fix: use view! indentation settings when formatting syn expression (#141

)

BREAKING CHANGE: When the indentation style is set to "Tabs", the formatter will print `pending_indentation / 4` hard tabs and the remainder (`pending_indentation % 4`) in spaces.  

The `tab_spaces` configuration property specifies the indentation size _in spaces_. This means that if you want an indentation of 1 hard tab (`\t`), you need to set `indentation_style = "Tabs"` and `tab_spaces = 4` (which is already the default).

formatter/src/formatter/attribute.rs

@@ -131,10 +131,14 @@ mod tests {
 
     #[test]
     fn key_value_expr_attr_always_unless_lit_braces() {
-        // sinle expr without braces
+        // single expr without braces
         let f = format_attr_with_brace_style! { AlwaysUnlessLit => on:click=move |_| set_value(0) };
         assert_snapshot!(f, @"on:click={move |_| set_value(0)}");
 
+        // single expr without braces
+        let f = format_attr_with_brace_style! { AlwaysUnlessLit => foo=bar };
+        assert_snapshot!(f, @"foo={bar}");
+
         // single expr with braces
         let f =
             format_attr_with_brace_style! { AlwaysUnlessLit => on:click={move |_| set_value(0)} };

formatter/src/formatter/element.rs

@@ -253,7 +253,7 @@ mod tests {
         let formatted = format_element_from_string!(indoc! {"
         <div key=a
             // width
-            width=100></div> 
+            width=100></div>
         "});
 
         insta::assert_snapshot!(formatted, @r###"
@@ -361,7 +361,7 @@ mod tests {
         let formatted = format_element_from_string!(indoc! {"
             <div>
             Unquoted text
-                    with  spaces 
+                    with  spaces
             </div>
         "});
 

formatter/src/formatter/expr.rs

@@ -153,12 +153,9 @@ impl Formatter<'_> {
 
 #[cfg(test)]
 mod tests {
-    use rstml::node::Node;
 
     use crate::formatter::*;
-    use crate::test_helpers::{
-        element, element_from_string, format_element_from_string, format_with,
-    };
+    use crate::test_helpers::format_element_from_string;
 
     macro_rules! format_element {
         ($($tt:tt)*) => {{