Added tests for EnvironmentVariablesConfigurationProvider.ToString() (#56778)

- Check the format in tests
- Updated the ref

diff --git a/src/libraries/Microsoft.Extensions.Configuration.EnvironmentVariables/ref/Microsoft.Extensions.Configuration.EnvironmentVariables.cs b/src/libraries/Microsoft.Extensions.Configuration.EnvironmentVariables/ref/Microsoft.Extensions.Configuration.EnvironmentVariables.cs
index d6e4271..5292b3f 100644 (file)
--- a/src/libraries/Microsoft.Extensions.Configuration.EnvironmentVariables/ref/Microsoft.Extensions.Configuration.EnvironmentVariables.cs
+++ b/src/libraries/Microsoft.Extensions.Configuration.EnvironmentVariables/ref/Microsoft.Extensions.Configuration.EnvironmentVariables.cs
@@ -20,6 +20,7 @@ namespace Microsoft.Extensions.Configuration.EnvironmentVariables
         public EnvironmentVariablesConfigurationProvider() { }
         public EnvironmentVariablesConfigurationProvider(string prefix) { }
         public override void Load() { }
+        public override string ToString() { throw null; }
     }
     public partial class EnvironmentVariablesConfigurationSource : Microsoft.Extensions.Configuration.IConfigurationSource
     {

diff --git a/src/libraries/Microsoft.Extensions.Configuration.EnvironmentVariables/tests/EnvironmentVariablesTest.cs b/src/libraries/Microsoft.Extensions.Configuration.EnvironmentVariables/tests/EnvironmentVariablesTest.cs
index d23fe8f..c5b1030 100644 (file)
--- a/src/libraries/Microsoft.Extensions.Configuration.EnvironmentVariables/tests/EnvironmentVariablesTest.cs
+++ b/src/libraries/Microsoft.Extensions.Configuration.EnvironmentVariables/tests/EnvironmentVariablesTest.cs
@@ -31,6 +31,7 @@ namespace Microsoft.Extensions.Configuration.EnvironmentVariables.Test
             Assert.Equal("SqlClient", envConfigSrc.Get("DEFAULTCONNECTION:PROVIDER"));
             Assert.Equal("AnotherTestConnectionString", envConfigSrc.Get("Inventory:CONNECTIONSTRING"));
             Assert.Equal("MySql", envConfigSrc.Get("Inventory:Provider"));
+            Assert.Equal("EnvironmentVariablesConfigurationProvider Prefix: ''", envConfigSrc.ToString());
         }
 
         [Fact]
@@ -49,6 +50,7 @@ namespace Microsoft.Extensions.Configuration.EnvironmentVariables.Test
 
             Assert.Equal("TestConnectionString", envConfigSrc.Get("ConnectionString"));
             Assert.Equal("SqlClient", envConfigSrc.Get("Provider"));
+            Assert.Equal("EnvironmentVariablesConfigurationProvider Prefix: 'DefaultConnection:'", envConfigSrc.ToString());
         }
 
         [Fact]