Cleaning and extract image comparison

CONTRIBUTING.md

@@ -20,7 +20,7 @@ Create a feature branch and start improving:
 % git checkout -b my-feature-branch
 ```
 
-HEAD-based development is prefered, which means all changes are applied
+HEAD-based development is preferred, which means all changes are applied
 directly on top of master.
 
 ### Step 3: Commit

README.md

@@ -9,7 +9,7 @@ Selenium Shutterbug is a utility library written in Java for making screenshots
 
 ## Code Example
 
-Screenhot of the page with scrolling (for Chrome to make screenshot of the whole page but not viewport only):
+Screenshot of the page with scrolling (for Chrome to make screenshot of the whole page but not viewport only):
 ```
 Shutterbug.shootPage(driver, ScrollStrategy.BOTH_DIRECTIONS).save("C:\\testing\\screenshots\\");
 ```

pom.xml

@@ -51,6 +51,11 @@
             <artifactId>commons-io</artifactId>
             <version>2.6</version>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.8</version>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/com/assertthat/selenium_shutterbug/core/ElementSnapshot.java

@@ -9,7 +9,6 @@
 import com.assertthat.selenium_shutterbug.utils.web.Coordinates;
 import com.assertthat.selenium_shutterbug.utils.web.ElementOutsideViewportException;
 import org.openqa.selenium.WebDriver;
-import org.openqa.selenium.WebElement;
 
 import java.awt.image.BufferedImage;
 import java.awt.image.RasterFormatException;

src/main/java/com/assertthat/selenium_shutterbug/core/PageSnapshot.java

@@ -5,9 +5,9 @@
 
 package com.assertthat.selenium_shutterbug.core;
 
-import com.assertthat.selenium_shutterbug.utils.web.ElementOutsideViewportException;
 import com.assertthat.selenium_shutterbug.utils.image.ImageProcessor;
 import com.assertthat.selenium_shutterbug.utils.web.Coordinates;
+import com.assertthat.selenium_shutterbug.utils.web.ElementOutsideViewportException;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.WebElement;
 

src/main/java/com/assertthat/selenium_shutterbug/core/Snapshot.java

@@ -69,7 +69,7 @@ public T withTitle(String title) {
      * @return instance of type Snapshot
      */
     public T withThumbnail(String path, String name, double scale) {
-        File thumbnailFile = new File(path.toString(), name);
+        File thumbnailFile = new File(path, name);
         if(!Files.exists(Paths.get(path))) {
             thumbnailFile.mkdirs();
         }
@@ -90,15 +90,12 @@ public T withThumbnail(String path, String name, double scale) {
      * @return instance of type Snapshot
      */
     public T withCroppedThumbnail(String path, String name, double scale,  double cropWidth, double cropHeight) {
-        File thumbnailFile = new File(path.toString(), name);
-        if(!Files.exists(Paths.get(path))) {
-            thumbnailFile.mkdirs();
-        }
+        File thumbnailFile = getFile(path, name);
         thumbnailImage=ImageProcessor.cropAndScale(image,scale, cropWidth, cropHeight);
         FileUtil.writeImage(thumbnailImage, EXTENSION, thumbnailFile);
         return self();
     }
-    
+
     /**
      * Generate cropped thumbnail of the original screenshot.
      * Will save different thumbnails depends on when it was called in the chain.
@@ -111,15 +108,27 @@ public T withCroppedThumbnail(String path, String name, double scale,  double cr
      * @return instance of type Snapshot
      */
     public T withCroppedThumbnail(String path, String name, double scale,  int maxWidth, int maxHeight) {
-        File thumbnailFile = new File(path.toString(), name);
-        if(!Files.exists(Paths.get(path))) {
-            thumbnailFile.mkdirs();
-        }
+        File thumbnailFile = getFile(path, name);
         thumbnailImage=ImageProcessor.cropAndScale(image,scale, maxWidth, maxHeight);
         FileUtil.writeImage(thumbnailImage, EXTENSION, thumbnailFile);
         return self();
     }
-
+
+    /**
+     * Generate file for cropped thumbnail of the original screenshot.
+     *
+     * @param path to save thumbnail image to
+     * @param name of the resulting image
+     * @return instance of type File
+     */
+    private File getFile(String path, String name) {
+        File thumbnailFile = new File(path, name);
+        if (!Files.exists(Paths.get(path))) {
+            thumbnailFile.mkdirs();
+        }
+        return thumbnailFile;
+    }
+
     /**
      * Generate cropped thumbnail of the original screenshot.
      * Will save different thumbnails depends on when it was called in the chain.

src/main/java/com/assertthat/selenium_shutterbug/utils/file/FileUtil.java

@@ -24,7 +24,7 @@ public static String getJsScript(String filePath) {
         try {
             InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(filePath);
             if (is == null) {
-                // This is needed to load the files in an OSGI enviroment when enclosed in a bundle
+                // This is needed to load the files in an OSGI environment when enclosed in a bundle
                 is = FileUtil.class.getClassLoader().getResourceAsStream(filePath);
             }
             // if the input stream is still null, this will avoid a non descriptive null pointer exception

src/main/java/com/assertthat/selenium_shutterbug/utils/file/UnableSaveSnapshotException.java

@@ -5,8 +5,6 @@
 
 package com.assertthat.selenium_shutterbug.utils.file;
 
-import org.openqa.selenium.WebDriverException;
-
 /**
  * Created by Glib_Briia on 17/06/2016.
  */