fix(reactstrap#2521): fix form-check-label/form-label class on Label

Author: BenJenkinson

src/Label.js

@@ -93,13 +93,17 @@ const Label = (props) => {
     }
   });
 
+  const colFormLabel = size || colClasses.length;
+  const formLabel = !(check || colFormLabel);
+
   const classes = mapToCssModules(classNames(
     className,
     hidden ? 'visually-hidden' : false,
     check ? 'form-check-label' : false,
     size ? `col-form-label-${size}` : false,
     colClasses,
-    colClasses.length ? 'col-form-label' : 'form-label'
+    colFormLabel ? 'col-form-label' : false,
+    formLabel ? 'form-label' : false
   ), cssModule);
 
   return (

src/__tests__/Label.spec.js

@@ -27,12 +27,30 @@ describe('Label', () => {
     expect(wrapper.hasClass('col-form-label')).toBe(true);
   });
 
+  it('should not render with "form-label" class when a col is provided', () => {
+    const wrapper = shallow(<Label sm="6">Yo!</Label>);
+
+    expect(wrapper.hasClass("form-label")).toBe(false);
+  });
+
   it('should render with "form-label" class when a col is not provided', () => {
     const wrapper = shallow(<Label>Yo!</Label>);
 
     expect(wrapper.hasClass('form-label')).toBe(true);
   });
 
+  it('should render with "form-check-label" class when check is specified', () => {
+    const wrapper = shallow(<Label check>Yo!</Label>);
+
+    expect(wrapper.hasClass("form-check-label")).toBe(true);
+  });
+
+  it('should not render with "form-label" class when check is specified', () => {
+    const wrapper = shallow(<Label check>Yo!</Label>);
+
+    expect(wrapper.hasClass("form-label")).toBe(false);
+  });
+
   it('should pass col size specific classes as Strings', () => {
     const wrapper = shallow(<Label sm="6">Yo!</Label>);