Change src/test to tests in source files, fix tidy and tests

Author: albertlarsan68

tests/source/issue-2445.rs

@@ -1,6 +1,6 @@
 test!(RunPassPretty {
             // comment
-    path: "src/test/run-pass/pretty",
+    path: "tests/run-pass/pretty",
     mode: "pretty",
     suite: "run-pass",
     default: false,
@@ -9,7 +9,7 @@ test!(RunPassPretty {
 
 test!(RunPassPretty {
             // comment
-    path: "src/test/run-pass/pretty",
+    path: "tests/run-pass/pretty",
     mode: "pretty",
     suite: "run-pass",
     default: false,

tests/target/issue-2445.rs

@@ -1,6 +1,6 @@
 test!(RunPassPretty {
     // comment
-    path: "src/test/run-pass/pretty",
+    path: "tests/run-pass/pretty",
     mode: "pretty",
     suite: "run-pass",
     default: false,
@@ -9,7 +9,7 @@ test!(RunPassPretty {
 
 test!(RunPassPretty {
     // comment
-    path: "src/test/run-pass/pretty",
+    path: "tests/run-pass/pretty",
     mode: "pretty",
     suite: "run-pass",
     default: false,