docs: improve exception matching (#13407)

Author: jesusarell

docs/UsingMatchers.md

@@ -142,16 +142,20 @@ If you want to test whether a particular function throws an error when it's call
 
 ```js
 function compileAndroidCode() {
-  throw new Error('you are using the wrong JDK');
+  throw new Error('you are using the wrong JDK!');
 }
 
 test('compiling android goes as expected', () => {
   expect(() => compileAndroidCode()).toThrow();
   expect(() => compileAndroidCode()).toThrow(Error);
 
-  // You can also use the exact error message or a regexp
+  // You can also use a string that must be contained in the error message or a regexp
   expect(() => compileAndroidCode()).toThrow('you are using the wrong JDK');
   expect(() => compileAndroidCode()).toThrow(/JDK/);
+
+  // Or you can match an exact error mesage using a regexp like below
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK$/); // Test fails
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK!$/); // Test pass
 });
 ```
 

website/versioned_docs/version-25.x/UsingMatchers.md

@@ -142,16 +142,20 @@ If you want to test whether a particular function throws an error when it's call
 
 ```js
 function compileAndroidCode() {
-  throw new Error('you are using the wrong JDK');
+  throw new Error('you are using the wrong JDK!');
 }
 
 test('compiling android goes as expected', () => {
   expect(() => compileAndroidCode()).toThrow();
   expect(() => compileAndroidCode()).toThrow(Error);
 
-  // You can also use the exact error message or a regexp
+  // You can also use a string that must be contained in the error message or a regexp
   expect(() => compileAndroidCode()).toThrow('you are using the wrong JDK');
   expect(() => compileAndroidCode()).toThrow(/JDK/);
+
+  // Or you can match an exact error mesage using a regexp like below
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK$/); // Test fails
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK!$/); // Test pass
 });
 ```
 

website/versioned_docs/version-26.x/UsingMatchers.md

@@ -142,16 +142,20 @@ If you want to test whether a particular function throws an error when it's call
 
 ```js
 function compileAndroidCode() {
-  throw new Error('you are using the wrong JDK');
+  throw new Error('you are using the wrong JDK!');
 }
 
 test('compiling android goes as expected', () => {
   expect(() => compileAndroidCode()).toThrow();
   expect(() => compileAndroidCode()).toThrow(Error);
 
-  // You can also use the exact error message or a regexp
+  // You can also use a string that must be contained in the error message or a regexp
   expect(() => compileAndroidCode()).toThrow('you are using the wrong JDK');
   expect(() => compileAndroidCode()).toThrow(/JDK/);
+
+  // Or you can match an exact error mesage using a regexp like below
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK$/); // Test fails
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK!$/); // Test pass
 });
 ```
 

website/versioned_docs/version-27.x/UsingMatchers.md

@@ -142,16 +142,20 @@ If you want to test whether a particular function throws an error when it's call
 
 ```js
 function compileAndroidCode() {
-  throw new Error('you are using the wrong JDK');
+  throw new Error('you are using the wrong JDK!');
 }
 
 test('compiling android goes as expected', () => {
   expect(() => compileAndroidCode()).toThrow();
   expect(() => compileAndroidCode()).toThrow(Error);
 
-  // You can also use the exact error message or a regexp
+  // You can also use a string that must be contained in the error message or a regexp
   expect(() => compileAndroidCode()).toThrow('you are using the wrong JDK');
   expect(() => compileAndroidCode()).toThrow(/JDK/);
+
+  // Or you can match an exact error mesage using a regexp like below
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK$/); // Test fails
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK!$/); // Test pass
 });
 ```
 

website/versioned_docs/version-28.x/UsingMatchers.md

@@ -142,16 +142,20 @@ If you want to test whether a particular function throws an error when it's call
 
 ```js
 function compileAndroidCode() {
-  throw new Error('you are using the wrong JDK');
+  throw new Error('you are using the wrong JDK!');
 }
 
 test('compiling android goes as expected', () => {
   expect(() => compileAndroidCode()).toThrow();
   expect(() => compileAndroidCode()).toThrow(Error);
 
-  // You can also use the exact error message or a regexp
+  // You can also use a string that must be contained in the error message or a regexp
   expect(() => compileAndroidCode()).toThrow('you are using the wrong JDK');
   expect(() => compileAndroidCode()).toThrow(/JDK/);
+
+  // Or you can match an exact error mesage using a regexp like below
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK$/); // Test fails
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK!$/); // Test pass
 });
 ```
 

website/versioned_docs/version-29.0/UsingMatchers.md

@@ -142,16 +142,20 @@ If you want to test whether a particular function throws an error when it's call
 
 ```js
 function compileAndroidCode() {
-  throw new Error('you are using the wrong JDK');
+  throw new Error('you are using the wrong JDK!');
 }
 
 test('compiling android goes as expected', () => {
   expect(() => compileAndroidCode()).toThrow();
   expect(() => compileAndroidCode()).toThrow(Error);
 
-  // You can also use the exact error message or a regexp
+  // You can also use a string that must be contained in the error message or a regexp
   expect(() => compileAndroidCode()).toThrow('you are using the wrong JDK');
   expect(() => compileAndroidCode()).toThrow(/JDK/);
+
+  // Or you can match an exact error mesage using a regexp like below
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK$/); // Test fails
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK!$/); // Test pass
 });
 ```
 

website/versioned_docs/version-29.1/UsingMatchers.md

@@ -142,16 +142,20 @@ If you want to test whether a particular function throws an error when it's call
 
 ```js
 function compileAndroidCode() {
-  throw new Error('you are using the wrong JDK');
+  throw new Error('you are using the wrong JDK!');
 }
 
 test('compiling android goes as expected', () => {
   expect(() => compileAndroidCode()).toThrow();
   expect(() => compileAndroidCode()).toThrow(Error);
 
-  // You can also use the exact error message or a regexp
+  // You can also use a string that must be contained in the error message or a regexp
   expect(() => compileAndroidCode()).toThrow('you are using the wrong JDK');
   expect(() => compileAndroidCode()).toThrow(/JDK/);
+
+  // Or you can match an exact error mesage using a regexp like below
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK$/); // Test fails
+  expect(() => compileAndroidCode()).toThrow(/^you are using the wrong JDK!$/); // Test pass
 });
 ```