jest-matchers - npm Package Compare versions

Comparing version 17.0.2 to 17.0.3

build/matchers.js

@@ -36,2 +36,10 @@ /**
 
+
+
+
+
+
+
+
+
 const IteratorSymbol = Symbol.iterator;
@@ -301,10 +309,22 @@ const equals = global.jasmine.matchersUtil.equals;
     const collectionType = getType(collection);
-    if (!Array.isArray(collection) && typeof collection !== 'string') {
-      throw new Error(
-      `.toContain() only works with arrays and strings.\n` +
-      printWithType('Received', collection, printReceived));
 
+    let converted = null;
+    if (Array.isArray(collection) || typeof collection === 'string') {
+      // strings have `indexOf` so we don't need to convert
+      // arrays have `indexOf` and we don't want to make a copy
+      converted = collection;
+    } else {
+      try {
+        converted = Array.from(collection);
+      } catch (e) {
+        throw new Error(
+        matcherHint('[.not].toContainEqual', 'collection', 'value') + '\n\n' +
+        `Expected ${ RECEIVED_COLOR('collection') } to be an array-like structure.\n` +
+        printWithType('Received', collection, printReceived));
+
+      }
     }
-
-    const pass = collection.indexOf(value) != -1;
+    // At this point, we're either a string or an Array,
+    // which was converted from an array-like structure.
+    const pass = converted.indexOf(value) != -1;
     const message = pass ?
@@ -327,11 +347,19 @@ () => matcherHint('.not.toContain', collectionType, 'value') + '\n\n' +
     const collectionType = getType(collection);
-    if (!Array.isArray(collection)) {
-      throw new Error(
-      `.toContainEqual() only works with arrays.\n` +
-      printWithType('Received', collection, printReceived));
+    let converted = null;
+    if (Array.isArray(collection)) {
+      converted = collection;
+    } else {
+      try {
+        converted = Array.from(collection);
+      } catch (e) {
+        throw new Error(
+        matcherHint('[.not].toContainEqual', 'collection', 'value') + '\n\n' +
+        `Expected ${ RECEIVED_COLOR('collection') } to be an array-like structure.\n` +
+        printWithType('Received', collection, printReceived));
 
+      }
     }
 
     const pass =
-    collection.findIndex(item => equals(item, value, [iterableEquality])) !== -1;
+    converted.findIndex(item => equals(item, value, [iterableEquality])) !== -1;
     const message = pass ?
@@ -376,2 +404,40 @@ () => matcherHint('.not.toContainEqual', collectionType, 'value') + '\n\n' +
 
+  toHaveLength(received, length) {
+    if (
+    typeof received !== 'string' && (
+    !received || typeof received.length !== 'number'))
+    {
+      throw new Error(
+      matcherHint('[.not].toHaveLength', 'received', 'length') + '\n\n' +
+      `Expected value to have a 'length' prorerty that is a number. ` +
+      `Received:\n` +
+      `  ${ printReceived(received) }\n` + (
+
+      received ?
+      `received.length:\n  ${ printReceived(received.length) }` :
+      ''));
+
+
+    }
+
+    const pass = received.length === length;
+    const message = pass ?
+    () => matcherHint('.not.toHaveLength', 'received', 'length') + '\n\n' +
+    `Expected value to not have length:\n` +
+    `  ${ printExpected(length) }\n` +
+    `Received:\n` +
+    `  ${ printReceived(received) }\n` +
+    `received.length:\n` +
+    `  ${ printReceived(received.length) }` :
+    () => matcherHint('.toHaveLength', 'received', 'length') + '\n\n' +
+    `Expected value to have length:\n` +
+    `  ${ printExpected(length) }\n` +
+    `Received:\n` +
+    `  ${ printReceived(received) }\n` +
+    `received.length:\n` +
+    `  ${ printReceived(received.length) }`;
+
+    return { message, pass };
+  },
+
   toMatch(received, expected) {
@@ -378,0 +444,0 @@ if (typeof received !== 'string') {

package.json

 {
   "name": "jest-matchers",
-  "version": "17.0.2",
+  "version": "17.0.3",
   "repository": {
@@ -11,4 +11,4 @@ "type": "git",
   "dependencies": {
-    "jest-diff": "^17.0.2",
-    "jest-matcher-utils": "^17.0.1",
+    "jest-diff": "^17.0.3",
+    "jest-matcher-utils": "^17.0.3",
     "jest-util": "^17.0.2"
@@ -15,0 +15,0 @@ },

No alert changes

Improved metrics

Total package byte prevSize

30790

increased by6.75%

Lines of code

786

increased by7.08%

Dependency changes

• Updatedjest-diff@^17.0.3

• Updatedjest-matcher-utils@^17.0.3