Fix DNX command casting error with DnxCommandDefinition

[Copilot]

The dnx command throws a casting exception when executing tools:

Unable to cast object of type 'Microsoft.DotNet.Cli.Commands.Dnx.DnxCommandDefinition' 
to type 'Microsoft.DotNet.Cli.Commands.Tool.Execute.ToolExecuteCommandDefinition'.

Changes

ToolExecuteCommand was parameterized with CommandBase<ToolExecuteCommandDefinition>, but DnxCommandParser creates a parse result containing DnxCommandDefinition. Both types inherit from ToolExecuteCommandDefinitionBase, which defines all arguments/options the command uses.

Changed ToolExecuteCommand to use the base class:

-internal sealed class ToolExecuteCommand : CommandBase<ToolExecuteCommandDefinition>
+internal sealed class ToolExecuteCommand : CommandBase<ToolExecuteCommandDefinitionBase>

This allows the command to work with both DnxCommandDefinition (dnx) and ToolExecuteCommandDefinition (tool execute/exec).

Tests Added

Added parameterized tests to ensure both dnx and exec commands work correctly:

• Converted InstallAndRunToolFromAnyRid from [Fact] to [Theory] with test cases for both "exec" and "dnx" commands
• Converted InstallAndRunToolFromAnyRidWhenOtherRidsArePresentButIncompatible from [Fact] to [Theory] with test cases for both "exec" and "dnx" commands

These tests verify that both command variants function correctly with the same tool execution logic.

Original prompt

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This section details on the original issue you should resolve

<issue_title>DNX: "Unable to cast object of type 'Microsoft.DotNet.Cli.Commands.Dnx.DnxCommandDefinition ...' error while running dotnet tool</issue_title>
<issue_description>With SDK 10.0.200-preview.0.26102.104, the dnx command fails to run a dotnet tool with the following error:

C:\>dotnet --version
10.0.200-preview.0.26102.104

C:\>dnx dotnetsay
Unhandled exception: Unable to cast object of type 'Microsoft.DotNet.Cli.Commands.Dnx.DnxCommandDefinition' to type 'Microsoft.DotNet.Cli.Commands.Tool.Execute.ToolExecuteCommandDefinition'.

</issue_description>

Comments on the Issue (you are @copilot in this section)

@anvillan FYI @tlmii

• Fixes DNX: "Unable to cast object of type 'Microsoft.DotNet.Cli.Commands.Dnx.DnxCommandDefinition ...' error while running dotnet tool #52819

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[Copilot]

Pull request overview

This PR fixes a casting exception in the dnx command by changing ToolExecuteCommand to use the base class ToolExecuteCommandDefinitionBase instead of the concrete ToolExecuteCommandDefinition class.

Changes:

• Modified ToolExecuteCommand to accept ToolExecuteCommandDefinitionBase instead of ToolExecuteCommandDefinition, allowing it to work with both DnxCommandDefinition and ToolExecuteCommandDefinition

[baronfel]

@copilot there should be tests for the tool exec command - these tests should be updated to be parameterized to make sure that dnx works as well.

[Copilot]

@copilot there should be tests for the tool exec command - these tests should be updated to be parameterized to make sure that dnx works as well.

Added parameterized tests for both dnx and exec commands in cb85019. The tests InstallAndRunToolFromAnyRid and InstallAndRunToolFromAnyRidWhenOtherRidsArePresentButIncompatible now verify that both commands work correctly.

[marcpopMSFT]

Tested the fix in a codespace and looks good to me. @tmat I think #52162 broke this. What are the likelihood that there are other breaks from this refactor? We map dnx to tool exec so do we have any other similar mappings we should double check work? I don't think so within the workload or tooling space.

[tmat]

The only reasonable way is to check if we have code coverage.