138 lines
3.8 KiB
Bash
Executable File
138 lines
3.8 KiB
Bash
Executable File
#!/bin/bash
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# Tester for precise_timing exercise
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# Tests timing functions accuracy
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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NC='\033[0m'
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EXERCISE="precise_timing"
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PASSED=0
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FAILED=0
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echo "========================================"
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echo "Testing: $EXERCISE"
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echo "========================================"
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if [ ! -f "./$EXERCISE" ]; then
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echo -e "${RED}✗ Executable ./$EXERCISE not found${NC}"
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echo "Please compile: gcc -Wall -Wextra -Werror -pthread precise_timing.c -o precise_timing"
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exit 1
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fi
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# Test 1: Basic execution
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echo -n "Test 1: Program runs successfully... "
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OUTPUT=$(timeout 5 ./$EXERCISE 2>&1)
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EXIT_CODE=$?
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if [ $EXIT_CODE -eq 0 ]; then
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echo -e "${GREEN}✓ PASSED${NC}"
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((PASSED++))
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else
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echo -e "${RED}✗ FAILED (timeout or crash)${NC}"
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((FAILED++))
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fi
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# Test 2: Check if time difference is approximately 100ms
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echo -n "Test 2: Sleep precision (~100ms)... "
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OUTPUT=$(timeout 5 ./$EXERCISE 2>&1)
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# Extract number that should be around 100
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TIME_DIFF=$(echo "$OUTPUT" | grep -oP "\d+" | tail -1)
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if [ -n "$TIME_DIFF" ]; then
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# Allow 5ms margin of error (95-105ms is acceptable)
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if [ "$TIME_DIFF" -ge 95 ] && [ "$TIME_DIFF" -le 105 ]; then
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echo -e "${GREEN}✓ PASSED${NC} (measured: ${TIME_DIFF}ms)"
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((PASSED++))
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elif [ "$TIME_DIFF" -ge 90 ] && [ "$TIME_DIFF" -le 110 ]; then
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echo -e "${YELLOW}⚠ PARTIAL${NC} (measured: ${TIME_DIFF}ms, acceptable but not ideal)"
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((PASSED++))
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else
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echo -e "${RED}✗ FAILED${NC}"
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echo "Expected ~100ms, got: ${TIME_DIFF}ms"
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echo "Output: $OUTPUT"
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((FAILED++))
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fi
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else
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echo -e "${RED}✗ FAILED${NC}"
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echo "Could not extract time difference from output"
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echo "Output: $OUTPUT"
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((FAILED++))
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fi
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# Test 3: Consistency across multiple runs
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echo -n "Test 3: Timing consistency (5 runs)... "
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CONSISTENT=true
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TOTAL=0
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COUNT=0
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for i in {1..5}; do
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OUTPUT=$(timeout 5 ./$EXERCISE 2>&1)
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TIME_DIFF=$(echo "$OUTPUT" | grep -oP "\d+" | tail -1)
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if [ -n "$TIME_DIFF" ]; then
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TOTAL=$((TOTAL + TIME_DIFF))
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COUNT=$((COUNT + 1))
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if [ "$TIME_DIFF" -lt 90 ] || [ "$TIME_DIFF" -gt 110 ]; then
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CONSISTENT=false
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fi
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fi
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done
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if [ "$CONSISTENT" = true ] && [ "$COUNT" -eq 5 ]; then
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AVG=$((TOTAL / COUNT))
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echo -e "${GREEN}✓ PASSED${NC} (avg: ${AVG}ms)"
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((PASSED++))
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else
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echo -e "${RED}✗ FAILED${NC}"
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if [ "$COUNT" -eq 5 ]; then
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AVG=$((TOTAL / COUNT))
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echo "Timing inconsistent across runs (avg: ${AVG}ms)"
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else
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echo "Some runs failed to complete"
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fi
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((FAILED++))
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fi
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# Test 4: Check output format
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echo -n "Test 4: Output format check... "
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OUTPUT=$(timeout 5 ./$EXERCISE 2>&1)
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if echo "$OUTPUT" | grep -qiE "(diff|difference|elapsed|time|ms)"; then
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echo -e "${GREEN}✓ PASSED${NC}"
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((PASSED++))
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else
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echo -e "${RED}✗ FAILED${NC}"
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echo "Program should clearly indicate the time difference"
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echo "Output: $OUTPUT"
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((FAILED++))
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fi
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# Test 5: Memory leak check
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if command -v valgrind &> /dev/null; then
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echo -n "Test 5: Memory leak check... "
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VALGRIND_OUTPUT=$(valgrind --leak-check=full --error-exitcode=42 ./$EXERCISE 2>&1)
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if [ $? -ne 42 ]; then
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echo -e "${GREEN}✓ PASSED${NC}"
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((PASSED++))
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else
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echo -e "${RED}✗ FAILED${NC}"
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echo "Memory leaks detected!"
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((FAILED++))
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fi
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else
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echo -e "${YELLOW}⊘ Test 5: Valgrind not installed, skipping${NC}"
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fi
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# Summary
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echo "========================================"
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echo -e "Results: ${GREEN}$PASSED passed${NC}, ${RED}$FAILED failed${NC}"
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echo "========================================"
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echo ""
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echo "Note: Timing precision is crucial for Philosophers project"
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echo "Your sleep function should be accurate within ±5ms"
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[ $FAILED -eq 0 ] && exit 0 || exit 1
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