fix(diff): Remove duplicated output

In the tree view, we already show the original and the current value, we
shouldnt show an entire Diff that is only parseable by color.

In changing this, we removed the more cosmetic atom selector.  We also
removed the edit distance, since there isn't a known case for it.  Let
us know if you needed this!

Fixes assert-rs#94
Fixes assert-rs#105

CHANGELOG.md

@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 <!-- next-header -->
 ## [Unreleased] - ReleaseDate
 
+#### Breaking Changes
+
+- `predicates::str::diff` was removed
+- `predicates::str::similar` was renamed to `diff`
+- The `difference` feature flag was renamed to `diff`
+- `diff().split` and `diff().distance` were removed
+
+#### Fixes
+
+- Shrink the output of Diffs because its redundant
+- Moved off of an unmaintained Diff library
+
 ## [1.0.4] - 2021-05-12
 
 #### Features

Cargo.toml

@@ -21,9 +21,10 @@ maintenance = { status = "passively-maintained" }
 name = "bin_fixture"
 
 [dependencies]
-predicates = { version = "1.0", default-features = false, features = ["difference"] }
-predicates-core = "1.0"
-predicates-tree = "1.0"
+predicates = { version = "1.0", default-features = false, features = ["diff"], path="../predicates-rs" }
+predicates-core = {version="1.0", path="../predicates-rs/crates/core" }
+predicates-tree = {version="1.0", path="../predicates-rs/crates/tree" }
+
 doc-comment = "0.3"
 wait-timeout = "0.2.0"
 bstr = "0.2.14"

src/assert.rs

@@ -295,7 +295,7 @@ impl Assert {
     ///     .env("stdout", "hello")
     ///     .env("stderr", "world")
     ///     .assert()
-    ///     .stdout(predicate::str::similar("hello\n"));
+    ///     .stdout(predicate::str::diff("hello\n"));
     /// ```
     ///
     /// Accepting bytes:
@@ -379,7 +379,7 @@ impl Assert {
     ///     .env("stdout", "hello")
     ///     .env("stderr", "world")
     ///     .assert()
-    ///     .stderr(predicate::str::similar("world\n"));
+    ///     .stderr(predicate::str::diff("world\n"));
     /// ```
     ///
     /// Accepting bytes:
@@ -654,7 +654,7 @@ impl IntoCodePredicate<InCodePredicate> for &'static [i32] {
 ///     .env("stdout", "hello")
 ///     .env("stderr", "world")
 ///     .assert()
-///     .stdout(predicate::str::similar("hello\n").from_utf8());
+///     .stdout(predicate::str::diff("hello\n").from_utf8());
 ///
 /// // which can be shortened to:
 /// Command::cargo_bin("bin_fixture")
@@ -785,12 +785,12 @@ pub struct StrContentOutputPredicate(
 
 impl StrContentOutputPredicate {
     pub(crate) fn from_str(value: &'static str) -> Self {
-        let pred = predicates::str::similar(value).from_utf8();
+        let pred = predicates::str::diff(value).from_utf8();
         StrContentOutputPredicate(pred)
     }
 
     pub(crate) fn from_string(value: String) -> Self {
-        let pred = predicates::str::similar(value).from_utf8();
+        let pred = predicates::str::diff(value).from_utf8();
         StrContentOutputPredicate(pred)
     }
 }
@@ -862,7 +862,7 @@ impl IntoOutputPredicate<StrContentOutputPredicate> for &'static str {
 ///     .env("stdout", "hello")
 ///     .env("stderr", "world")
 ///     .assert()
-///     .stderr(predicate::str::similar("world\n"));
+///     .stderr(predicate::str::diff("world\n"));
 /// ```
 #[derive(Debug, Clone)]
 pub struct StrOutputPredicate<P: predicates_core::Predicate<str>>(

tests/assert.rs

@@ -93,7 +93,7 @@ fn stdout_example() {
         .env("stdout", "hello")
         .env("stderr", "world")
         .assert()
-        .stdout(predicate::str::similar("hello\n"));
+        .stdout(predicate::str::diff("hello\n"));
 
     Command::cargo_bin("bin_fixture")
         .unwrap()
@@ -131,7 +131,7 @@ fn stderr_example() {
         .env("stdout", "hello")
         .env("stderr", "world")
         .assert()
-        .stderr(predicate::str::similar("world\n"));
+        .stderr(predicate::str::diff("world foo\n"));
 
     Command::cargo_bin("bin_fixture")
         .unwrap()