Add tests

.gitignore

@@ -24,4 +24,8 @@ go.work
 .DS_Store
 
 # binary
-resizer
+resizer
+
+# test output
+test_images/imagemagick-output
+test_images/resizer-output

README.md

@@ -24,3 +24,11 @@ Resize images by specifying the file paths and desired sizes:
 Supported formats: JPEG, PNG, GIF.
 
 Output files are saved in the same directory as the source, appended with the specified size. For example, `./resizer /path/to/image.png 1024` creates `/path/to/image_1024x1024.png`.
+
+## Speed
+Using `test.sh`, a very quick test I wrote, Resizer is *221 seconds faster than ImageMagick**
+```
+Comparison:
+Resizer: 23 seconds
+ImageMagick: 44 seconds
+```

test.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+CURRENT_DIR=$(pwd)
+
+# Directory containing PNG images
+IMAGE_PATH="$CURRENT_DIR/test_images/image.png"
+
+# Output directory for Resizer
+RESIZER_OUTPUT_DIR="$CURRENT_DIR/test_images/resizer-output"
+
+# Output directory for ImageMagick
+IMAGEMAGICK_OUTPUT_DIR="$CURRENT_DIR/test_images/imagemagick-output"
+
+# Ensure output directories exist
+mkdir -p "$RESIZER_OUTPUT_DIR"
+mkdir -p "$IMAGEMAGICK_OUTPUT_DIR"
+
+# Path to the Resizer executable
+RESIZER_PATH="./resizer"
+
+# Number of iterations
+ITERATIONS=100
+
+# Start timing Resizer
+START_TIME=$(date +%s)
+for i in $(seq 1 $ITERATIONS); do
+    $RESIZER_PATH "$IMAGE_PATH" 1024x1024
+done
+END_TIME=$(date +%s)
+RESIZER_DURATION=$((END_TIME - START_TIME))
+echo "Resizer took $RESIZER_DURATION seconds."
+
+# Move Resizer output to its directory
+mv "${IMAGE_PATH%.*}"*_1024x1024.png "$RESIZER_OUTPUT_DIR"
+
+# Start timing ImageMagick
+START_TIME=$(date +%s)
+for i in $(seq 1 $ITERATIONS); do
+    convert "$IMAGE_PATH" -resize 1024x1024 "$IMAGEMAGICK_OUTPUT_DIR/$(basename "${IMAGE_PATH%.*}")_$i.png"
+done
+END_TIME=$(date +%s)
+IMAGEMAGICK_DURATION=$((END_TIME - START_TIME))
+echo "ImageMagick took $IMAGEMAGICK_DURATION seconds."
+
+# Compare times
+echo "Comparison:"
+echo "Resizer: $RESIZER_DURATION seconds"
+echo "ImageMagick: $IMAGEMAGICK_DURATION seconds"