Don't punish every crate with serde-json

Author: matklad

Cargo.lock

@@ -13,7 +13,7 @@ use project_model::ProjectManifest;
 use rust_analyzer::{config::Config, lsp_ext, main_loop};
 use serde::Serialize;
 use serde_json::{json, to_string_pretty, Value};
-use test_utils::{find_mismatch, Fixture};
+use test_utils::Fixture;
 use vfs::AbsPathBuf;
 
 use crate::testdir::TestDir;
@@ -279,3 +279,98 @@ fn recv_timeout(receiver: &Receiver<Message>) -> Result<Option<Message>, Timeout
         recv(after(timeout)) -> _ => Err(Timeout),
     }
 }
+
+// Comparison functionality borrowed from cargo:
+
+/// Compares JSON object for approximate equality.
+/// You can use `[..]` wildcard in strings (useful for OS dependent things such
+/// as paths). You can use a `"{...}"` string literal as a wildcard for
+/// arbitrary nested JSON. Arrays are sorted before comparison.
+fn find_mismatch<'a>(expected: &'a Value, actual: &'a Value) -> Option<(&'a Value, &'a Value)> {
+    match (expected, actual) {
+        (Value::Number(l), Value::Number(r)) if l == r => None,
+        (Value::Bool(l), Value::Bool(r)) if l == r => None,
+        (Value::String(l), Value::String(r)) if lines_match(l, r) => None,
+        (Value::Array(l), Value::Array(r)) => {
+            if l.len() != r.len() {
+                return Some((expected, actual));
+            }
+
+            let mut l = l.iter().collect::<Vec<_>>();
+            let mut r = r.iter().collect::<Vec<_>>();
+
+            l.retain(|l| match r.iter().position(|r| find_mismatch(l, r).is_none()) {
+                Some(i) => {
+                    r.remove(i);
+                    false
+                }
+                None => true,
+            });
+
+            if !l.is_empty() {
+                assert!(!r.is_empty());
+                Some((&l[0], &r[0]))
+            } else {
+                assert_eq!(r.len(), 0);
+                None
+            }
+        }
+        (Value::Object(l), Value::Object(r)) => {
+            fn sorted_values(obj: &serde_json::Map<String, Value>) -> Vec<&Value> {
+                let mut entries = obj.iter().collect::<Vec<_>>();
+                entries.sort_by_key(|it| it.0);
+                entries.into_iter().map(|(_k, v)| v).collect::<Vec<_>>()
+            }
+
+            let same_keys = l.len() == r.len() && l.keys().all(|k| r.contains_key(k));
+            if !same_keys {
+                return Some((expected, actual));
+            }
+
+            let l = sorted_values(l);
+            let r = sorted_values(r);
+
+            l.into_iter().zip(r).filter_map(|(l, r)| find_mismatch(l, r)).next()
+        }
+        (Value::Null, Value::Null) => None,
+        // magic string literal "{...}" acts as wildcard for any sub-JSON
+        (Value::String(l), _) if l == "{...}" => None,
+        _ => Some((expected, actual)),
+    }
+}
+
+/// Compare a line with an expected pattern.
+/// - Use `[..]` as a wildcard to match 0 or more characters on the same line
+///   (similar to `.*` in a regex).
+fn lines_match(expected: &str, actual: &str) -> bool {
+    // Let's not deal with / vs \ (windows...)
+    // First replace backslash-escaped backslashes with forward slashes
+    // which can occur in, for example, JSON output
+    let expected = expected.replace(r"\\", "/").replace(r"\", "/");
+    let mut actual: &str = &actual.replace(r"\\", "/").replace(r"\", "/");
+    for (i, part) in expected.split("[..]").enumerate() {
+        match actual.find(part) {
+            Some(j) => {
+                if i == 0 && j != 0 {
+                    return false;
+                }
+                actual = &actual[j + part.len()..];
+            }
+            None => return false,
+        }
+    }
+    actual.is_empty() || expected.ends_with("[..]")
+}
+
+#[test]
+fn lines_match_works() {
+    assert!(lines_match("a b", "a b"));
+    assert!(lines_match("a[..]b", "a b"));
+    assert!(lines_match("a[..]", "a b"));
+    assert!(lines_match("[..]", "a b"));
+    assert!(lines_match("[..]b", "a b"));
+
+    assert!(!lines_match("[..]b", "c"));
+    assert!(!lines_match("b", "c"));
+    assert!(!lines_match("b", "cb"));
+}

crates/rust-analyzer/tests/rust-analyzer/support.rs

@@ -13,7 +13,6 @@ doctest = false
 # Avoid adding deps here, this crate is widely used in tests it should compile fast!
 dissimilar = "1.0.2"
 text-size = "1.0.0"
-serde_json = "1.0.48"
 rustc-hash = "1.1.0"
 
 stdx = { path = "../stdx", version = "0.0.0" }

crates/test_utils/Cargo.toml

@@ -18,7 +18,6 @@ use std::{
 };
 
 use profile::StopWatch;
-use serde_json::Value;
 use stdx::lines_with_ends;
 use text_size::{TextRange, TextSize};
 
@@ -281,101 +280,6 @@ fn main() {
     );
 }
 
-// Comparison functionality borrowed from cargo:
-
-/// Compare a line with an expected pattern.
-/// - Use `[..]` as a wildcard to match 0 or more characters on the same line
-///   (similar to `.*` in a regex).
-pub fn lines_match(expected: &str, actual: &str) -> bool {
-    // Let's not deal with / vs \ (windows...)
-    // First replace backslash-escaped backslashes with forward slashes
-    // which can occur in, for example, JSON output
-    let expected = expected.replace(r"\\", "/").replace(r"\", "/");
-    let mut actual: &str = &actual.replace(r"\\", "/").replace(r"\", "/");
-    for (i, part) in expected.split("[..]").enumerate() {
-        match actual.find(part) {
-            Some(j) => {
-                if i == 0 && j != 0 {
-                    return false;
-                }
-                actual = &actual[j + part.len()..];
-            }
-            None => return false,
-        }
-    }
-    actual.is_empty() || expected.ends_with("[..]")
-}
-
-#[test]
-fn lines_match_works() {
-    assert!(lines_match("a b", "a b"));
-    assert!(lines_match("a[..]b", "a b"));
-    assert!(lines_match("a[..]", "a b"));
-    assert!(lines_match("[..]", "a b"));
-    assert!(lines_match("[..]b", "a b"));
-
-    assert!(!lines_match("[..]b", "c"));
-    assert!(!lines_match("b", "c"));
-    assert!(!lines_match("b", "cb"));
-}
-
-/// Compares JSON object for approximate equality.
-/// You can use `[..]` wildcard in strings (useful for OS dependent things such
-/// as paths). You can use a `"{...}"` string literal as a wildcard for
-/// arbitrary nested JSON. Arrays are sorted before comparison.
-pub fn find_mismatch<'a>(expected: &'a Value, actual: &'a Value) -> Option<(&'a Value, &'a Value)> {
-    match (expected, actual) {
-        (Value::Number(l), Value::Number(r)) if l == r => None,
-        (Value::Bool(l), Value::Bool(r)) if l == r => None,
-        (Value::String(l), Value::String(r)) if lines_match(l, r) => None,
-        (Value::Array(l), Value::Array(r)) => {
-            if l.len() != r.len() {
-                return Some((expected, actual));
-            }
-
-            let mut l = l.iter().collect::<Vec<_>>();
-            let mut r = r.iter().collect::<Vec<_>>();
-
-            l.retain(|l| match r.iter().position(|r| find_mismatch(l, r).is_none()) {
-                Some(i) => {
-                    r.remove(i);
-                    false
-                }
-                None => true,
-            });
-
-            if !l.is_empty() {
-                assert!(!r.is_empty());
-                Some((&l[0], &r[0]))
-            } else {
-                assert_eq!(r.len(), 0);
-                None
-            }
-        }
-        (Value::Object(l), Value::Object(r)) => {
-            fn sorted_values(obj: &serde_json::Map<String, Value>) -> Vec<&Value> {
-                let mut entries = obj.iter().collect::<Vec<_>>();
-                entries.sort_by_key(|it| it.0);
-                entries.into_iter().map(|(_k, v)| v).collect::<Vec<_>>()
-            }
-
-            let same_keys = l.len() == r.len() && l.keys().all(|k| r.contains_key(k));
-            if !same_keys {
-                return Some((expected, actual));
-            }
-
-            let l = sorted_values(l);
-            let r = sorted_values(r);
-
-            l.into_iter().zip(r).filter_map(|(l, r)| find_mismatch(l, r)).next()
-        }
-        (Value::Null, Value::Null) => None,
-        // magic string literal "{...}" acts as wildcard for any sub-JSON
-        (Value::String(l), _) if l == "{...}" => None,
-        _ => Some((expected, actual)),
-    }
-}
-
 /// Returns `false` if slow tests should not run, otherwise returns `true` and
 /// also creates a file at `./target/.slow_tests_cookie` which serves as a flag
 /// that slow tests did run.