Add operation configuration types: resize, convert, compress, metadata, watermark, rename

All 11 operation tests passing.

pixstrip-core/tests/operations_tests.rs

@@ -0,0 +1,111 @@
+use pixstrip_core::operations::*;
+use pixstrip_core::types::*;
+
+#[test]
+fn resize_config_width_only() {
+    let config = ResizeConfig::ByWidth(1200);
+    assert_eq!(
+        config.target_for(Dimensions { width: 4000, height: 3000 }),
+        Dimensions { width: 1200, height: 900 }
+    );
+}
+
+#[test]
+fn resize_config_fit_in_box() {
+    let config = ResizeConfig::FitInBox {
+        max: Dimensions { width: 1920, height: 1080 },
+        allow_upscale: false,
+    };
+    let result = config.target_for(Dimensions { width: 4000, height: 3000 });
+    assert_eq!(result.width, 1440);
+    assert_eq!(result.height, 1080);
+}
+
+#[test]
+fn resize_config_exact() {
+    let config = ResizeConfig::Exact(Dimensions { width: 1080, height: 1080 });
+    assert_eq!(
+        config.target_for(Dimensions { width: 4000, height: 3000 }),
+        Dimensions { width: 1080, height: 1080 }
+    );
+}
+
+#[test]
+fn metadata_config_strip_all() {
+    let config = MetadataConfig::StripAll;
+    assert!(config.should_strip_gps());
+    assert!(config.should_strip_camera());
+    assert!(config.should_strip_copyright());
+}
+
+#[test]
+fn metadata_config_privacy() {
+    let config = MetadataConfig::Privacy;
+    assert!(config.should_strip_gps());
+    assert!(config.should_strip_camera());
+    assert!(!config.should_strip_copyright());
+}
+
+#[test]
+fn metadata_config_keep_all() {
+    let config = MetadataConfig::KeepAll;
+    assert!(!config.should_strip_gps());
+    assert!(!config.should_strip_camera());
+    assert!(!config.should_strip_copyright());
+}
+
+#[test]
+fn convert_config_single_format() {
+    let config = ConvertConfig::SingleFormat(ImageFormat::WebP);
+    assert_eq!(config.output_format(ImageFormat::Jpeg), ImageFormat::WebP);
+    assert_eq!(config.output_format(ImageFormat::Png), ImageFormat::WebP);
+}
+
+#[test]
+fn convert_config_keep_original() {
+    let config = ConvertConfig::KeepOriginal;
+    assert_eq!(config.output_format(ImageFormat::Jpeg), ImageFormat::Jpeg);
+    assert_eq!(config.output_format(ImageFormat::Png), ImageFormat::Png);
+}
+
+#[test]
+fn watermark_position_all_nine() {
+    let positions = [
+        WatermarkPosition::TopLeft,
+        WatermarkPosition::TopCenter,
+        WatermarkPosition::TopRight,
+        WatermarkPosition::MiddleLeft,
+        WatermarkPosition::Center,
+        WatermarkPosition::MiddleRight,
+        WatermarkPosition::BottomLeft,
+        WatermarkPosition::BottomCenter,
+        WatermarkPosition::BottomRight,
+    ];
+    assert_eq!(positions.len(), 9);
+}
+
+#[test]
+fn rename_config_simple_template() {
+    let config = RenameConfig {
+        prefix: "blog_".into(),
+        suffix: String::new(),
+        counter_start: 1,
+        counter_padding: 3,
+        template: None,
+    };
+    let result = config.apply_simple("sunset", "jpg", 1);
+    assert_eq!(result, "blog_sunset_001.jpg");
+}
+
+#[test]
+fn rename_config_with_suffix() {
+    let config = RenameConfig {
+        prefix: String::new(),
+        suffix: "_web".into(),
+        counter_start: 1,
+        counter_padding: 2,
+        template: None,
+    };
+    let result = config.apply_simple("photo", "webp", 5);
+    assert_eq!(result, "photo_web_05.webp");
+}