Add <progress> to DOM fixtures (#18293)

* Add <progress> to DOM fixtures

* Remove uncontrolled

Author: bl00mber

fixtures/dom/src/components/Header.js

@@ -74,6 +74,7 @@ class Header extends React.Component {
                 <option value="/email-inputs">Email Input</option>
                 <option value="/selects">Selects</option>
                 <option value="/textareas">Textareas</option>
+                <option value="/progress">Progress</option>
                 <option value="/input-change-events">
                   Input change events
                 </option>

fixtures/dom/src/components/fixtures/progress/index.js

@@ -0,0 +1,87 @@
+import Fixture from '../../Fixture';
+import FixtureSet from '../../FixtureSet';
+import TestCase from '../../TestCase';
+
+const React = window.React;
+
+class ProgressFixture extends React.Component {
+  state = {value: 0, max: 1, enabled: false, backwards: false};
+
+  startTest = () => {
+    this.setState({enabled: true}, () => {
+      this.progressIntervalId = setInterval(() => {
+        if (this.state.backwards) {
+          if (this.state.value > 0) {
+            this.setState({value: this.state.value - this.state.max / 100});
+          } else {
+            if (this.state.max === 10000) {
+              this.resetTest();
+            } else {
+              this.setState({max: this.state.max * 100, backwards: false});
+            }
+          }
+        } else {
+          if (this.state.value < this.state.max) {
+            this.setState({value: this.state.value + this.state.max / 100});
+          } else {
+            this.setState({backwards: true});
+          }
+        }
+      }, 10);
+    });
+  };
+
+  resetTest = () => {
+    clearInterval(this.progressIntervalId);
+    this.setState({value: 0, max: 1, enabled: false, backwards: false});
+  };
+
+  render() {
+    return (
+      <FixtureSet title="Progress">
+        <TestCase title="Fill and reset progress bar">
+          <TestCase.Steps>
+            <li>Press enable button</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            When enabled, bar value should increase from 0% to 100% and
+            backwards during three step loop: 0-1, 0-100, 0-10000. Reset button
+            stops loop, sets value to 0 and max to 1.
+          </TestCase.ExpectedResult>
+
+          <Fixture>
+            <div className="control-box">
+              <fieldset>
+                <legend>Controlled</legend>
+                <progress
+                  value={this.state.value}
+                  max={this.state.max}></progress>
+                <button
+                  onClick={
+                    this.state.enabled ? this.resetTest : this.startTest
+                  }>
+                  {this.state.enabled ? 'Reset' : 'Enable'}
+                </button>
+                <br />
+                <span className="hint">
+                  {' '}
+                  max: {JSON.stringify(this.state.max)}
+                </span>
+                <span className="hint">
+                  {' '}
+                  value:{' '}
+                  {JSON.stringify(
+                    Math.round((this.state.value + Number.EPSILON) * 100) / 100
+                  )}
+                </span>
+              </fieldset>
+            </div>
+          </Fixture>
+        </TestCase>
+      </FixtureSet>
+    );
+  }
+}
+
+export default ProgressFixture;