Another batch of command tests (#4496)

* Add a batch of command tests

* More tests

crates/nu-protocol/src/value/mod.rs

@@ -290,6 +290,7 @@ impl Value {
     pub fn as_float(&self) -> Result<f64, ShellError> {
         match self {
             Value::Float { val, .. } => Ok(*val),
+            Value::Int { val, .. } => Ok(*val as f64),
             x => Err(ShellError::CantConvert(
                 "float".into(),
                 x.get_type().to_string(),

crates/nu-protocol/src/value/range.rs

@@ -109,8 +109,7 @@ impl Range {
         self.from <= self.to
     }
 
-    #[inline]
-    fn is_end_inclusive(&self) -> bool {
+    pub fn is_end_inclusive(&self) -> bool {
         matches!(self.inclusion, RangeInclusion::Inclusive)
     }