77 lines
2.3 KiB
Bash
77 lines
2.3 KiB
Bash
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#!/bin/bash
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# Output Validator SSOT
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# Single Source of Truth for smoke test output validation
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#
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# Box-First principle: Separation of concerns
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# - Extract: Pattern-based extraction (numeric lines, etc.)
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# - Assert: Comparison and failure reporting
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#
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# Fail-Fast principle: Explicit errors with clear messages
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set -e
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# Extract numeric lines from output
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# Usage: extract_numeric_lines N < output.txt
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# Returns: First N lines that match numeric pattern (including negative numbers)
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extract_numeric_lines() {
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local limit="$1"
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if [ -z "$limit" ]; then
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echo "[ERROR] extract_numeric_lines: limit parameter required" >&2
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return 1
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fi
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# Pattern: optional minus, followed by digits
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# Use head to limit output
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grep -E '^-?[0-9]+$' | head -n "$limit" | tr -d '\r'
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}
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# Assert multiline string equality
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# Usage: assert_equals_multiline EXPECTED ACTUAL
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# Returns: 0 if equal, 1 if different (with error message)
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assert_equals_multiline() {
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local expected="$1"
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local actual="$2"
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if [ -z "$expected" ]; then
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echo "[ERROR] assert_equals_multiline: expected parameter required" >&2
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return 1
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fi
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if [ "$actual" = "$expected" ]; then
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return 0
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else
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echo "[FAIL] Output mismatch" >&2
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echo "[EXPECTED]:" >&2
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echo "$expected" >&2
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echo "[ACTUAL]:" >&2
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echo "$actual" >&2
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return 1
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fi
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}
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# Validate numeric output (extract + assert in one step)
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# Usage: validate_numeric_output EXPECTED_LINES EXPECTED_VALUE OUTPUT
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# Returns: 0 if valid, 1 if invalid
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validate_numeric_output() {
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local expected_lines="$1"
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local expected_value="$2"
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local output="$3"
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if [ -z "$expected_lines" ] || [ -z "$expected_value" ]; then
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echo "[ERROR] validate_numeric_output: expected_lines and expected_value required" >&2
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return 1
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fi
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local clean
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clean=$(printf "%s\n" "$output" | extract_numeric_lines "$expected_lines")
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assert_equals_multiline "$expected_value" "$clean"
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}
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# Box-First design notes:
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# 1. extract_numeric_lines: Single Responsibility - extraction only
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# 2. assert_equals_multiline: Single Responsibility - comparison only
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# 3. validate_numeric_output: Composition box - combines extract + assert
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# 4. All functions follow Fail-Fast principle - explicit parameter checks
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# 5. Clear separation of concerns - easy to extend with new patterns
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