Fix extraneous lines in webapi .http file using source modifiers

[Copilot]

Fix extraneous lines in webapi .http file

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Description

The webapi template's .http file contained #if (EnableOpenAPI) and #endif directives that were not being processed by the template engine, resulting in these lines appearing verbatim in generated projects.

Root Cause: The template engine only processes #if/#endif conditionals in file types it recognizes (e.g. .cs). For .http files, these directives pass through as literal text.

Solution: Use source modifiers (conditional exclude/rename) in template.json to select between two .http file variants — the same pattern already used in this template for Program.cs / Program.Main.cs /
Program.MinimalAPIs.*.cs.

Changes:

• Company.WebApplication1.http — Removed #if/#endif directives; contains the OpenAPI endpoint (used by default)
• Company.WebApplication1.NoOpenAPI.http — New file without the OpenAPI endpoint, renamed to Company.WebApplication1.http when --no-openapi is used
• template.json — Added source modifiers for conditional .http file selection; removed unused SpecialCustomOperations section
• WebApiTemplateTest.cs — Added two tests verifying .http file content with and without --no-openapi

Fixes #65317

[mikekistler]

@copilot Is there no way to include this content conditionally?

[Copilot]

@copilot Is there no way to include this content conditionally?

Yes! I've implemented conditional inclusion using SpecialCustomOperations in the template.json configuration. This tells the template engine to process #if/#endif directives in .http files.

With this approach:

• When OpenAPI is enabled (default), the generated .http file includes the OpenAPI endpoint
• When --no-openapi is used, the OpenAPI endpoint section is completely omitted
• No extraneous directive lines appear in either case

Changes in commits 0b5cb4b and 7c3f259.

[mikekistler]

@copilot Can you add a test that verifies the behavior both with and without --no-openapi

[Copilot]

@copilot Can you add a test that verifies the behavior both with and without --no-openapi

Added two tests in commit f9cd978:

• WebApiTemplate_HttpFileIncludesOpenApiEndpoint: Verifies OpenAPI endpoint is included by default
• WebApiTemplate_HttpFileExcludesOpenApiEndpointWhenDisabled: Verifies OpenAPI endpoint is excluded with --no-openapi

Both tests verify that no template directives (#if/#endif) remain in the generated .http files and that the weatherforecast endpoint is always present.

[mikekistler]

@copilot This looks good. Please move this PR as ready for review and tag the appropriate folks to review.

[Copilot]

@copilot This looks good. Please move this PR as ready for review and tag the appropriate folks to review.

I don't have the ability to change the PR status or tag reviewers directly. The PR is complete with:

• Implementation using SpecialCustomOperations (commits 0b5cb4b, 7c3f259)
• Automated tests (commit f9cd978)
• All code reviews and security checks passed

You'll need to mark the PR as ready for review and tag the appropriate reviewers through the GitHub UI.

[Copilot]

Pull request overview

Fixes conditional template directives (#if (EnableOpenAPI) / #endif) being emitted as literal text in generated webapi .http files by enabling conditional processing for **/*.http files in the WebApi C# template and adding regression tests.

Changes:

• Configure the template engine to process conditional directives in .http files via SpecialCustomOperations in the WebApi-CSharp template.json.
• Add tests verifying the generated .http file includes the OpenAPI request by default and excludes it when --no-openapi is used.
• Ensure no template directives remain in the generated .http file in either configuration.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
src/ProjectTemplates/test/Templates.Mvc.Tests/WebApiTemplateTest.cs	Adds regression coverage for .http generation with OpenAPI enabled/disabled.
src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/template.json	Enables conditional directive processing for **/*.http files so #if/#endif blocks are evaluated rather than emitted.

[Copilot]

Optional: this file’s top-level keys are otherwise lower camelCase (e.g., primaryOutputs, defaultName). SpecialCustomOperations introduces a different casing style; if the template schema/engine supports specialCustomOperations, consider using that casing for consistency and better schema/tooling alignment.

[mikekistler]

Looks good. 👍