From 95161692f4667f0b60885a55a20fc8c874b6de06 Mon Sep 17 00:00:00 2001
From: Sebastian Hugentobler <sebastian@vanwa.ch>
Date: Tue, 14 Mar 2023 13:11:19 +0100
Subject: [PATCH] correct tests

---
 dist_text/src/text.rs | 57 ++++++++++++++++++++++++++++---------------
 1 file changed, 37 insertions(+), 20 deletions(-)

diff --git a/dist_text/src/text.rs b/dist_text/src/text.rs
index e850594..c2c14bd 100644
--- a/dist_text/src/text.rs
+++ b/dist_text/src/text.rs
@@ -1,6 +1,6 @@
-use std::fmt::{Display, Formatter};
-use crdts::{CmRDT, List};
 use crdts::list::Op;
+use crdts::{CmRDT, List};
+use std::fmt::{Display, Formatter};
 
 #[derive(Clone)]
 pub struct Text {
@@ -9,9 +9,7 @@ pub struct Text {
 
 impl Default for Text {
     fn default() -> Self {
-        Self {
-            inner: List::new()
-        }
+        Self { inner: List::new() }
     }
 }
 
@@ -25,14 +23,26 @@ impl Display for Text {
 
 impl Text {
     pub fn apply_ops(&mut self, ops: Vec<Op<u16, String>>) {
-        ops.iter().for_each(move |op| self.inner.apply(op.to_owned()));
+        ops.iter()
+            .for_each(move |op| self.inner.apply(op.to_owned()));
     }
 
-    pub fn insert_linebreak(&mut self, start: usize, end: usize, src: &str) -> Vec<Op<u16, String>> {
+    pub fn insert_linebreak(
+        &mut self,
+        start: usize,
+        end: usize,
+        src: &str,
+    ) -> Vec<Op<u16, String>> {
         self.insert(start, end, "\n", src)
     }
 
-    pub fn insert(&mut self, start: usize, end: usize, data: &str, src: &str) -> Vec<Op<u16, String>> {
+    pub fn insert(
+        &mut self,
+        start: usize,
+        end: usize,
+        data: &str,
+        src: &str,
+    ) -> Vec<Op<u16, String>> {
         let mut ops: Vec<Op<u16, String>> = Vec::new();
 
         if start < end {
@@ -55,14 +65,22 @@ impl Text {
     }
 
     pub fn delete_backward(&mut self, start: usize, end: usize, src: &str) -> Vec<Op<u16, String>> {
-        if (start == 0 && start == end) || end > self.inner.len() { return Vec::new(); }
+        if (start == 0 && start == end) || end > self.inner.len() {
+            return Vec::new();
+        }
 
-        let (end, start) = if start == end { (start, start - 1) } else { (end, start) };
+        let (end, start) = if start == end {
+            (start, start - 1)
+        } else {
+            (end, start)
+        };
         self.delete(start, end, src)
     }
 
     pub fn delete_forward(&mut self, start: usize, end: usize, src: &str) -> Vec<Op<u16, String>> {
-        if start >= self.inner.len() { return Vec::new(); }
+        if start >= self.inner.len() {
+            return Vec::new();
+        }
 
         let end = if start == end { start + 1 } else { end };
         self.delete(start, end, src)
@@ -104,7 +122,7 @@ mod tests {
 
     #[test]
     fn insert_delete() {
-        let mut t = Text::new();
+        let mut t = Text::default();
         t.insert(0, 0, "Hello", "A");
         t.insert(5, 5, "world!", "A");
         t.insert(5, 5, ", ", "B");
@@ -121,7 +139,7 @@ mod tests {
 
     #[test]
     fn backspace() {
-        let mut t = Text::new();
+        let mut t = Text::default();
         t.insert(0, 0, "Hello", "A");
 
         t.delete_backward(5, 5, "A");
@@ -133,7 +151,7 @@ mod tests {
 
     #[test]
     fn delete() {
-        let mut t = Text::new();
+        let mut t = Text::default();
         t.insert(0, 0, "Hello", "A");
 
         t.delete_forward(4, 4, "A");
@@ -145,7 +163,7 @@ mod tests {
 
     #[test]
     fn linebreak() {
-        let mut t = Text::new();
+        let mut t = Text::default();
         t.insert(0, 0, "Hello, world!", "A");
         t.insert_linebreak(6, 6, "A");
 
@@ -159,21 +177,20 @@ mod tests {
 
     #[test]
     fn apply_ops() {
-        let mut t_a = Text::new();
+        let mut t_a = Text::default();
         let ops_a = t_a.insert(0, 0, "Hello, world!", "A");
 
-        let mut t_b = Text::new();
+        let mut t_b = Text::default();
         t_b.apply_ops(ops_a);
 
         assert_eq!(t_b.to_string(), "Hello, world!");
 
-        let ops_a = t_a.insert(7,7, "distributed ", "A");
+        let ops_a = t_a.insert(7, 7, "distributed ", "A");
         t_b.apply_ops(ops_a);
 
-        let ops_b = t_b.insert(7,7, "cruel ", "B");
+        let ops_b = t_b.insert(7, 7, "cruel ", "B");
         t_a.apply_ops(ops_b);
 
-
         assert_eq!(t_a.to_string(), "Hello, cruel distributed world!");
         assert_eq!(t_b.to_string(), "Hello, cruel distributed world!");
     }