fix(apiCheck): fieldOptionsApiShape now allows setting 'boolean' property on an ngModelAttrs definition

Fixes #451

Author: Caleb Kniffen

src/providers/formlyApiCheck.js

@@ -136,10 +136,11 @@ const fieldOptionsApiShape = {
   hideExpression: formlyExpression.optional,
   ngModelElAttrs: apiCheck.objectOf(apiCheck.string).optional,
   ngModelAttrs: apiCheck.objectOf(apiCheck.shape({
-    expression: apiCheck.shape.ifNot(['value', 'attribute', 'bound'], apiCheck.any).optional,
+    expression: apiCheck.shape.ifNot(['value', 'attribute', 'bound', 'boolean'], apiCheck.any).optional,
     value: apiCheck.shape.ifNot('expression', apiCheck.any).optional,
     attribute: apiCheck.shape.ifNot('expression', apiCheck.any).optional,
-    bound: apiCheck.shape.ifNot('expression', apiCheck.any).optional
+    bound: apiCheck.shape.ifNot('expression', apiCheck.any).optional,
+    boolean: apiCheck.shape.ifNot('expression', apiCheck.any).optional
   }).strict).optional,
   elementAttributes: apiCheck.objectOf(apiCheck.string).optional,
   optionsTypes: apiCheck.typeOrArrayOf(apiCheck.string).optional,

src/providers/formlyApiCheck.test.js

@@ -31,6 +31,23 @@ describe('formlyApiCheck', () => {
         key: 'whatevs'
       }, 'formlyFieldOptions');
     });
+
+    describe('ngModelAttrs', () => {
+      it(`should allow property of 'boolean'`, () => {
+        expectPass({
+          template: 'hello',
+          key: 'whatevs',
+          templateOptions: {
+            foo: 'bar'
+          },
+          ngModelAttrs: {
+            foo: {
+              boolean: 'foo-bar'
+            }
+          }
+        }, 'formlyFieldOptions');
+      });
+    });
   });
 
   describe(`fieldGroup`, () => {