[BUGFIX beta] Adding tests for #18732

(cherry picked from commit 004cea1)

packages/@ember/-internals/glimmer/tests/integration/components/contextual-components-test.js

@@ -1360,6 +1360,69 @@ moduleFor(
 
       this.assertStableRerender();
     }
+
+    ['@test GH#18732 hasBlock works within a yielded curried component invoked within mustaches'](assert) {
+      this.registerComponent('component-with-has-block', {
+        ComponentClass: Component.extend(),
+        template: '<div>{{hasBlock}}</div>'
+      });
+
+      this.registerComponent('yielding-component', {
+        ComponentClass: Component.extend(),
+        template: '{{yield (component "component-with-has-block")}}'
+      });
+
+      this.registerComponent('test-component', {
+        ComponentClass: Component.extend(),
+        template: '{{#yielding-component as |componentWithHasBlock|}}{{componentWithHasBlock}}{{/yielding-component}}'
+      });
+
+      this.render('{{test-component}}');
+
+      this.assertText('false');
+    }
+
+    ['@test GH#18732 has-block works within a yielded curried component invoked with angle bracket invocation (falsy)']() {
+      this.registerComponent('component-with-has-block', {
+        ComponentClass: Component.extend(),
+        template: '<div>{{hasBlock}}</div>'
+      });
+
+      this.registerComponent('yielding-component', {
+        ComponentClass: Component.extend(),
+        template: '{{yield (component "component-with-has-block")}}'
+      });
+
+      this.registerComponent('test-component', {
+        ComponentClass: Component.extend(),
+        template: '{{#yielding-component as |componentWithHasBlock|}}<componentWithHasBlock/>{{/yielding-component}}'
+      });
+
+      this.render('{{test-component}}');
+
+      this.assertText('false');
+    }
+
+    ['@test GH#18732 has-block works within a yielded curried component invoked with angle bracket invocation (truthy)']() {
+      this.registerComponent('component-with-has-block', {
+        ComponentClass: Component.extend(),
+        template: '<div>{{hasBlock}}</div>'
+      });
+
+      this.registerComponent('yielding-component', {
+        ComponentClass: Component.extend(),
+        template: '{{yield (component "component-with-has-block")}}'
+      });
+
+      this.registerComponent('test-component', {
+        ComponentClass: Component.extend(),
+        template: '{{#yielding-component as |componentWithHasBlock|}}<componentWithHasBlock></componentWithHasBlock>{{/yielding-component}}'
+      });
+
+      this.render('{{test-component}}');
+
+      this.assertText('true');
+    }
   }
 );