Added test cases containing a large in-the-wild image, and two rotated versions

src/detect/linescan.rs

@@ -407,7 +407,7 @@ impl QRFinderPattern {
         }
 
         let module_size: f64 = f64::from(total_size) / 7.0;
-        let max_variance = module_size / 1.5;
+        let max_variance = module_size / 1.6;
 
         if (module_size - f64::from(self.2)).abs() > max_variance {
             return false;

tests/image_tests.rs

@@ -8,6 +8,30 @@ pub fn test_version1_example() {
     );
 }
 
+#[test]
+pub fn test_wild_big_example() {
+    test_image(
+        "tests/images/wild_big.png",
+        vec![Ok(String::from("2810050501011O7KV4V6FDGU"))],
+    );
+}
+
+#[test]
+pub fn test_wild_rotated_1() {
+    test_image(
+        "tests/images/wild_rot_1.jpg",
+        vec![Ok(String::from("2810050501011O7KV4V6FDGU"))],
+    );
+}
+
+#[test]
+pub fn test_wild_rotated_2() {
+    test_image(
+        "tests/images/wild_rot_2.jpg",
+        vec![Ok(String::from("2810050501011O7KV4V6FDGU"))],
+    );
+}
+
 #[test]
 pub fn test_version1_example_no_border() {
     test_image(