fix: Using run -- graph command

[levkohimins]

Description

Fixes #3947.

TODOs

Read the Gruntwork contribution guidelines.

• Update the docs.
• Run the relevant tests successfully, including pre-commit checks.
• Ensure any 3rd party code adheres with our license policy or delete this line if its not applicable.
• Include release notes. If this PR is backward incompatible, include a migration guide.

Release Notes (draft)

Added / Removed / Updated [X].

Migration Guide

Summary by CodeRabbit

• Refactor

  • Streamlined command evaluation logic for more efficient processing.

• Tests

  • Added a test to verify that invoking the graph command produces the expected output.

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Name	Status	Preview	Comments	Updated (UTC)
terragrunt-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 3, 2025 2:33pm

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

The pull request introduces a constant to replace the hardcoded application name and refactors command handling in the setup function using boolean conditions and fallthrough logic. Additionally, a new test case is added to verify the command output when "--", "graph" is provided, with simplified assertion logic to check for the expected output.

Changes

File(s)	Change Summary
cli/app.go	- Added const AppName = "terragrunt". - Updated NewApp to use the constant. - Refactored the initialSetup function to evaluate command names via boolean conditions and fallthrough.
test/integration_test.go	- Added a new test case in TestTerraformCommandCliArgs to check for the "--", "graph" arguments. - Simplified output verification by concatenating stdout and stderr.

Sequence Diagram(s)

sequenceDiagram
    participant User as CLI User
    participant App as Application
    participant Setup as initialSetup
    User->>App: Start application
    App->>Setup: Process command input
    Setup->>Setup: Evaluate command using boolean conditions & fallthrough
    Setup-->>App: Return command routing decision

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Possibly related PRs

• feat: Handling of incorrectly used flag #3901: Updates the NewApp function in cli/app.go with changes similar to the current PR, focusing on command handling and error management.

Suggested reviewers

• denis256
• yhakbar

Poem

In the realm of code so neat and bright,
A constant gleams with a clear, new light.
Commands now flow with graceful ease,
Tested well to always please.
Here's to smooth commits and coding delight!

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📥 Commits

Reviewing files that changed from the base of the PR and between b3d8e5e and 947661a.

📒 Files selected for processing (2)

• cli/app.go (3 hunks)
• test/integration_test.go (2 hunks)

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[yhakbar]

LGTM