[test-improver] Improve tests for main package

[github-actions]

Test Improvements: main_test.go

File Analyzed

• Test File: main_test.go
• Package: main
• Lines of Code: 119 → 257 (+116%)

Improvements Made

1. Better Testing Patterns

• ✅ Added bound asserters (assert := assert.New(t)) to all 4 test functions
• ✅ Fixed mixed assertion style - replaced assert.True(t, strings.Contains(...)) with assert.Contains(...)
• ✅ Removed unused strings import
• ✅ More concise and readable assertion code

2. Increased Coverage

• ✅ Added test for long commit hash handling (26+ character hashes)
• ✅ Added test for special characters in version strings (v1.0.0-beta+build.123)
• ✅ Added test for whitespace handling in metadata fields
• ✅ Added test for partial metadata (only commit, only build date)
• ✅ Added test for exact output format verification
• ✅ Created 2 new test functions: TestBuildVersionString_CommitHashShortening, TestBuildVersionString_OutputFormat
• Previous Test Cases: 5 scenarios in 2 functions
• New Test Cases: 14 scenarios in 4 functions
• Improvement: +180% test scenarios, +100% test functions

3. Cleaner & More Stable Tests

• ✅ Added comment headers to organize test cases by scenario type
• ✅ Better organization with "Normal scenarios" and "Edge case" sections
• ✅ Improved inline documentation
• ✅ Table-driven structure makes adding new cases trivial
• ✅ All tests remain deterministic and isolated

Test Execution

All improvements maintain backward compatibility and follow existing patterns:

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/assert"

Key Changes:

• Removed unused import
• Added bound asserters for cleaner code
• Expanded test coverage with 5 new edge case scenarios
• Added 2 new focused test functions for specific behaviors

Why These Changes?

The original main_test.go was already well-structured with table-driven tests and testify. However, there were opportunities for improvement:

1. Inconsistent testify usage: Mixed assert.True(strings.Contains(...)) with proper testify assertion methods
2. Missing bound asserters: Verbose assert.X(t, ...) calls could be cleaner with assert.X(...)
3. Limited edge case coverage: Only tested basic scenarios - missing whitespace, special characters, and partial metadata combinations
4. No output format verification: Tested individual parts but not exact output format

These improvements make the tests:

• More comprehensive with edge case coverage
• More consistent with 100% idiomatic testify usage
• More maintainable with better organization and comments
• More reliable with deterministic test cases

The test file is now more robust and will catch potential issues with:

• Long commit hashes in different contexts
• Special characters in version metadata (semver prerelease/build)
• Whitespace handling edge cases
• Partial metadata scenarios (dev with commit or date only)
• Exact output format validation

---

Generated by Test Improver Workflow
Focuses on better testify patterns, increased coverage, and more stable tests

AI generated by Test Improver

[github-actions]

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[Copilot]

Pull request overview

This PR improves test coverage and quality for the main_test.go file, which tests the buildVersionString() function that constructs version strings with build metadata. The improvements focus on adopting consistent testify patterns, expanding edge case coverage, and better organizing test scenarios.

Changes:

• Refactored all tests to use bound asserters (assert.New(t)) for cleaner, more idiomatic testify usage
• Added 7 new test scenarios covering edge cases: long commit hashes, special characters, whitespace handling, and partial metadata combinations
• Added 2 new focused test functions to verify commit hash handling and exact output format
• Improved test organization with clarifying comments and better documentation

Comments suppressed due to low confidence (1)

main_test.go:58

• The comment "long commit hash not truncated by buildVersionString" on line 58 is technically accurate but potentially misleading. The buildVersionString function DOES truncate commit hashes, but only when they come from the VCS fallback path (debug.ReadBuildInfo). When GitCommit is set directly via ldflags (as in this test), the hash is used as-is regardless of length. Consider clarifying this to: "long commit hash used as-is when GitCommit is set directly" to avoid confusion about the function's behavior.

			name:          "long commit hash not truncated by buildVersionString",

---

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[Copilot]

The test function name TestBuildVersionString_CommitHashShortening is misleading. This test actually verifies that commit hash shortening does NOT occur when GitCommit is set directly via ldflags. The shortening only happens in the VCS fallback path, which this test explicitly avoids. Consider renaming to TestBuildVersionString_NoCommitHashShorteningWhenSetDirectly or TestBuildVersionString_LongCommitHashPreserved to better reflect what the test validates.

This issue also appears on line 58 of the same file.

[Copilot]

The expectedOutput field for the "only dev" test case (line 225) is never actually verified due to the early return on line 251. This test case is handled specially because buildVersionString() may fall back to VCS info when all inputs are empty, making the exact output non-deterministic. Consider either: (1) removing the expectedOutput field from this test case since it's not used, or (2) adding a comment explaining why this field is present but not checked.

Suggested change

	name: "only dev",
	version: "",
	gitCommit: "",
	buildDate: "",
	expectedOutput: "dev",
	name: "only dev",
	version: "",
	gitCommit: "",
	buildDate: "",