expect, jest-matcher-utils: Display change counts in annotation lines (…

…#9035)

* expect, jest-matcher-utils: Display change counts in annotation lines

* Update CHANGELOG.md

CHANGELOG.md

@@ -6,6 +6,7 @@
 - `[babel-plugin-jest-hoist]` Add `BigInt` to `WHITELISTED_IDENTIFIERS` ([#8382](https://github.com/facebook/jest/pull/8382))
 - `[babel-preset-jest]` Add `@babel/plugin-syntax-bigint` ([#8382](https://github.com/facebook/jest/pull/8382))
 - `[expect]` Add `BigInt` support to `toBeGreaterThan`, `toBeGreaterThanOrEqual`, `toBeLessThan` and `toBeLessThanOrEqual` ([#8382](https://github.com/facebook/jest/pull/8382))
+- `[expect, jest-matcher-utils]` Display change counts in annotation lines ([#9035](https://github.com/facebook/jest/pull/9035))
 - `[jest-config]` Throw the full error message and stack when a Jest preset is missing a dependency ([#8924](https://github.com/facebook/jest/pull/8924))
 - `[jest-config]` [**BREAKING**] Set default display name color based on runner ([#8689](https://github.com/facebook/jest/pull/8689))
 - `[jest-diff]` Add options for colors and symbols ([#8841](https://github.com/facebook/jest/pull/8841))

e2e/__tests__/__snapshots__/failures.test.ts.snap

@@ -288,8 +288,8 @@ FAIL __tests__/asyncFailures.test.js
 
     expect(received).resolves.toEqual(expected) // deep equality
 
-    - Expected
-    + Received
+    - Expected  - 1
+    + Received  + 1
 
       Object {
     -   "baz": "bar",
@@ -310,8 +310,8 @@ FAIL __tests__/asyncFailures.test.js
 
     expect(received).rejects.toEqual(expected) // deep equality
 
-    - Expected
-    + Received
+    - Expected  - 1
+    + Received  + 1
 
       Object {
     -   "baz": "bar",

packages/expect/src/__tests__/__snapshots__/extend.test.js.snap

@@ -3,8 +3,8 @@
 exports[`defines asymmetric unary matchers 1`] = `
 <d>expect(</><r>received</><d>).</>toEqual<d>(</><g>expected</><d>) // deep equality</>
 
-<g>- Expected</>
-<r>+ Received</>
+<g>- Expected  - 1</>
+<r>+ Received  + 1</>
 
 <d>  Object {</>
 <g>-   "value": toBeDivisibleBy<2>,</>
@@ -15,8 +15,8 @@ exports[`defines asymmetric unary matchers 1`] = `
 exports[`defines asymmetric unary matchers that can be prefixed by not 1`] = `
 <d>expect(</><r>received</><d>).</>toEqual<d>(</><g>expected</><d>) // deep equality</>
 
-<g>- Expected</>
-<r>+ Received</>
+<g>- Expected  - 1</>
+<r>+ Received  + 1</>
 
 <d>  Object {</>
 <g>-   "value": not.toBeDivisibleBy<2>,</>
@@ -27,8 +27,8 @@ exports[`defines asymmetric unary matchers that can be prefixed by not 1`] = `
 exports[`defines asymmetric variadic matchers 1`] = `
 <d>expect(</><r>received</><d>).</>toEqual<d>(</><g>expected</><d>) // deep equality</>
 
-<g>- Expected</>
-<r>+ Received</>
+<g>- Expected  - 1</>
+<r>+ Received  + 1</>
 
 <d>  Object {</>
 <g>-   "value": toBeWithinRange<4, 11>,</>
@@ -39,8 +39,8 @@ exports[`defines asymmetric variadic matchers 1`] = `
 exports[`defines asymmetric variadic matchers that can be prefixed by not 1`] = `
 <d>expect(</><r>received</><d>).</>toEqual<d>(</><g>expected</><d>) // deep equality</>
 
-<g>- Expected</>
-<r>+ Received</>
+<g>- Expected  - 1</>
+<r>+ Received  + 1</>
 
 <d>  Object {</>
 <g>-   "value": not.toBeWithinRange<1, 3>,</>