From 1b5a49d3c3587408d9b2dc231937c96dd3da5ca4 Mon Sep 17 00:00:00 2001
From: tmat <tomas.matousek@microsoft.com>
Date: Sun, 17 Nov 2024 16:45:18 -0800
Subject: [PATCH] better assert

---
 src/Compilers/CSharp/Test/CommandLine/CommandLineTests.cs    | 5 +++--
 .../VisualBasic/Test/CommandLine/CommandLineTests.vb         | 5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/Compilers/CSharp/Test/CommandLine/CommandLineTests.cs b/src/Compilers/CSharp/Test/CommandLine/CommandLineTests.cs
index bbe2205756f48..26066bbb7a09a 100644
--- a/src/Compilers/CSharp/Test/CommandLine/CommandLineTests.cs
+++ b/src/Compilers/CSharp/Test/CommandLine/CommandLineTests.cs
@@ -4796,8 +4796,9 @@ public void UnableWriteOutput_OutputFileLocked()
             Assert.Equal(1, exitCode);
             var output = outWriter.ToString().Trim();
 
-            var match = Regex.Match(output, @"error CS2012: Cannot open '(?<path>.*)' for writing -- (?<message>.*); file may be locked by '(?<app>.*)' \((?<pid>.*)\)");
-            Assert.True(match.Success);
+            var pattern = @"error CS2012: Cannot open '(?<path>.*)' for writing -- (?<message>.*); file may be locked by '(?<app>.*)' \((?<pid>.*)\)";
+            var match = Regex.Match(output, pattern);
+            Assert.True(match.Success, $"Expected:{Environment.NewLine}{pattern}{Environment.NewLine}Actual:{Environment.NewLine}{output}");
             Assert.Equal(filePath, match.Groups["path"].Value);
             Assert.Contains("testhost", match.Groups["app"].Value);
             Assert.Equal(currentProcess.Id, int.Parse(match.Groups["pid"].Value));
diff --git a/src/Compilers/VisualBasic/Test/CommandLine/CommandLineTests.vb b/src/Compilers/VisualBasic/Test/CommandLine/CommandLineTests.vb
index 0b691c173cde6..cef3e0c201746 100644
--- a/src/Compilers/VisualBasic/Test/CommandLine/CommandLineTests.vb
+++ b/src/Compilers/VisualBasic/Test/CommandLine/CommandLineTests.vb
@@ -5059,8 +5059,9 @@ End Class
                 Assert.Equal(1, exitCode)
                 Dim output = outWriter.ToString().Trim()
 
-                Dim match = Regex.Match(output, "vbc : error BC2012: can't open '(?<path>.*)' for writing: (?<message>.*); file may be locked by '(?<app>.*)' \((?<pid>.*)\)")
-                Assert.True(match.Success)
+                Dim pattern = "vbc : error BC2012: can't open '(?<path>.*)' for writing: (?<message>.*); file may be locked by '(?<app>.*)' \((?<pid>.*)\)"
+                Dim match = Regex.Match(output, pattern)
+                Assert.True(match.Success, $"Expected:{Environment.NewLine}{pattern}{Environment.NewLine}Actual:{Environment.NewLine}{output}")
                 Assert.Equal(filePath, match.Groups("path").Value)
                 Assert.Contains("testhost", match.Groups("app").Value)
                 Assert.Equal(currentProcess.Id, Integer.Parse(match.Groups("pid").Value))