pdftract/notes/bf-g6aqi.md

Bead bf-g6aqi: Locate and examine assert_exit_code method implementation

Summary

Located and examined the assert_exit_code method in the pdftract codebase.

Findings

1. Method EXISTS on TestExecutionResult struct

Location: /home/coding/pdftract/tests/encryption_fixtures.rs (lines 267-279)

Method signature:

pub fn assert_exit_code(&self, expected: i32) -> &Self

Implementation:

pub fn assert_exit_code(&self, expected: i32) -> &Self {
    let actual = self.exit_code();
    let context = self.fixture_name.as_deref().unwrap_or("command");
    assert_eq!(
        actual,
        Some(expected),
        "Expected {} to exit with code {}, got {:?}",
        context,
        expected,
        actual
    );
    self
}

Behavior:

• Asserts that the exit code matches an expected value
• Returns &Self for method chaining
• Provides clear error messages with context (fixture name or "command")
• Handles cases where process was terminated by signal (returns None for exit code)

Usage pattern:

result.assert_exit_code(3);  // Exits with code 3 for encryption errors
result.assert_exit_code(0);  // Exits with code 0 for success

2. Method MISSING from ExtractionResult struct

Location: /home/coding/pdftract/crates/pdftract-core/src/extract.rs (line 237)

Struct definition:

#[derive(Debug, Clone, Serialize, Deserialize)]
#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
pub struct ExtractionResult {
    pub fingerprint: String,
    pub pages: Vec<PageResult>,
    pub metadata: ExtractionMetadata,
    pub signatures: Vec<SignatureJson>,
    pub form_fields: Vec<FormFieldJson>,
    pub links: Vec<LinkJson>,
    pub attachments: Vec<AttachmentJson>,
    pub threads: Vec<ThreadJson>,
    #[serde(default)]
    pub javascript_actions: Vec<JavascriptActionJson>,
}

Status: NO impl block exists for ExtractionResult - the assert_exit_code method is NOT implemented on this struct.

3. Other ExtractionResult in CER diff tool

Location: /home/coding/pdftract/crates/pdftract-cer-diff/src/main.rs (lines 13-16)

Purpose: Simple struct for JSON deserialization in CER diff tool

Status: No impl block, no assert_exit_code method (not needed for this use case)

Test Coverage

The TestExecutionResult::assert_exit_code method has comprehensive test coverage:

Passing test (line 762-773):

• test_execution_result_assert_exit_code - Verifies method panics when expected code doesn't match

Failing test (line 775-788):

• test_execution_result_assert_exit_code_failure - Verifies correct panic behavior with expected message

Method chaining test (line 979-996):

• test_execution_result_method_chaining - Demonstrates fluent API usage

Acceptance Criteria Status

• ✅ Location of assert_exit_code method identified
• ✅ Method signature documented
• ✅ Current implementation state known (exists on TestExecutionResult, missing from ExtractionResult)
• ✅ ExtractionResult structure understood

Conclusion

The assert_exit_code method exists on TestExecutionResult (a test helper struct for CLI command execution) but does NOT exist on ExtractionResult (the core PDF extraction result struct). This is the expected state, as ExtractionResult is a data-carrying struct for PDF extraction output and does not need test assertion methods.