+            var qrData = gen.CreateQrCode("123", QRCodeGenerator.ECCLevel.L);
+            var result = string.Join("", qrData.ModuleMatrix.Select(x => x.ToBitString()).ToArray());
+            result.ShouldBe("0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001111111011111011111110000000010000010010100100000100000000101110100110001011101000000001011101001110010111010000000010111010001010101110100000000100000100001101000001000000001111111010101011111110000000000000000111110000000000000000110110100110101000001000000001110110000001010101100000000000110111100001101110000000000101111010011000001111000000000011101111100010011010000000000000000111110010101100000000111111100010111110001000000001000001000011101110010000000010111010101110110110100000000101110101011100011100000000001011101001100010001110000000010000010101001101010100000000111111101101000001110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
+        }
+
+        [Fact]
+        [Category("QRGenerator/TextEncoding")]
+        public void can_encode_alphanumeric()
+        {
+            var gen = new QRCodeGenerator();
+            var qrData = gen.CreateQrCode("123ABC", QRCodeGenerator.ECCLevel.L);
+            var result = string.Join("", qrData.ModuleMatrix.Select(x => x.ToBitString()).ToArray());
+            result.ShouldBe("0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001111111010111011111110000000010000010001100100000100000000101110101101001011101000000001011101011001010111010000000010111010100100101110100000000100000100111101000001000000001111111010101011111110000000000000000000110000000000000000111100101111110011101000000000111100010011110001110000000000100010100100000001000000000011110011111001110011000000001111101110101001000000000000000000000111100100100100000000111111100001100100110000000001000001000100001111110000000010111010010011111010100000000101110101111001011110000000001011101010101011000000000000010000010111001000010000000000111111101010010010010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
+        }
+
+        [Fact]
+        [Category("QRGenerator/TextEncoding")]
+        public void can_encode_byte()
+        {
+            var gen = new QRCodeGenerator();
+            var qrData = gen.CreateQrCode("äöü", QRCodeGenerator.ECCLevel.L);
+            var result = string.Join("", qrData.ModuleMatrix.Select(x => x.ToBitString()).ToArray());
+            result.ShouldBe("0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001111111001011011111110000000010000010011100100000100000000101110101101101011101000000001011101001010010111010000000010111010001010101110100000000100000100000101000001000000001111111010101011111110000000000000000110110000000000000000111011111111011000100000000001001110001100010000010000000010011110001010001001000000000110011010000001000110000000001110001111001010110110000000000000000111101010011100000000111111101111011100110000000001000001010011101110010000000010111010110101110010100000000101110100110001000110000000001011101011001000100010000000010000010100000100011000000000111111101110101010111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
+        }
+    }
+
+    public static class ExtensionMethods
+    {
+        public static string ToBitString(this BitArray bits)
+        {
+            var sb = new StringBuilder();
+            int bitLength = 0;
+#if !NETCOREAPP1_1
+            bitLength = bits.Count;
+#else
+            bitLength = bits.Length;
+#endif
+            for (int i = 0; i < bitLength; i++)
+            {
+                char c = bits[i] ? '1' : '0';
+                sb.Append(c);
+            }
+
+            return sb.ToString();
+        }
     }
 }