ChangeFeed tests: Adds DoNotParallelize to env-var-dependent test classes

kirankumarkolli · Copilot · kirankumarkolli · commit 19922d25518d · 2026-04-22T17:49:18.000-07:00
Both DocumentServiceLeaseManagerCosmosTests and GremlinSmokeTests
mutate the AZURE_COSMOS_CHANGE_FEED_LEASE_ID_AS_PARTITION_KEY_ENABLED
environment variable, which is process-wide state. Without
DoNotParallelize, concurrent test classes could overwrite each
other's env var values, causing flaky failures.

Co-authored-by: Copilot &lt;223556219+Copilot@users.noreply.github.com&gt;
diff --git a/Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.EmulatorTests/ChangeFeed/GremlinSmokeTests.cs b/Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.EmulatorTests/ChangeFeed/GremlinSmokeTests.cs
@@ -12,6 +12,7 @@ namespace Microsoft.Azure.Cosmos.SDK.EmulatorTests.ChangeFeed
 
     [TestClass]
     [TestCategory("ChangeFeed")]
+    [DoNotParallelize]
     public class GremlinSmokeTests : BaseChangeFeedClientHelper
     {
         private Container Container;
diff --git a/Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/ChangeFeed/DocumentServiceLeaseManagerCosmosTests.cs b/Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/ChangeFeed/DocumentServiceLeaseManagerCosmosTests.cs
@@ -18,6 +18,7 @@ namespace Microsoft.Azure.Cosmos.ChangeFeed.Tests
 
     [TestClass]
     [TestCategory("ChangeFeed")]
+    [DoNotParallelize]
     public class DocumentServiceLeaseManagerCosmosTests
     {
         [TestInitialize]

Original file line number	Diff line number	Diff line change
`@@ -12,6 +12,7 @@ namespace Microsoft.Azure.Cosmos.SDK.EmulatorTests.ChangeFeed`
`12`	`12`
`13`	`13`	`[TestClass]`
`14`	`14`	`[TestCategory("ChangeFeed")]`
	`15`	`+ [DoNotParallelize]`
`15`	`16`	`public class GremlinSmokeTests : BaseChangeFeedClientHelper`
`16`	`17`	`{`
`17`	`18`	`private Container Container;`
Original file line number	Diff line number	Diff line change
`@@ -18,6 +18,7 @@ namespace Microsoft.Azure.Cosmos.ChangeFeed.Tests`
`18`	`18`
`19`	`19`	`[TestClass]`
`20`	`20`	`[TestCategory("ChangeFeed")]`
	`21`	`+ [DoNotParallelize]`
`21`	`22`	`public class DocumentServiceLeaseManagerCosmosTests`
`22`	`23`	`{`
`23`	`24`	`[TestInitialize]`