例如,假设您有以下组件:
import { Another } from "./Another";
@Component({
entryComponents: [
Another
]
})
export class App {}
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即使在使用时NO_ERRORS_SCHEMA我仍然必须包含Another作为测试声明的一部分:
import { ComponentFixture, TestBed } from "@angular/core/testing";
import { NO_ERRORS_SCHEMA } from '@angular/core';
import { App } from "./App";
import { Another } from "./Another";
describe("App", () => {
let comp: App;
let fixture: ComponentFixture<App>;
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [ App, Another ],
schemas: [ NO_ERRORS_SCHEMA ]
});
fixture = TestBed.createComponent(App);
comp = fixture.componentInstance;
});
it("can load …Run Code Online (Sandbox Code Playgroud) 当我尝试安装ZenTest时:
gem install ZenTest
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我收到以下错误:
[C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/specifications/ZenTest-4.8.4.gemspec]中的gemspec无效:格式错误的要求["<2.1,> = 1.8"]
我试图清理宝石并删除ZenTest无济于事.
怎么了?
你如何添加上下文菜单?(在资源管理器和/或编辑器中)
我尝试了以下不起作用:
{
"command": "extension.sayHello",
"title": "Say Hello",
"context": {
"where": "explorer/context",
"when": "json"
}
}
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这是基于:
在测试具有子组件的组件时,您有以下几种选择:
NO_ERRORS_SCHEMA和忽略子组件.鉴于大多数时候你只关心当前的组件,为什么NO_ERRORS_SCHEMA在测试教程,博客文章等中没有给予更多关注?
我知道它被标记为实验性的,但我并不为此感到困扰
那么有问题NO_ERRORS_SCHEMA吗?或者只是偶然的事情,它不会被提升更多?
Say you have a file with:
AddReactImport();
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And the plugin:
export default function ({types: t }) {
return {
visitor: {
CallExpression(p) {
if (p.node.callee.name === "AddReactImport") {
// add import if it's not there
}
}
}
};
}
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How do you add import React from 'react'; at the top of the file/tree if it's not there already.
I think more important than the answer is how you find out how to do it. Please tell me because I'm …
使用以下XAML,取消选中该复选框时会隐藏底行.一切顺利,直到你用网格探测器调整大小.然后选中/取消选中该复选框不会执行任何操作.鉴于转换器将高度设置为0,我希望该行隐藏.这是怎么回事?移动分离器后如何重置高度?
<Grid>
<Grid.Resources>
<m:CheckedToLengthConverter x:Key="checkedToLengthConverter" />
</Grid.Resources>
<Grid.RowDefinitions>
<RowDefinition Height="3*" />
<RowDefinition Height="{Binding Mode=OneWay, ElementName=ShowBottomCheckBox, Path=IsChecked, Converter={StaticResource checkedToLengthConverter}, ConverterParameter=2}" />
</Grid.RowDefinitions>
<Border Background="Blue" />
<CheckBox Name="ShowBottomCheckBox" IsChecked="True" />
<GridSplitter HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Height="5" />
<Border Background="Red" Grid.Row="1" />
</Grid>
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转换器:
public class CheckedToLengthConverter: IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if ((bool)value)
return new GridLength(int.Parse(parameter.ToString()), GridUnitType.Star);
return new GridLength(0, GridUnitType.Pixel);
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException(); …Run Code Online (Sandbox Code Playgroud) 我在Notepad ++中为Haml文件创建了一个用户定义的语言.所有Consolas/10都是全面的.除了空格与字母长度不同外,样式应用得很好.可能有什么不对?

更新:
如果我将Ruby语言字体设置为Consolas/10,则空格的长度与字母的长度相同.

我有型号和产品.如果我使用category.products << new_product该项添加到数组中,则记录将保存到数据库中.我尝试将以下"add"方法添加到数组类中,虽然它确实将new_product添加到数组中,但它不会将其保存到数据库中.这是为什么?
class Array
def add(item)
self << item
end
end
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更新:
collection_proxy.rb具有以下方法:
def <<(*records)
proxy_association.concat(records) && self
end
alias_method :push, :<<
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所以以下扩展工作:
class ActiveRecord::Relation
def add(*records)
proxy_association.concat(records) && self
end
end
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解:
为CollectionProxy添加别名:
class ActiveRecord::Associations::CollectionProxy
alias_method :add, :<<
end
Run Code Online (Sandbox Code Playgroud) 我正在 Heroku 上测试一个应用程序,突然开发数据库离线了。postgres.heroku.com 在数据库上有以下信息:
\n\nStatistics\nPlan Dev\nStatus \nData Size 0 B\nTables 7\nPG Version ?\nCreated February 27, 2013 19:38\nRun Code Online (Sandbox Code Playgroud)\n\n日志说FATAL: role "-removed-" is not permitted to log in。
heroku 文档有错误,但它并没有真正帮助:
\n\nFATAL: role \xe2\x80\x9crole-name\xe2\x80\x9d\xe2\x80\xa6\n\nFATAL: role "u8akd9ajka" is not permitted to log in (PG::Error)\n\nThis occurs when you have de-provisioned a starter tier database but are still trying to connect to it. To resolve:\n\n If required, provision a new database via heroku addons:add heroku-postgresql\n Use heroku pg:promote HEROKU_POSTGRESQL_<new-database-color> to …Run Code Online (Sandbox Code Playgroud) 我正在为it_behaves_like,it_should_behave_like和include_examples获取未定义的方法.
测试是针对规格/功能的.我将文件包含在shared_examples/shared_examples_for中.
这是怎么回事?