Add JUnit Test for MaterialEmptyState

Author: kevzlou7979

src/main/java/gwt/material/design/addins/client/emptystate/MaterialEmptyState.java

@@ -153,6 +153,6 @@ public boolean isLoading() {
 
     public void setLoading(boolean loading) {
         this.loading = loading;
-        MaterialLoader.showLoading(true, icon);
+        MaterialLoader.showLoading(loading, icon);
     }
 }

src/test/java/gwt/material/design/addins/client/GwtMaterialAddinsTestComponent.java

@@ -84,6 +84,10 @@ public void testDocViewer() {
         new MaterialDocViewerTest().init();
     }
 
+    public void testEmptyState() {
+        new MaterialEmptyStateTest().init();
+    }
+
     public void testFileUploader() {
         new MaterialFileUploaderTest().init();
     }

src/test/java/gwt/material/design/addins/client/MaterialEmptyStateTest.java

@@ -0,0 +1,79 @@
+/*
+ * #%L
+ * GwtMaterial
+ * %%
+ * Copyright (C) 2015 - 2017 GwtMaterialDesign
+ * %%
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * #L%
+ */
+package gwt.material.design.addins.client;
+
+import com.google.gwt.user.client.ui.RootPanel;
+import gwt.material.design.addins.client.base.MaterialAddinsTest;
+import gwt.material.design.addins.client.base.constants.AddinsCssName;
+import gwt.material.design.addins.client.emptystate.MaterialEmptyState;
+import gwt.material.design.client.constants.CssName;
+import gwt.material.design.client.constants.IconType;
+import gwt.material.design.client.ui.MaterialIcon;
+import gwt.material.design.client.ui.MaterialTitle;
+import gwt.material.design.client.ui.html.Div;
+
+public class MaterialEmptyStateTest extends MaterialAddinsTest {
+
+    public void init() {
+        MaterialEmptyState emptyState = new MaterialEmptyState();
+        checkWidget(emptyState);
+        checkStructure(emptyState);
+        checkLoading(emptyState);
+    }
+
+    protected void checkStructure(MaterialEmptyState emptyState) {
+        final String TITLE = "title";
+        final String DESCRIPTION = "description";
+        final IconType ICON = IconType.POLL;
+
+        emptyState.setTitle(TITLE);
+        emptyState.setDescription(DESCRIPTION);
+        emptyState.setIconType(ICON);
+        RootPanel.get().add(emptyState);
+
+        assertTrue(emptyState.getElement().hasClassName(AddinsCssName.EMPTY_STATE));
+        assertTrue(emptyState.getElement().hasClassName(CssName.VALIGN_WRAPPER));
+
+        assertEquals(emptyState.getWidgetCount(), 1);
+        assertEquals(emptyState.getWidget(0), emptyState.getContainer());
+
+        Div container = emptyState.getContainer();
+        assertEquals(container.getWidgetCount(), 1);
+        assertTrue(container.getElement().hasClassName(CssName.VALIGN));
+        assertTrue(container.getElement().hasClassName(CssName.CENTER));
+
+        assertTrue(container.getWidget(0) instanceof MaterialTitle);
+        MaterialTitle title = (MaterialTitle) container.getWidget(0);
+
+        assertEquals(title.getHeader().getText(), TITLE);
+        assertEquals(title.getParagraph().getText(), DESCRIPTION);
+
+        assertTrue(title.getWidget(0) instanceof MaterialIcon);
+        MaterialIcon icon = (MaterialIcon) title.getWidget(0);
+        assertEquals(icon.getIconType(), ICON);
+    }
+
+    public void checkLoading(MaterialEmptyState emptyState) {
+        emptyState.setLoading(true);
+        assertTrue(emptyState.isLoading());
+        emptyState.setLoading(false);
+        assertFalse(emptyState.isLoading());
+    }
+}