Apply check_vector() to evaluated value

[hadley]

No description provided.

[claude]

Claude finished @hadley's task —— View job

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Reviewing PR: Apply check_vector() to evaluated value

• Read and analyze the modified file
• Check for potential bugs or issues
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Review Findings

The changes look correct. The PR fixes a bug where check_vector() was being called on the unevaluated expressions (object and expected) instead of their evaluated values (act$val and exp$val).

Key improvements:

• expect_contains() and expect_in() now properly validate the evaluated values
• Consistent with expect_setequal() which already had this correct pattern (lines 31-32)
• check_vector() function signature simplified by removing caller_arg(x) default

The fix ensures error messages will correctly identify the problematic argument by passing explicit error_arg parameters.

LGTM