diff --git a/crates/ra_hir_def/src/nameres/tests.rs b/crates/ra_hir_def/src/nameres/tests.rs
index 3f33a75b9a..949ca7595f 100644
--- a/crates/ra_hir_def/src/nameres/tests.rs
+++ b/crates/ra_hir_def/src/nameres/tests.rs
@@ -12,8 +12,8 @@ use test_utils::covers;
 
 use crate::{db::DefDatabase, nameres::*, test_db::TestDB};
 
-fn def_map(fixture: &str) -> String {
-    compute_crate_def_map(fixture).dump()
+fn def_map(ra_fixture: &str) -> String {
+    compute_crate_def_map(ra_fixture).dump()
 }
 
 fn compute_crate_def_map(fixture: &str) -> Arc<CrateDefMap> {
diff --git a/crates/ra_hir_def/src/nameres/tests/globs.rs b/crates/ra_hir_def/src/nameres/tests/globs.rs
index 71fa0abe8a..ee8df3a26f 100644
--- a/crates/ra_hir_def/src/nameres/tests/globs.rs
+++ b/crates/ra_hir_def/src/nameres/tests/globs.rs
@@ -3,7 +3,7 @@ use super::*;
 #[test]
 fn glob_1() {
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         mod foo;
         use foo::*;
@@ -76,7 +76,7 @@ fn glob_2() {
 #[test]
 fn glob_privacy_1() {
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         mod foo;
         use foo::*;
@@ -93,21 +93,21 @@ fn glob_privacy_1() {
         ",
     );
     assert_snapshot!(map, @r###"
-    crate
-    Baz: t v
-    bar: t
-    foo: t
-    
-    crate::foo
-    Baz: t v
-    PrivateStructFoo: t v
-    bar: t
-    
-    crate::foo::bar
-    Baz: t v
-    PrivateStructBar: t v
-    PrivateStructFoo: t v
-    bar: t
+        ⋮crate
+        ⋮Baz: t v
+        ⋮bar: t
+        ⋮foo: t
+        ⋮
+        ⋮crate::foo
+        ⋮Baz: t v
+        ⋮PrivateStructFoo: t v
+        ⋮bar: t
+        ⋮
+        ⋮crate::foo::bar
+        ⋮Baz: t v
+        ⋮PrivateStructBar: t v
+        ⋮PrivateStructFoo: t v
+        ⋮bar: t
     "###
     );
 }
@@ -115,7 +115,7 @@ fn glob_privacy_1() {
 #[test]
 fn glob_privacy_2() {
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         mod foo;
         use foo::*;
@@ -133,19 +133,19 @@ fn glob_privacy_2() {
         ",
     );
     assert_snapshot!(map, @r###"
-    crate
-    Foo: t
-    PubCrateStruct: t v
-    foo: t
-    
-    crate::foo
-    Foo: t v
-    bar: t
-    
-    crate::foo::bar
-    PrivateBar: t v
-    PrivateBaz: t v
-    PubCrateStruct: t v
+        ⋮crate
+        ⋮Foo: t
+        ⋮PubCrateStruct: t v
+        ⋮foo: t
+        ⋮
+        ⋮crate::foo
+        ⋮Foo: t v
+        ⋮bar: t
+        ⋮
+        ⋮crate::foo::bar
+        ⋮PrivateBar: t v
+        ⋮PrivateBaz: t v
+        ⋮PubCrateStruct: t v
     "###
     );
 }
@@ -154,7 +154,7 @@ fn glob_privacy_2() {
 fn glob_across_crates() {
     covers!(glob_across_crates);
     let map = def_map(
-        "
+        r"
         //- /main.rs crate:main deps:test_crate
         use test_crate::*;
 
@@ -163,8 +163,8 @@ fn glob_across_crates() {
         ",
     );
     assert_snapshot!(map, @r###"
-   ⋮crate
-   ⋮Baz: t v
+        ⋮crate
+        ⋮Baz: t v
     "###
     );
 }
@@ -173,7 +173,7 @@ fn glob_across_crates() {
 fn glob_privacy_across_crates() {
     covers!(glob_across_crates);
     let map = def_map(
-        "
+        r"
         //- /main.rs crate:main deps:test_crate
         use test_crate::*;
 
@@ -183,8 +183,8 @@ fn glob_privacy_across_crates() {
         ",
     );
     assert_snapshot!(map, @r###"
-   ⋮crate
-   ⋮Baz: t v
+        ⋮crate
+        ⋮Baz: t v
     "###
     );
 }
@@ -202,10 +202,10 @@ fn glob_enum() {
         ",
     );
     assert_snapshot!(map, @r###"
-   ⋮crate
-   ⋮Bar: t v
-   ⋮Baz: t v
-   ⋮Foo: t
+        ⋮crate
+        ⋮Bar: t v
+        ⋮Baz: t v
+        ⋮Foo: t
     "###
     );
 }
@@ -214,7 +214,7 @@ fn glob_enum() {
 fn glob_enum_group() {
     covers!(glob_enum_group);
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         enum Foo {
             Bar, Baz
@@ -223,10 +223,10 @@ fn glob_enum_group() {
         ",
     );
     assert_snapshot!(map, @r###"
-   ⋮crate
-   ⋮Bar: t v
-   ⋮Baz: t v
-   ⋮Foo: t
+        ⋮crate
+        ⋮Bar: t v
+        ⋮Baz: t v
+        ⋮Foo: t
     "###
     );
 }
diff --git a/crates/ra_hir_def/src/nameres/tests/macros.rs b/crates/ra_hir_def/src/nameres/tests/macros.rs
index d104f5993f..b0befdfbd6 100644
--- a/crates/ra_hir_def/src/nameres/tests/macros.rs
+++ b/crates/ra_hir_def/src/nameres/tests/macros.rs
@@ -3,7 +3,7 @@ use super::*;
 #[test]
 fn macro_rules_are_globally_visible() {
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         macro_rules! structs {
             ($($i:ident),*) => {
@@ -31,7 +31,7 @@ fn macro_rules_are_globally_visible() {
 #[test]
 fn macro_rules_can_define_modules() {
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         macro_rules! m {
             ($name:ident) => { mod $name;  }
@@ -51,21 +51,21 @@ fn macro_rules_can_define_modules() {
         ",
     );
     assert_snapshot!(map, @r###"
-    crate
-    m: t
-    n1: t
-    
-    crate::m
-    n3: t
-    
-    crate::m::n3
-    Y: t v
-    
-    crate::n1
-    n2: t
-    
-    crate::n1::n2
-    X: t v
+        ⋮crate
+        ⋮m: t
+        ⋮n1: t
+        ⋮
+        ⋮crate::m
+        ⋮n3: t
+        ⋮
+        ⋮crate::m::n3
+        ⋮Y: t v
+        ⋮
+        ⋮crate::n1
+        ⋮n2: t
+        ⋮
+        ⋮crate::n1::n2
+        ⋮X: t v
     "###);
 }
 
diff --git a/crates/ra_hir_def/src/nameres/tests/mod_resolution.rs b/crates/ra_hir_def/src/nameres/tests/mod_resolution.rs
index 22103ab290..b502a40797 100644
--- a/crates/ra_hir_def/src/nameres/tests/mod_resolution.rs
+++ b/crates/ra_hir_def/src/nameres/tests/mod_resolution.rs
@@ -4,7 +4,7 @@ use super::*;
 fn name_res_works_for_broken_modules() {
     covers!(name_res_works_for_broken_modules);
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         mod foo // no `;`, no body
 
@@ -28,7 +28,7 @@ fn name_res_works_for_broken_modules() {
 #[test]
 fn nested_module_resolution() {
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         mod n1;
 
@@ -55,7 +55,7 @@ fn nested_module_resolution() {
 #[test]
 fn nested_module_resolution_2() {
     let map = def_map(
-        "
+        r"
         //- /lib.rs
         mod prelude;
         mod iter;
@@ -77,23 +77,23 @@ fn nested_module_resolution_2() {
     );
 
     assert_snapshot!(map, @r###"
-    crate
-    iter: t
-    prelude: t
-    
-    crate::iter
-    Iterator: t
-    traits: t
-    
-    crate::iter::traits
-    Iterator: t
-    iterator: t
-    
-    crate::iter::traits::iterator
-    Iterator: t
-    
-    crate::prelude
-    Iterator: t
+        ⋮crate
+        ⋮iter: t
+        ⋮prelude: t
+        ⋮
+        ⋮crate::iter
+        ⋮Iterator: t
+        ⋮traits: t
+        ⋮
+        ⋮crate::iter::traits
+        ⋮Iterator: t
+        ⋮iterator: t
+        ⋮
+        ⋮crate::iter::traits::iterator
+        ⋮Iterator: t
+        ⋮
+        ⋮crate::prelude
+        ⋮Iterator: t
     "###);
 }
 
@@ -780,17 +780,17 @@ fn nested_out_of_line_module() {
     );
 
     assert_snapshot!(map, @r###"
-    crate
-    a: t
-    
-    crate::a
-    b: t
-    
-    crate::a::b
-    c: t
-    
-    crate::a::b::c
-    X: t v
+        ⋮crate
+        ⋮a: t
+        ⋮
+        ⋮crate::a
+        ⋮b: t
+        ⋮
+        ⋮crate::a::b
+        ⋮c: t
+        ⋮
+        ⋮crate::a::b::c
+        ⋮X: t v
     "###);
 }
 
@@ -812,16 +812,16 @@ fn nested_out_of_line_module_with_path() {
     );
 
     assert_snapshot!(map, @r###"
-    crate
-    a: t
-    
-    crate::a
-    b: t
-    
-    crate::a::b
-    c: t
-    
-    crate::a::b::c
-    X: t v
+        ⋮crate
+        ⋮a: t
+        ⋮
+        ⋮crate::a
+        ⋮b: t
+        ⋮
+        ⋮crate::a::b
+        ⋮c: t
+        ⋮
+        ⋮crate::a::b::c
+        ⋮X: t v
     "###);
 }
diff --git a/crates/ra_ide/src/goto_definition.rs b/crates/ra_ide/src/goto_definition.rs
index a7be92ce3e..502fcb0cf6 100644
--- a/crates/ra_ide/src/goto_definition.rs
+++ b/crates/ra_ide/src/goto_definition.rs
@@ -100,8 +100,8 @@ mod tests {
 
     use crate::mock_analysis::analysis_and_position;
 
-    fn check_goto(fixture: &str, expected: &str, expected_range: &str) {
-        let (analysis, pos) = analysis_and_position(fixture);
+    fn check_goto(ra_fixture: &str, expected: &str, expected_range: &str) {
+        let (analysis, pos) = analysis_and_position(ra_fixture);
 
         let mut navs = analysis.goto_definition(pos).unwrap().unwrap().info;
         assert_eq!(navs.len(), 1);
@@ -790,8 +790,8 @@ mod tests {
     #[test]
     fn goto_def_in_local_macro() {
         check_goto(
-            "
-            //- /lib.rs            
+            r"
+            //- /lib.rs
             fn bar() {
                 macro_rules! foo { () => { () } }
                 <|>foo!();
diff --git a/xtask/tests/tidy-tests/main.rs b/xtask/tests/tidy-tests/main.rs
index 2d2d88beca..5ae86c87c9 100644
--- a/xtask/tests/tidy-tests/main.rs
+++ b/xtask/tests/tidy-tests/main.rs
@@ -14,6 +14,7 @@ fn rust_files_are_tidy() {
     for path in rust_files() {
         let text = fs2::read_to_string(&path).unwrap();
         check_todo(&path, &text);
+        check_trailing_ws(&path, &text);
         tidy_docs.visit(&path, &text);
     }
     tidy_docs.finish();
@@ -33,6 +34,17 @@ fn check_todo(path: &Path, text: &str) {
     }
 }
 
+fn check_trailing_ws(path: &Path, text: &str) {
+    if is_exclude_dir(path, &["test_data"]) {
+        return;
+    }
+    for line in text.lines() {
+        if line.chars().last().map(char::is_whitespace) == Some(true) {
+            panic!("Trailing whitespace in {}", path.display())
+        }
+    }
+}
+
 #[derive(Default)]
 struct TidyDocs {
     missing_docs: Vec<String>,
@@ -41,7 +53,13 @@ struct TidyDocs {
 
 impl TidyDocs {
     fn visit(&mut self, path: &Path, text: &str) {
-        if is_exclude_dir(path) || is_exclude_file(path) {
+        // Test hopefully don't really need comments, and for assists we already
+        // have special comments which are source of doc tests and user docs.
+        if is_exclude_dir(path, &["tests", "test_data", "handlers"]) {
+            return;
+        }
+
+        if is_exclude_file(path) {
             return;
         }
 
@@ -58,21 +76,6 @@ impl TidyDocs {
             self.missing_docs.push(path.display().to_string());
         }
 
-        fn is_exclude_dir(p: &Path) -> bool {
-            // Test hopefully don't really need comments, and for assists we already
-            // have special comments which are source of doc tests and user docs.
-            let exclude_dirs = ["tests", "test_data", "handlers"];
-            let mut cur_path = p;
-            while let Some(path) = cur_path.parent() {
-                if exclude_dirs.iter().any(|dir| path.ends_with(dir)) {
-                    return true;
-                }
-                cur_path = path;
-            }
-
-            false
-        }
-
         fn is_exclude_file(d: &Path) -> bool {
             let file_names = ["tests.rs"];
 
@@ -128,6 +131,18 @@ impl TidyDocs {
     }
 }
 
+fn is_exclude_dir(p: &Path, dirs_to_exclude: &[&str]) -> bool {
+    let mut cur_path = p;
+    while let Some(path) = cur_path.parent() {
+        if dirs_to_exclude.iter().any(|dir| path.ends_with(dir)) {
+            return true;
+        }
+        cur_path = path;
+    }
+
+    false
+}
+
 fn rust_files() -> impl Iterator<Item = PathBuf> {
     let crates = project_root().join("crates");
     let iter = WalkDir::new(crates);