/**
 * @license
 * Copyright 2019 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */

goog.declareModuleId('Blockly.test.fieldTest');

import * as Blockly from '../../build/src/core/blockly.js';
import {addBlockTypeToCleanup, addMessageToCleanup, sharedTestSetup, sharedTestTeardown, workspaceTeardown} from './test_helpers/setup_teardown.js';
import {createDeprecationWarningStub} from './test_helpers/warnings.js';


suite('Abstract Fields', function() {
  setup(function() {
    sharedTestSetup.call(this);
  });

  teardown(function() {
    sharedTestTeardown.call(this);
  });

  suite('Is Serializable', function() {
    // Both EDITABLE and SERIALIZABLE are default.
    class FieldDefault extends Blockly.Field {
      constructor() {
        super();
        this.name = 'NAME';
      }
    }

    // EDITABLE is false and SERIALIZABLE is default.
    class FieldFalseDefault extends Blockly.Field {
      constructor() {
        super();
        this.name = 'NAME';
        this.EDITABLE = false;
      }
    }

    // EDITABLE is default and SERIALIZABLE is true.
    class FieldDefaultTrue extends Blockly.Field {
      constructor() {
        super();
        this.name = 'NAME';
        this.SERIALIZABLE = true;
      }
    }

    // EDITABLE is false and SERIALIZABLE is true.
    class FieldFalseTrue extends Blockly.Field {
      constructor() {
        super();
        this.name = 'NAME';
        this.EDITABLE = false;
        this.SERIALIZABLE = true;
      }
    }

    /* Test Backwards Compatibility */
    test('Editable Default(true), Serializable Default(false)', function() {
      // An old default field should be serialized.
      const field = new FieldDefault();
      const stub = sinon.stub(console, 'warn');
      chai.assert.isTrue(field.isSerializable());
      sinon.assert.calledOnce(stub);
      stub.restore();
    });
    test('Editable False, Serializable Default(false)', function() {
      // An old non-editable field should not be serialized.
      const field = new FieldFalseDefault();
      chai.assert.isFalse(field.isSerializable());
    });
    /* Test Other Cases */
    test('Editable Default(true), Serializable True', function() {
      // A field that is both editable and serializable should be serialized.
      const field = new FieldDefaultTrue();
      chai.assert.isTrue(field.isSerializable());
    });
    test('Editable False, Serializable True', function() {
      // A field that is not editable, but overrides serializable to true
      // should be serialized (e.g. field_label_serializable)
      const field = new FieldFalseTrue();
      chai.assert.isTrue(field.isSerializable());
    });
  });

  suite('Serialization', function() {
    class DefaultSerializationField extends Blockly.Field {
      constructor(value, validator = undefined, config = undefined) {
        super(value, validator, config);
        this.SERIALIZABLE = true;
      }
    }

    class CustomXmlField extends Blockly.Field {
      constructor(value, validator = undefined, config = undefined) {
        super(value, validator, config);
        this.SERIALIZABLE = true;
      }

      toXml(fieldElement) {
        fieldElement.textContent = 'custom value';
        return fieldElement;
      }

      fromXml(fieldElement) {
        this.someProperty = fieldElement.textContent;
      }
    }

    class CustomXmlCallSuperField extends Blockly.Field {
      constructor(value, validator = undefined, config = undefined) {
        super(value, validator, config);
        this.SERIALIZABLE = true;
      }

      toXml(fieldElement) {
        super.toXml(fieldElement);
        fieldElement.setAttribute('attribute', 'custom value');
        return fieldElement;
      }

      fromXml(fieldElement) {
        super.fromXml(fieldElement);
        this.someProperty = fieldElement.getAttribute('attribute');
      }
    }

    class CustomJsoField extends Blockly.Field {
      constructor(value, validator = undefined, config = undefined) {
        super(value, validator, config);
        this.SERIALIZABLE = true;
      }

      saveState() {
        return 'custom value';
      }

      loadState(state) {
        this.someProperty = state;
      }
    }

    class CustomJsoCallSuperField extends Blockly.Field {
      constructor(value, validator = undefined, config = undefined) {
        super(value, validator, config);
        this.SERIALIZABLE = true;
      }

      saveState() {
        return {
          default: super.saveState(),
          val: 'custom value',
        };
      }

      loadState(state) {
        super.loadState(state.default);
        this.someProperty = state.val;
      }
    }

    class CustomXmlAndJsoField extends Blockly.Field {
      constructor(value, validator = undefined, config = undefined) {
        super(value, validator, config);
        this.SERIALIZABLE = true;
      }

      toXml(fieldElement) {
        fieldElement.textContent = 'custom value';
        return fieldElement;
      }

      fromXml(fieldElement) {
        this.someProperty = fieldElement.textContent;
      }

      saveState() {
        return 'custom value';
      }

      loadState(state) {
        this.someProperty = state;
      }
    }

    suite('Save', function() {
      suite('JSO', function() {
        test('No implementations', function() {
          const field = new DefaultSerializationField('test value');
          const value = field.saveState();
          chai.assert.equal(value, 'test value');
        });

        test('Xml implementations', function() {
          const field = new CustomXmlField('test value');
          const value = field.saveState();
          chai.assert.equal(value, '<field name="">custom value</field>');
        });

        test('Xml super implementation', function() {
          const field = new CustomXmlCallSuperField('test value');
          const value = field.saveState();
          chai.assert.equal(
              value,
              '<field name="" attribute="custom value">test value</field>');
        });

        test('JSO implementations', function() {
          const field = new CustomJsoField('test value');
          const value = field.saveState();
          chai.assert.equal(value, 'custom value');
        });

        test('JSO super implementations', function() {
          const field = new CustomJsoCallSuperField('test value');
          const value = field.saveState();
          chai.assert.deepEqual(
              value, {default: 'test value', val: 'custom value'});
        });

        test('Xml and JSO implementations', function() {
          const field = new CustomXmlAndJsoField('test value');
          const value = field.saveState();
          chai.assert.equal(value, 'custom value');
        });
      });

      suite('Xml', function() {
        test('No implementations', function() {
          const field = new DefaultSerializationField('test value');
          const element = document.createElement('field');
          const value = Blockly.Xml.domToText(field.toXml(element));
          chai.assert.equal(
              value,
              '<field xmlns="http://www.w3.org/1999/xhtml">test value</field>');
        });

        test('Xml implementations', function() {
          const field = new CustomXmlField('test value');
          const element = document.createElement('field');
          const value = Blockly.Xml.domToText(field.toXml(element));
          chai.assert.equal(
              value,
              '<field xmlns="http://www.w3.org/1999/xhtml">custom value</field>'
          );
        });

        test('Xml super implementation', function() {
          const field = new CustomXmlCallSuperField('test value');
          const element = document.createElement('field');
          const value = Blockly.Xml.domToText(field.toXml(element));
          chai.assert.equal(
              value,
              '<field xmlns="http://www.w3.org/1999/xhtml" ' +
              'attribute="custom value">test value</field>');
        });

        test('Xml and JSO implementations', function() {
          const field = new CustomXmlAndJsoField('test value');
          const element = document.createElement('field');
          const value = Blockly.Xml.domToText(field.toXml(element));
          chai.assert.equal(
              value,
              '<field xmlns="http://www.w3.org/1999/xhtml">custom value</field>'
          );
        });
      });
    });

    suite('Load', function() {
      suite('JSO', function() {
        test('No implementations', function() {
          const field = new DefaultSerializationField('');
          field.loadState('test value');
          chai.assert.equal(field.getValue(), 'test value');
        });

        test('Xml implementations', function() {
          const field = new CustomXmlField('');
          field.loadState('<field name="">custom value</field>');
          chai.assert.equal(field.someProperty, 'custom value');
        });

        test('Xml super implementation', function() {
          const field = new CustomXmlCallSuperField('');
          field.loadState(
              '<field attribute="custom value" name="">test value</field>');
          chai.assert.equal(field.getValue(), 'test value');
          chai.assert.equal(field.someProperty, 'custom value');
        });

        test('JSO implementations', function() {
          const field = new CustomJsoField('');
          field.loadState('custom value');
          chai.assert.equal(field.someProperty, 'custom value');
        });

        test('JSO super implementations', function() {
          const field = new CustomJsoCallSuperField('');
          field.loadState({default: 'test value', val: 'custom value'});
          chai.assert.equal(field.getValue(), 'test value');
          chai.assert.equal(field.someProperty, 'custom value');
        });

        test('Xml and JSO implementations', function() {
          const field = new CustomXmlAndJsoField('');
          field.loadState('custom value');
          chai.assert.equal(field.someProperty, 'custom value');
        });
      });

      suite('Xml', function() {
        test('No implementations', function() {
          const field = new DefaultSerializationField('');
          field.fromXml(
              Blockly.Xml.textToDom('<field name="">test value</field>'));
          chai.assert.equal(field.getValue(), 'test value');
        });

        test('Xml implementations', function() {
          const field = new CustomXmlField('');
          field.fromXml(
              Blockly.Xml.textToDom('<field name="">custom value</field>'));
          chai.assert.equal(field.someProperty, 'custom value');
        });

        test('Xml super implementation', function() {
          const field = new CustomXmlCallSuperField('');
          field.fromXml(
              Blockly.Xml.textToDom(
                  '<field attribute="custom value" name="">test value</field>'
              )
          );
          chai.assert.equal(field.getValue(), 'test value');
          chai.assert.equal(field.someProperty, 'custom value');
        });

        test('XML andd JSO implementations', function() {
          const field = new CustomXmlAndJsoField('');
          field.fromXml(
              Blockly.Xml.textToDom('<field name="">custom value</field>'));
          chai.assert.equal(field.someProperty, 'custom value');
        });
      });
    });
  });

  suite('setValue', function() {
    function addSpies(field, excludeSpies = []) {
      if (!excludeSpies.includes('doValueInvalid_')) {
        sinon.spy(field, 'doValueInvalid_');
      }
      if (!excludeSpies.includes('doValueUpdate_')) {
        sinon.spy(field, 'doValueUpdate_');
      }
      if (!excludeSpies.includes('forceRerender')) {
        sinon.spy(field, 'forceRerender');
      }
    }
    function stubDoValueInvalid(field, isDirty) {
      sinon.stub(field, 'doValueInvalid_').callsFake(function(newValue) {
        this.isDirty_ = isDirty;
      });
    }
    function stubDoValueUpdate(field, isDirty) {
      sinon.stub(field, 'doValueUpdate_').callsFake(function(newValue) {
        this.isDirty_ = isDirty;
      });
    }
    function setLocalValidatorWithReturn(field, value) {
      field.setValidator(function() {
        return value;
      });
    }
    function setLocalValidator(field, isValid) {
      if (isValid) {
        field.setValidator(function(newValue) {
          return newValue;
        });
      } else {
        setLocalValidatorWithReturn(field, null);
      }
    }
    function stubClassValidatorWithReturn(field, value) {
      sinon.stub(field, 'doClassValidation_').returns(value);
    }
    function stubClassValidator(field, isValid) {
      if (isValid) {
        sinon.stub(field, 'doClassValidation_').callsFake(function(newValue) {
          return newValue;
        });
      } else {
        stubClassValidatorWithReturn(field, null);
      }
    }
    setup(function() {
      this.field = new Blockly.Field();
      this.field.isDirty_ = false;
    });
    test('Null', function() {
      addSpies(this.field);
      this.field.setValue(null);
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.notCalled(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('No Validators, Dirty (Default)', function() {
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.calledOnce(this.field.forceRerender);
    });
    test('No Validators, Not Dirty', function() {
      stubDoValueUpdate(this.field, false);
      addSpies(this.field, ['doValueUpdate_']);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('Class Validator Returns Invalid, Not Dirty (Default)', function() {
      stubClassValidator(this.field, false);
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.calledOnce(this.field.doValueInvalid_);
      sinon.assert.notCalled(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('Class Validator Returns Invalid, Dirty', function() {
      stubClassValidator(this.field, false);
      stubDoValueInvalid(this.field, true);
      addSpies(this.field, ['doValueInvalid_']);
      this.field.setValue('value');
      sinon.assert.calledOnce(this.field.doValueInvalid_);
      sinon.assert.notCalled(this.field.doValueUpdate_);
      sinon.assert.calledOnce(this.field.forceRerender);
    });
    test('Class Validator Returns Valid, Not Dirty', function() {
      stubClassValidator(this.field, true);
      stubDoValueUpdate(this.field, false);
      addSpies(this.field, ['doValueUpdate_']);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('Class Validator Returns Valid, Dirty (Default)', function() {
      stubClassValidator(this.field, true);
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.calledOnce(this.field.forceRerender);
    });
    test('Local Validator Returns Invalid, Not Dirty (Default)', function() {
      setLocalValidator(this.field, false);
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.calledOnce(this.field.doValueInvalid_);
      sinon.assert.notCalled(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('Local Validator Returns Invalid, Dirty', function() {
      stubDoValueInvalid(this.field, true);
      setLocalValidator(this.field, false);
      addSpies(this.field, ['doValueInvalid_']);
      this.field.setValue('value');
      sinon.assert.calledOnce(this.field.doValueInvalid_);
      sinon.assert.notCalled(this.field.doValueUpdate_);
      sinon.assert.calledOnce(this.field.forceRerender);
    });
    test('Local Validator Returns Valid, Not Dirty', function() {
      stubDoValueUpdate(this.field, false);
      setLocalValidator(this.field, true);
      addSpies(this.field, ['doValueUpdate_']);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('Local Validator Returns Valid, Dirty (Default)', function() {
      setLocalValidator(this.field, true);
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.calledOnce(this.field.forceRerender);
    });
    test('New Value Matches Old Value', function() {
      this.field.setValue('value');
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('New Value (Class)Validates to Old Value', function() {
      this.field.setValue('value');
      stubClassValidatorWithReturn(this.field, 'value');
      addSpies(this.field);
      this.field.setValue('notValue');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('New Value (Local)Validates to Old Value', function() {
      this.field.setValue('value');
      setLocalValidatorWithReturn(this.field, 'value');
      addSpies(this.field);
      this.field.setValue('notValue');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
      sinon.assert.notCalled(this.field.forceRerender);
    });
    test('New Value (Class)Validates to not Old Value', function() {
      this.field.setValue('value');
      stubClassValidatorWithReturn(this.field, 'notValue');
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
    });
    test('New Value (Local)Validates to not Old Value', function() {
      this.field.setValue('value');
      setLocalValidatorWithReturn(this.field, 'notValue');
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
    });
    test('Class Validator Returns Null', function() {
      stubClassValidatorWithReturn(this.field, null);
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.calledOnce(this.field.doValueInvalid_);
      sinon.assert.notCalled(this.field.doValueUpdate_);
    });
    test('Class Validator Returns Same', function() {
      sinon.stub(this.field, 'doClassValidation_').callsFake(
          function(newValue) {
            return newValue;
          });
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
    });
    test('Class Validator Returns Different', function() {
      stubClassValidatorWithReturn(this.field, 'differentValue');
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
    });
    test('Class Validator Returns Undefined', function() {
      stubClassValidatorWithReturn(this.field, undefined);
      addSpies(this.field);
      this.field.setValue('value');
      chai.assert.equal(this.field.getValue(), 'value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
    });
    test('Local Validator Returns Null', function() {
      setLocalValidatorWithReturn(this.field, null);
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.calledOnce(this.field.doValueInvalid_);
      sinon.assert.notCalled(this.field.doValueUpdate_);
    });
    test('Local Validator Returns Same', function() {
      this.field.setValidator(function(newValue) {
        return newValue;
      });
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
    });
    test('Local Validator Returns Different', function() {
      setLocalValidatorWithReturn(this.field, 'differentValue');
      addSpies(this.field);
      this.field.setValue('value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
    });
    test('Local Validator Returns Undefined', function() {
      setLocalValidatorWithReturn(this.field, undefined);
      addSpies(this.field);
      this.field.setValue('value');
      chai.assert.equal(this.field.getValue(), 'value');
      sinon.assert.notCalled(this.field.doValueInvalid_);
      sinon.assert.calledOnce(this.field.doValueUpdate_);
    });
  });

  suite('Customization', function() {
    // All this field does is wrap the abstract field.
    class CustomField extends Blockly.Field {
      constructor(opt_config) {
        super('value', null, opt_config);
      }

      static fromJson(options) {
        return new CustomField(options);
      }
    }

    suite('Tooltip', function() {
      test('JS Constructor', function() {
        const field = new Blockly.Field('value', null, {
          tooltip: 'test tooltip',
        });
        chai.assert.equal(field.tooltip_, 'test tooltip');
      });
      test('JS Constructor - Dynamic', function() {
        const returnTooltip = function() {
          return 'dynamic tooltip text';
        };
        const field = new Blockly.Field('value', null, {
          tooltip: returnTooltip,
        });
        chai.assert.equal(field.tooltip_, returnTooltip);
      });
      test('JSON Definition', function() {
        const field = CustomField.fromJson({
          tooltip: "test tooltip",
        });
        chai.assert.equal(field.tooltip_, 'test tooltip');
      });
      suite('W/ Msg References', function() {
        setup(function() {
          addMessageToCleanup(this.sharedCleanup, 'TOOLTIP');
          Blockly.Msg['TOOLTIP'] = 'test tooltip';
        });
        test('JS Constructor', function() {
          const field = new Blockly.Field('value', null, {
            tooltip: '%{BKY_TOOLTIP}',
          });
          chai.assert.equal(field.tooltip_, 'test tooltip');
        });
        test('JSON Definition', function() {
          const field = CustomField.fromJson({
            tooltip: "%{BKY_TOOLTIP}",
          });
          chai.assert.equal(field.tooltip_, 'test tooltip');
        });
      });
      suite('setTooltip', function() {
        setup(function() {
          this.workspace = new Blockly.WorkspaceSvg(new Blockly.Options({}));
          this.workspace.createDom();
        });
        teardown(function() {
          workspaceTeardown.call(this, this.workspace);
        });
        test('Before Append', function() {
          addBlockTypeToCleanup(this.sharedCleanup, 'tooltip');
          Blockly.Blocks['tooltip'] = {
            init: function() {
              const field = new Blockly.FieldTextInput('default');
              field.setTooltip('tooltip');
              this.appendDummyInput()
                  .appendField(field, 'TOOLTIP');
            },
          };
          const block = Blockly.Xml.domToBlock(Blockly.Xml.textToDom(
              '<xml xmlns="https://developers.google.com/blockly/xml">' +
              '  <block type="tooltip"></block>' +
              '</xml>'
          ).children[0], this.workspace);
          const field = block.getField('TOOLTIP');
          chai.assert.equal(field.getClickTarget_().tooltip, 'tooltip');
        });
        test('After Append', function() {
          addBlockTypeToCleanup(this.sharedCleanup, 'tooltip');
          Blockly.Blocks['tooltip'] = {
            init: function() {
              const field = new Blockly.FieldTextInput('default');
              this.appendDummyInput()
                  .appendField(field, 'TOOLTIP');
              field.setTooltip('tooltip');
            },
          };
          const block = Blockly.Xml.domToBlock(Blockly.Xml.textToDom(
              '<xml xmlns="https://developers.google.com/blockly/xml">' +
              '  <block type="tooltip"></block>' +
              '</xml>'
          ).children[0], this.workspace);
          const field = block.getField('TOOLTIP');
          chai.assert.equal(field.getClickTarget_().tooltip, 'tooltip');
        });
        test('After Block Creation', function() {
          addBlockTypeToCleanup(this.sharedCleanup, 'tooltip');
          Blockly.Blocks['tooltip'] = {
            init: function() {
              const field = new Blockly.FieldTextInput('default');
              this.appendDummyInput()
                  .appendField(field, 'TOOLTIP');
            },
          };
          const block = Blockly.Xml.domToBlock(Blockly.Xml.textToDom(
              '<xml xmlns="https://developers.google.com/blockly/xml">' +
              '  <block type="tooltip"></block>' +
              '</xml>'
          ).children[0], this.workspace);
          const field = block.getField('TOOLTIP');
          field.setTooltip('tooltip');
          chai.assert.equal(field.getClickTarget_().tooltip, 'tooltip');
        });
        test('Dynamic Function', function() {
          addBlockTypeToCleanup(this.sharedCleanup, 'tooltip');
          Blockly.Blocks['tooltip'] = {
            init: function() {
              const field = new Blockly.FieldTextInput('default');
              field.setTooltip(this.tooltipFunc);
              this.appendDummyInput()
                  .appendField(field, 'TOOLTIP');
            },

            tooltipFunc: function() {
              return this.getFieldValue('TOOLTIP');
            },
          };
          const block = Blockly.Xml.domToBlock(Blockly.Xml.textToDom(
              '<xml xmlns="https://developers.google.com/blockly/xml">' +
              '  <block type="tooltip"></block>' +
              '</xml>'
          ).children[0], this.workspace);
          const field = block.getField('TOOLTIP');
          chai.assert.equal(field.getClickTarget_().tooltip, block.tooltipFunc);
        });
        test('Element', function() {
          addBlockTypeToCleanup(this.sharedCleanup, 'tooltip');
          Blockly.Blocks['tooltip'] = {
            init: function() {
              const field = new Blockly.FieldTextInput('default');
              field.setTooltip(this.element);
              this.appendDummyInput()
                  .appendField(field, 'TOOLTIP');
            },
            element: {
              tooltip: 'tooltip',
            },
          };
          const block = Blockly.Xml.domToBlock(Blockly.Xml.textToDom(
              '<xml xmlns="https://developers.google.com/blockly/xml">' +
              '  <block type="tooltip"></block>' +
              '</xml>'
          ).children[0], this.workspace);
          const field = block.getField('TOOLTIP');
          chai.assert.equal(field.getClickTarget_().tooltip, block.element);
        });
        test('Null', function() {
          addBlockTypeToCleanup(this.sharedCleanup, 'tooltip');
          Blockly.Blocks['tooltip'] = {
            init: function() {
              const field = new Blockly.FieldTextInput('default');
              field.setTooltip(null);
              this.appendDummyInput()
                  .appendField(field, 'TOOLTIP');
            },
          };
          const block = Blockly.Xml.domToBlock(Blockly.Xml.textToDom(
              '<xml xmlns="https://developers.google.com/blockly/xml">' +
              '  <block type="tooltip"></block>' +
              '</xml>'
          ).children[0], this.workspace);
          const field = block.getField('TOOLTIP');
          chai.assert.equal(field.getClickTarget_().tooltip, block);
        });
        test('Undefined', function() {
          addBlockTypeToCleanup(this.sharedCleanup, 'tooltip');
          Blockly.Blocks['tooltip'] = {
            init: function() {
              const field = new Blockly.FieldTextInput('default');
              this.appendDummyInput()
                  .appendField(field, 'TOOLTIP');
            },
          };
          const block = Blockly.Xml.domToBlock(Blockly.Xml.textToDom(
              '<xml xmlns="https://developers.google.com/blockly/xml">' +
              '  <block type="tooltip"></block>' +
              '</xml>'
          ).children[0], this.workspace);
          const field = block.getField('TOOLTIP');
          chai.assert.equal(field.getClickTarget_().tooltip, block);
        });
      });
    });
  });
});