Add tests from dotnet#49314

Author: jjonescz

test/dotnet.Tests/CommandTests/Package/Remove/GivenDotnetPackageRemove.cs

@@ -0,0 +1,82 @@
+
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace Microsoft.DotNet.Cli.Package.Remove.Tests;
+
+public sealed class GivenDotnetPackageRemove(ITestOutputHelper log) : SdkTest(log)
+{
+    [Fact]
+    public void WhenPackageIsRemovedWithoutProjectArgument()
+    {
+        var projectDirectory = _testAssetsManager
+            .CopyTestAsset("TestAppSimple")
+            .WithSource().Path;
+
+        const string packageName = "Newtonsoft.Json";
+        new DotnetCommand(Log)
+            .WithWorkingDirectory(projectDirectory)
+            .Execute("add", "package", packageName)
+            .Should().Pass();
+
+        // Test the new 'dotnet package remove' command without specifying project
+        new DotnetCommand(Log)
+            .WithWorkingDirectory(projectDirectory)
+            .Execute("package", "remove", packageName)
+            .Should().Pass()
+            .And.HaveStdOutContaining($"Removing PackageReference for package '{packageName}' from project '{projectDirectory + Path.DirectorySeparatorChar}TestAppSimple.csproj'.")
+            .And.NotHaveStdErr();
+    }
+
+    [Fact]
+    public void WhenPackageIsRemovedWithProjectOption()
+    {
+        var projectDirectory = _testAssetsManager
+            .CopyTestAsset("TestAppSimple")
+            .WithSource().Path;
+
+        const string packageName = "Newtonsoft.Json";
+        new DotnetCommand(Log)
+            .WithWorkingDirectory(projectDirectory)
+            .Execute("add", "package", packageName)
+            .Should().Pass();
+
+        // Test the new 'dotnet package remove' command with --project option
+        new DotnetCommand(Log)
+            .WithWorkingDirectory(projectDirectory)
+            .Execute("package", "remove", packageName, "--project", "TestAppSimple.csproj")
+            .Should().Pass()
+            .And.HaveStdOutContaining($"Removing PackageReference for package '{packageName}' from project 'TestAppSimple.csproj'.")
+            .And.NotHaveStdErr();
+    }
+
+    [Fact]
+    public void WhenNoPackageIsPassedCommandFails()
+    {
+        var projectDirectory = _testAssetsManager
+            .CopyTestAsset("TestAppSimple")
+            .WithSource()
+            .Path;
+
+        new DotnetCommand(Log)
+            .WithWorkingDirectory(projectDirectory)
+            .Execute("package", "remove")
+            .Should()
+            .Fail();
+    }
+
+    [Fact]
+    public void WhenMultiplePackagesArePassedCommandFails()
+    {
+        var projectDirectory = _testAssetsManager
+            .CopyTestAsset("TestAppSimple")
+            .WithSource()
+            .Path;
+
+        new DotnetCommand(Log)
+            .WithWorkingDirectory(projectDirectory)
+            .Execute("package", "remove", "package1", "package2")
+            .Should()
+            .Fail();
+    }
+}