Ensure each test has its own file

Since we are using real files and not mocks, each tests needs
its own file or else Travis will try to write multiple files
concurrently and fail.

tests/filters.rs

@@ -89,7 +89,7 @@ fn test_it_converts(input: &Path,
 
 #[test]
 fn filter_0_for_rgba_16() {
-    let input = PathBuf::from("tests/files/rgba_16_should_be_rgba_16.png");
+    let input = PathBuf::from("tests/files/filter_0_for_rgba_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -106,7 +106,7 @@ fn filter_0_for_rgba_16() {
 
 #[test]
 fn filter_1_for_rgba_16() {
-    let input = PathBuf::from("tests/files/rgba_16_should_be_rgba_16.png");
+    let input = PathBuf::from("tests/files/filter_1_for_rgba_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -123,7 +123,7 @@ fn filter_1_for_rgba_16() {
 
 #[test]
 fn filter_2_for_rgba_16() {
-    let input = PathBuf::from("tests/files/rgba_16_should_be_rgba_16.png");
+    let input = PathBuf::from("tests/files/filter_2_for_rgba_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -140,7 +140,7 @@ fn filter_2_for_rgba_16() {
 
 #[test]
 fn filter_3_for_rgba_16() {
-    let input = PathBuf::from("tests/files/rgba_16_should_be_rgba_16.png");
+    let input = PathBuf::from("tests/files/filter_3_for_rgba_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -157,7 +157,7 @@ fn filter_3_for_rgba_16() {
 
 #[test]
 fn filter_4_for_rgba_16() {
-    let input = PathBuf::from("tests/files/rgba_16_should_be_rgba_16.png");
+    let input = PathBuf::from("tests/files/filter_4_for_rgba_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -174,7 +174,7 @@ fn filter_4_for_rgba_16() {
 
 #[test]
 fn filter_5_for_rgba_16() {
-    let input = PathBuf::from("tests/files/rgba_16_should_be_rgba_16.png");
+    let input = PathBuf::from("tests/files/filter_5_for_rgba_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -191,7 +191,7 @@ fn filter_5_for_rgba_16() {
 
 #[test]
 fn filter_0_for_rgba_8() {
-    let input = PathBuf::from("tests/files/rgba_8_should_be_rgba_8.png");
+    let input = PathBuf::from("tests/files/filter_0_for_rgba_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -208,7 +208,7 @@ fn filter_0_for_rgba_8() {
 
 #[test]
 fn filter_1_for_rgba_8() {
-    let input = PathBuf::from("tests/files/rgba_8_should_be_rgba_8.png");
+    let input = PathBuf::from("tests/files/filter_1_for_rgba_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -225,7 +225,7 @@ fn filter_1_for_rgba_8() {
 
 #[test]
 fn filter_2_for_rgba_8() {
-    let input = PathBuf::from("tests/files/rgba_8_should_be_rgba_8.png");
+    let input = PathBuf::from("tests/files/filter_2_for_rgba_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -242,7 +242,7 @@ fn filter_2_for_rgba_8() {
 
 #[test]
 fn filter_3_for_rgba_8() {
-    let input = PathBuf::from("tests/files/rgba_8_should_be_rgba_8.png");
+    let input = PathBuf::from("tests/files/filter_3_for_rgba_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -259,7 +259,7 @@ fn filter_3_for_rgba_8() {
 
 #[test]
 fn filter_4_for_rgba_8() {
-    let input = PathBuf::from("tests/files/rgba_8_should_be_rgba_8.png");
+    let input = PathBuf::from("tests/files/filter_4_for_rgba_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -276,7 +276,7 @@ fn filter_4_for_rgba_8() {
 
 #[test]
 fn filter_5_for_rgba_8() {
-    let input = PathBuf::from("tests/files/rgba_8_should_be_rgba_8.png");
+    let input = PathBuf::from("tests/files/filter_5_for_rgba_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -293,7 +293,7 @@ fn filter_5_for_rgba_8() {
 
 #[test]
 fn filter_0_for_rgb_16() {
-    let input = PathBuf::from("tests/files/rgb_16_should_be_rgb_16.png");
+    let input = PathBuf::from("tests/files/filter_0_for_rgb_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -310,7 +310,7 @@ fn filter_0_for_rgb_16() {
 
 #[test]
 fn filter_1_for_rgb_16() {
-    let input = PathBuf::from("tests/files/rgb_16_should_be_rgb_16.png");
+    let input = PathBuf::from("tests/files/filter_1_for_rgb_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -327,7 +327,7 @@ fn filter_1_for_rgb_16() {
 
 #[test]
 fn filter_2_for_rgb_16() {
-    let input = PathBuf::from("tests/files/rgb_16_should_be_rgb_16.png");
+    let input = PathBuf::from("tests/files/filter_2_for_rgb_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -344,7 +344,7 @@ fn filter_2_for_rgb_16() {
 
 #[test]
 fn filter_3_for_rgb_16() {
-    let input = PathBuf::from("tests/files/rgb_16_should_be_rgb_16.png");
+    let input = PathBuf::from("tests/files/filter_3_for_rgb_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -361,7 +361,7 @@ fn filter_3_for_rgb_16() {
 
 #[test]
 fn filter_4_for_rgb_16() {
-    let input = PathBuf::from("tests/files/rgb_16_should_be_rgb_16.png");
+    let input = PathBuf::from("tests/files/filter_4_for_rgb_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -378,7 +378,7 @@ fn filter_4_for_rgb_16() {
 
 #[test]
 fn filter_5_for_rgb_16() {
-    let input = PathBuf::from("tests/files/rgb_16_should_be_rgb_16.png");
+    let input = PathBuf::from("tests/files/filter_5_for_rgb_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -395,7 +395,7 @@ fn filter_5_for_rgb_16() {
 
 #[test]
 fn filter_0_for_rgb_8() {
-    let input = PathBuf::from("tests/files/rgb_8_should_be_rgb_8.png");
+    let input = PathBuf::from("tests/files/filter_0_for_rgb_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -412,7 +412,7 @@ fn filter_0_for_rgb_8() {
 
 #[test]
 fn filter_1_for_rgb_8() {
-    let input = PathBuf::from("tests/files/rgb_8_should_be_rgb_8.png");
+    let input = PathBuf::from("tests/files/filter_1_for_rgb_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -429,7 +429,7 @@ fn filter_1_for_rgb_8() {
 
 #[test]
 fn filter_2_for_rgb_8() {
-    let input = PathBuf::from("tests/files/rgb_8_should_be_rgb_8.png");
+    let input = PathBuf::from("tests/files/filter_2_for_rgb_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -446,7 +446,7 @@ fn filter_2_for_rgb_8() {
 
 #[test]
 fn filter_3_for_rgb_8() {
-    let input = PathBuf::from("tests/files/rgb_8_should_be_rgb_8.png");
+    let input = PathBuf::from("tests/files/filter_3_for_rgb_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -463,7 +463,7 @@ fn filter_3_for_rgb_8() {
 
 #[test]
 fn filter_4_for_rgb_8() {
-    let input = PathBuf::from("tests/files/rgb_8_should_be_rgb_8.png");
+    let input = PathBuf::from("tests/files/filter_4_for_rgb_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -480,7 +480,7 @@ fn filter_4_for_rgb_8() {
 
 #[test]
 fn filter_5_for_rgb_8() {
-    let input = PathBuf::from("tests/files/rgb_8_should_be_rgb_8.png");
+    let input = PathBuf::from("tests/files/filter_5_for_rgb_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -497,7 +497,7 @@ fn filter_5_for_rgb_8() {
 
 #[test]
 fn filter_0_for_grayscale_alpha_16() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_16_should_be_grayscale_alpha_16.png");
+    let input = PathBuf::from("tests/files/filter_0_for_grayscale_alpha_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -514,7 +514,7 @@ fn filter_0_for_grayscale_alpha_16() {
 
 #[test]
 fn filter_1_for_grayscale_alpha_16() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_16_should_be_grayscale_alpha_16.png");
+    let input = PathBuf::from("tests/files/filter_1_for_grayscale_alpha_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -531,7 +531,7 @@ fn filter_1_for_grayscale_alpha_16() {
 
 #[test]
 fn filter_2_for_grayscale_alpha_16() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_16_should_be_grayscale_alpha_16.png");
+    let input = PathBuf::from("tests/files/filter_2_for_grayscale_alpha_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -548,7 +548,7 @@ fn filter_2_for_grayscale_alpha_16() {
 
 #[test]
 fn filter_3_for_grayscale_alpha_16() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_16_should_be_grayscale_alpha_16.png");
+    let input = PathBuf::from("tests/files/filter_3_for_grayscale_alpha_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -565,7 +565,7 @@ fn filter_3_for_grayscale_alpha_16() {
 
 #[test]
 fn filter_4_for_grayscale_alpha_16() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_16_should_be_grayscale_alpha_16.png");
+    let input = PathBuf::from("tests/files/filter_4_for_grayscale_alpha_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -582,7 +582,7 @@ fn filter_4_for_grayscale_alpha_16() {
 
 #[test]
 fn filter_5_for_grayscale_alpha_16() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_16_should_be_grayscale_alpha_16.png");
+    let input = PathBuf::from("tests/files/filter_5_for_grayscale_alpha_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -599,7 +599,7 @@ fn filter_5_for_grayscale_alpha_16() {
 
 #[test]
 fn filter_0_for_grayscale_alpha_8() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_8_should_be_grayscale_alpha_8.png");
+    let input = PathBuf::from("tests/files/filter_0_for_grayscale_alpha_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -616,7 +616,7 @@ fn filter_0_for_grayscale_alpha_8() {
 
 #[test]
 fn filter_1_for_grayscale_alpha_8() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_8_should_be_grayscale_alpha_8.png");
+    let input = PathBuf::from("tests/files/filter_1_for_grayscale_alpha_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -633,7 +633,7 @@ fn filter_1_for_grayscale_alpha_8() {
 
 #[test]
 fn filter_2_for_grayscale_alpha_8() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_8_should_be_grayscale_alpha_8.png");
+    let input = PathBuf::from("tests/files/filter_2_for_grayscale_alpha_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -650,7 +650,7 @@ fn filter_2_for_grayscale_alpha_8() {
 
 #[test]
 fn filter_3_for_grayscale_alpha_8() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_8_should_be_grayscale_alpha_8.png");
+    let input = PathBuf::from("tests/files/filter_3_for_grayscale_alpha_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -667,7 +667,7 @@ fn filter_3_for_grayscale_alpha_8() {
 
 #[test]
 fn filter_4_for_grayscale_alpha_8() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_8_should_be_grayscale_alpha_8.png");
+    let input = PathBuf::from("tests/files/filter_4_for_grayscale_alpha_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -684,7 +684,7 @@ fn filter_4_for_grayscale_alpha_8() {
 
 #[test]
 fn filter_5_for_grayscale_alpha_8() {
-    let input = PathBuf::from("tests/files/grayscale_alpha_8_should_be_grayscale_alpha_8.png");
+    let input = PathBuf::from("tests/files/filter_5_for_grayscale_alpha_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -701,7 +701,7 @@ fn filter_5_for_grayscale_alpha_8() {
 
 #[test]
 fn filter_0_for_grayscale_16() {
-    let input = PathBuf::from("tests/files/grayscale_16_should_be_grayscale_16.png");
+    let input = PathBuf::from("tests/files/filter_0_for_grayscale_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -718,7 +718,7 @@ fn filter_0_for_grayscale_16() {
 
 #[test]
 fn filter_1_for_grayscale_16() {
-    let input = PathBuf::from("tests/files/grayscale_16_should_be_grayscale_16.png");
+    let input = PathBuf::from("tests/files/filter_1_for_grayscale_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -735,7 +735,7 @@ fn filter_1_for_grayscale_16() {
 
 #[test]
 fn filter_2_for_grayscale_16() {
-    let input = PathBuf::from("tests/files/grayscale_16_should_be_grayscale_16.png");
+    let input = PathBuf::from("tests/files/filter_2_for_grayscale_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -752,7 +752,7 @@ fn filter_2_for_grayscale_16() {
 
 #[test]
 fn filter_3_for_grayscale_16() {
-    let input = PathBuf::from("tests/files/grayscale_16_should_be_grayscale_16.png");
+    let input = PathBuf::from("tests/files/filter_3_for_grayscale_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -769,7 +769,7 @@ fn filter_3_for_grayscale_16() {
 
 #[test]
 fn filter_4_for_grayscale_16() {
-    let input = PathBuf::from("tests/files/grayscale_16_should_be_grayscale_16.png");
+    let input = PathBuf::from("tests/files/filter_4_for_grayscale_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -786,7 +786,7 @@ fn filter_4_for_grayscale_16() {
 
 #[test]
 fn filter_5_for_grayscale_16() {
-    let input = PathBuf::from("tests/files/grayscale_16_should_be_grayscale_16.png");
+    let input = PathBuf::from("tests/files/filter_5_for_grayscale_16.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -803,7 +803,7 @@ fn filter_5_for_grayscale_16() {
 
 #[test]
 fn filter_0_for_grayscale_8() {
-    let input = PathBuf::from("tests/files/grayscale_8_should_be_grayscale_8.png");
+    let input = PathBuf::from("tests/files/filter_0_for_grayscale_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -820,7 +820,7 @@ fn filter_0_for_grayscale_8() {
 
 #[test]
 fn filter_1_for_grayscale_8() {
-    let input = PathBuf::from("tests/files/grayscale_8_should_be_grayscale_8.png");
+    let input = PathBuf::from("tests/files/filter_1_for_grayscale_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -837,7 +837,7 @@ fn filter_1_for_grayscale_8() {
 
 #[test]
 fn filter_2_for_grayscale_8() {
-    let input = PathBuf::from("tests/files/grayscale_8_should_be_grayscale_8.png");
+    let input = PathBuf::from("tests/files/filter_2_for_grayscale_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -854,7 +854,7 @@ fn filter_2_for_grayscale_8() {
 
 #[test]
 fn filter_3_for_grayscale_8() {
-    let input = PathBuf::from("tests/files/grayscale_8_should_be_grayscale_8.png");
+    let input = PathBuf::from("tests/files/filter_3_for_grayscale_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -871,7 +871,7 @@ fn filter_3_for_grayscale_8() {
 
 #[test]
 fn filter_4_for_grayscale_8() {
-    let input = PathBuf::from("tests/files/grayscale_8_should_be_grayscale_8.png");
+    let input = PathBuf::from("tests/files/filter_4_for_grayscale_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -888,7 +888,7 @@ fn filter_4_for_grayscale_8() {
 
 #[test]
 fn filter_5_for_grayscale_8() {
-    let input = PathBuf::from("tests/files/grayscale_8_should_be_grayscale_8.png");
+    let input = PathBuf::from("tests/files/filter_5_for_grayscale_8.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -905,7 +905,7 @@ fn filter_5_for_grayscale_8() {
 
 #[test]
 fn filter_0_for_palette_4() {
-    let input = PathBuf::from("tests/files/palette_4_should_be_palette_4.png");
+    let input = PathBuf::from("tests/files/filter_0_for_palette_4.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -922,7 +922,7 @@ fn filter_0_for_palette_4() {
 
 #[test]
 fn filter_1_for_palette_4() {
-    let input = PathBuf::from("tests/files/palette_4_should_be_palette_4.png");
+    let input = PathBuf::from("tests/files/filter_1_for_palette_4.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -939,7 +939,7 @@ fn filter_1_for_palette_4() {
 
 #[test]
 fn filter_2_for_palette_4() {
-    let input = PathBuf::from("tests/files/palette_4_should_be_palette_4.png");
+    let input = PathBuf::from("tests/files/filter_2_for_palette_4.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -956,7 +956,7 @@ fn filter_2_for_palette_4() {
 
 #[test]
 fn filter_3_for_palette_4() {
-    let input = PathBuf::from("tests/files/palette_4_should_be_palette_4.png");
+    let input = PathBuf::from("tests/files/filter_3_for_palette_4.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -973,7 +973,7 @@ fn filter_3_for_palette_4() {
 
 #[test]
 fn filter_4_for_palette_4() {
-    let input = PathBuf::from("tests/files/palette_4_should_be_palette_4.png");
+    let input = PathBuf::from("tests/files/filter_4_for_palette_4.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -990,7 +990,7 @@ fn filter_4_for_palette_4() {
 
 #[test]
 fn filter_5_for_palette_4() {
-    let input = PathBuf::from("tests/files/palette_4_should_be_palette_4.png");
+    let input = PathBuf::from("tests/files/filter_5_for_palette_4.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -1007,7 +1007,7 @@ fn filter_5_for_palette_4() {
 
 #[test]
 fn filter_0_for_palette_2() {
-    let input = PathBuf::from("tests/files/palette_2_should_be_palette_2.png");
+    let input = PathBuf::from("tests/files/filter_0_for_palette_2.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -1024,7 +1024,7 @@ fn filter_0_for_palette_2() {
 
 #[test]
 fn filter_1_for_palette_2() {
-    let input = PathBuf::from("tests/files/palette_2_should_be_palette_2.png");
+    let input = PathBuf::from("tests/files/filter_1_for_palette_2.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -1041,7 +1041,7 @@ fn filter_1_for_palette_2() {
 
 #[test]
 fn filter_2_for_palette_2() {
-    let input = PathBuf::from("tests/files/palette_2_should_be_palette_2.png");
+    let input = PathBuf::from("tests/files/filter_2_for_palette_2.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -1058,7 +1058,7 @@ fn filter_2_for_palette_2() {
 
 #[test]
 fn filter_3_for_palette_2() {
-    let input = PathBuf::from("tests/files/palette_2_should_be_palette_2.png");
+    let input = PathBuf::from("tests/files/filter_3_for_palette_2.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -1075,7 +1075,7 @@ fn filter_3_for_palette_2() {
 
 #[test]
 fn filter_4_for_palette_2() {
-    let input = PathBuf::from("tests/files/palette_2_should_be_palette_2.png");
+    let input = PathBuf::from("tests/files/filter_4_for_palette_2.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -1092,7 +1092,7 @@ fn filter_4_for_palette_2() {
 
 #[test]
 fn filter_5_for_palette_2() {
-    let input = PathBuf::from("tests/files/palette_2_should_be_palette_2.png");
+    let input = PathBuf::from("tests/files/filter_5_for_palette_2.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);
@@ -1109,7 +1109,7 @@ fn filter_5_for_palette_2() {
 
 #[test]
 fn filter_0_for_palette_1() {
-    let input = PathBuf::from("tests/files/palette_1_should_be_palette_1.png");
+    let input = PathBuf::from("tests/files/filter_0_for_palette_1.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(0);
@@ -1126,7 +1126,7 @@ fn filter_0_for_palette_1() {
 
 #[test]
 fn filter_1_for_palette_1() {
-    let input = PathBuf::from("tests/files/palette_1_should_be_palette_1.png");
+    let input = PathBuf::from("tests/files/filter_1_for_palette_1.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(1);
@@ -1143,7 +1143,7 @@ fn filter_1_for_palette_1() {
 
 #[test]
 fn filter_2_for_palette_1() {
-    let input = PathBuf::from("tests/files/palette_1_should_be_palette_1.png");
+    let input = PathBuf::from("tests/files/filter_2_for_palette_1.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(2);
@@ -1160,7 +1160,7 @@ fn filter_2_for_palette_1() {
 
 #[test]
 fn filter_3_for_palette_1() {
-    let input = PathBuf::from("tests/files/palette_1_should_be_palette_1.png");
+    let input = PathBuf::from("tests/files/filter_3_for_palette_1.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(3);
@@ -1177,7 +1177,7 @@ fn filter_3_for_palette_1() {
 
 #[test]
 fn filter_4_for_palette_1() {
-    let input = PathBuf::from("tests/files/palette_1_should_be_palette_1.png");
+    let input = PathBuf::from("tests/files/filter_4_for_palette_1.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(4);
@@ -1194,7 +1194,7 @@ fn filter_4_for_palette_1() {
 
 #[test]
 fn filter_5_for_palette_1() {
-    let input = PathBuf::from("tests/files/palette_1_should_be_palette_1.png");
+    let input = PathBuf::from("tests/files/filter_5_for_palette_1.png");
     let mut opts = get_opts(&input);
     opts.filter = HashSet::new();
     opts.filter.insert(5);

tests/flags.rs

@@ -50,7 +50,7 @@ fn get_opts(input: &Path) -> oxipng::Options {
 
 #[test]
 fn strip_headers() {
-    let input = PathBuf::from("tests/files/rgb_8_should_be_rgb_8.png");
+    let input = PathBuf::from("tests/files/strip_headers.png");
     let mut opts = get_opts(&input);
     opts.strip = true;
     let output = opts.out_file.clone();