Add StreamReaderReadLineTests and base TextReaderReadLineTests (#2170)

* Add StreamReaderReadLineTests and base TextReaderReadLineTests
* change to create memorystream on each invocation instead

Author: nietras

src/benchmarks/micro/libraries/System.IO/StreamReaderReadLineTests.cs

@@ -0,0 +1,39 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+usingSystem.Text;
+usingSystem.Threading.Tasks;
+usingBenchmarkDotNet.Attributes;
+usingMicroBenchmarks;
+
+namespaceSystem.IO.Tests
+{
+[BenchmarkCategory(Categories.Libraries)]
+publicclassStreamReaderReadLineTests:TextReaderReadLineTests
+{
+privatebyte[]_bytes;
+
+[GlobalSetup]
+publicvoidGlobalSetup()
+{
+_text=GenerateLinesText(LineLengthRange,16*1024);
+_bytes=Encoding.UTF8.GetBytes(_text);
+}
+
+[Benchmark]
+publicvoidReadLine()
+{
+usingStreamReaderreader=new(newMemoryStream(_bytes));
+while(reader.ReadLine()!=null);
+}
+
+[Benchmark]
+[BenchmarkCategory(Categories.NoWASM)]
+publicasyncTaskReadLineAsync()
+{
+usingStreamReaderreader=new(newMemoryStream(_bytes));
+while(awaitreader.ReadLineAsync()!=null);
+}
+}
+}

src/benchmarks/micro/libraries/System.IO/StringReaderReadLineTests.cs

@@ -12,32 +12,8 @@
 namespaceSystem.IO.Tests
 {
 [BenchmarkCategory(Categories.Libraries)]
-publicclassStringReaderReadLineTests
+publicclassStringReaderReadLineTests:TextReaderReadLineTests
 {
-privatestring_text;
-
-[ParamsSource(nameof(GetLineLengthRanges))]
-publicRangeLineLengthRange{get;set;}
-
-publicstaticIEnumerable<Range>GetLineLengthRanges()
-{
-yieldreturnnew(){Min=0,Max=0};
-yieldreturnnew(){Min=1,Max=1};
-yieldreturnnew(){Min=1,Max=8};
-yieldreturnnew(){Min=9,Max=32};
-yieldreturnnew(){Min=33,Max=128};
-yieldreturnnew(){Min=129,Max=1024};
-yieldreturnnew(){Min=0,Max=1024};
-}
-
-publicclassRange
-{
-publicintMin{get;set;}
-publicintMax{get;set;}
-
-publicoverridestringToString()=>$"[{Min,4}, {Max,4}]";
-}
-
 [GlobalSetup]
 publicvoidGlobalSetup()=>_text=GenerateLinesText(LineLengthRange,16*1024);
 
@@ -55,36 +31,5 @@ public async Task ReadLineAsync()
 usingStringReaderreader=new(_text);
 while(awaitreader.ReadLineAsync()!=null);
 }
-
-privatestaticstringGenerateLinesText(RangelineLengthRange,inttextTargetLength)
-{
-varmin=lineLengthRange.Min;
-varmax=lineLengthRange.Max;
-
-varnewLine=Environment.NewLine;
-
-varcapacity=textTargetLength+max+newLine.Length;
-varsb=newStringBuilder(capacity);
-
-varrandom=newRandom(42);
-intlineCount=0;
-while(sb.Length<textTargetLength)
-{
-varcharsCount=random.Next(min,max);
-for(intc=0;c<charsCount;c++)
-{
-varch=(char)random.Next('0','z');
-sb.Append(ch);
-}
-sb.Append(newLine);
-++lineCount;
-}
-vartext=sb.ToString();
-
-Console.WriteLine($"// Generated lines {lineCount} and "+
-$"text length {text.Length} out of capacity {capacity}");
-
-returntext;
-}
 }
 }

src/benchmarks/micro/libraries/System.IO/TextReaderReadLineTests.cs

@@ -0,0 +1,71 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+usingSystem.Collections.Generic;
+usingSystem.Text;
+usingBenchmarkDotNet.Attributes;
+usingMicroBenchmarks;
+
+namespaceSystem.IO.Tests
+{
+[BenchmarkCategory(Categories.Libraries)]
+publicabstractclassTextReaderReadLineTests
+{
+protectedstring_text;
+
+[ParamsSource(nameof(GetLineLengthRanges))]
+publicRangeLineLengthRange{get;set;}
+
+publicstaticIEnumerable<Range>GetLineLengthRanges()
+{
+yieldreturnnew(){Min=0,Max=0};
+yieldreturnnew(){Min=1,Max=1};
+yieldreturnnew(){Min=1,Max=8};
+yieldreturnnew(){Min=9,Max=32};
+yieldreturnnew(){Min=33,Max=128};
+yieldreturnnew(){Min=129,Max=1024};
+yieldreturnnew(){Min=1025,Max=2048};
+yieldreturnnew(){Min=0,Max=1024};
+}
+
+publicclassRange
+{
+publicintMin{get;set;}
+publicintMax{get;set;}
+
+publicoverridestringToString()=>$"[{Min,4}, {Max,4}]";
+}
+
+protectedstaticstringGenerateLinesText(RangelineLengthRange,inttextTargetLength)
+{
+varmin=lineLengthRange.Min;
+varmax=lineLengthRange.Max;
+
+varnewLine=Environment.NewLine;
+
+varcapacity=textTargetLength+max+newLine.Length;
+varsb=newStringBuilder(capacity);
+
+varrandom=newRandom(42);
+intlineCount=0;
+while(sb.Length<textTargetLength)
+{
+varcharsCount=random.Next(min,max);
+for(intc=0;c<charsCount;c++)
+{
+varch=(char)random.Next('0','z');
+sb.Append(ch);
+}
+sb.Append(newLine);
+++lineCount;
+}
+vartext=sb.ToString();
+
+Console.WriteLine($"// Generated lines {lineCount} and "+
+$"text length {text.Length} out of capacity {capacity}");
+
+returntext;
+}
+}
+}