make toString() implimit since the classes are named identically

Author: quantizor

packages/expect/src/asymmetric_matchers.js

@@ -23,6 +23,10 @@ class AsymmetricMatcher {
   constructor() {
     this.$$typeof = Symbol.for('jest.asymmetricMatcher');
   }
+
+  toString() {
+    return this.constructor.name;
+  }
 }
 
 class Any extends AsymmetricMatcher {
@@ -63,10 +67,6 @@ class Any extends AsymmetricMatcher {
     return other instanceof this.sample;
   }
 
-  toString() {
-    return 'Any';
-  }
-
   getExpectedType() {
     if (this.sample == String) {
       return 'string';
@@ -101,10 +101,6 @@ class Anything extends AsymmetricMatcher {
     return !isUndefined(other) && other !== null;
   }
 
-  toString() {
-    return 'Anything';
-  }
-
   // No getExpectedType method, because it matches either null or undefined.
 
   toAsymmetricMatcher() {
@@ -136,10 +132,6 @@ class ArrayContaining extends AsymmetricMatcher {
     );
   }
 
-  toString() {
-    return 'ArrayContaining';
-  }
-
   getExpectedType() {
     return 'array';
   }
@@ -149,10 +141,6 @@ class ArrayNotContaining extends ArrayContaining {
   asymmetricMatch(other: Array<any>) {
     return !super.asymmetricMatch(other);
   }
-
-  toString() {
-    return 'ArrayNotContaining';
-  }
 }
 
 class ObjectContaining extends AsymmetricMatcher {
@@ -184,10 +172,6 @@ class ObjectContaining extends AsymmetricMatcher {
     return true;
   }
 
-  toString() {
-    return 'ObjectContaining';
-  }
-
   getExpectedType() {
     return 'object';
   }
@@ -216,10 +200,6 @@ class ObjectNotContaining extends ObjectContaining {
 
     return true;
   }
-
-  toString() {
-    return 'ObjectNotContaining';
-  }
 }
 
 class StringContaining extends AsymmetricMatcher {
@@ -241,10 +221,6 @@ class StringContaining extends AsymmetricMatcher {
     return other.includes(this.sample);
   }
 
-  toString() {
-    return 'StringContaining';
-  }
-
   getExpectedType() {
     return 'string';
   }
@@ -254,10 +230,6 @@ class StringNotContaining extends StringContaining {
   asymmetricMatch(other: string) {
     return !super.asymmetricMatch(other);
   }
-
-  toString() {
-    return 'StringNotContaining';
-  }
 }
 
 class StringMatching extends AsymmetricMatcher {
@@ -280,10 +252,6 @@ class StringMatching extends AsymmetricMatcher {
     return this.sample.test(other);
   }
 
-  toString() {
-    return 'StringMatching';
-  }
-
   getExpectedType() {
     return 'string';
   }