英文:
jest error TS18047 "object is possible null"
问题
以下是翻译好的部分：
我正在为一个 Angular 组件编写一个测试（jtest），但由于这个错误而失败了。
有什么想法吗？ 
it("应该要求有效的电子邮件", () => {
spectator.component.email.setValue({ email: "invalidemail" });
expect(spectator.component.email).toEqual(false);
});
来自我的 .ts 文件：
get email(): AbstractControl | null {
return this.form.get("email");
}
以及我的错误：
我尝试过这个 spectator.component.email("invalidemail");
英文:
I'm writing a test (jtest) for an angular component, but is failing because of this error.
any idea?
it("should require valid email", () => {
spectator.component.email.setValue({ email: "invalidemail" });
expect(spectator.component.email).toEqual(false);
});
from my .ts file:
get email(): AbstractControl | null {
return this.form.get("email");
}
and my error:
I've tried this spectator.component.email("invalidemail");
答案1
得分: 0
错误告诉您 this.form 未定义。因此，您必须首先对其进行初始化：
it("应该要求有效的电子邮件", () => {
spectator.component.form = new FormGroup({ email: new FormControl() });
spectator.component.email.setValue({ email: "invalidemail" });
expect(spectator.component.email).toEqual(false);
});
英文:
The error tells you this.form is undefined. So you have to init it first:
it("should require valid email", () => {
spectator.component.form = new FormGroup({email: new FormControl()});
spectator.component.email.setValue({ email: "invalidemail" });
expect(spectator.component.email).toEqual(false);
});
答案2
得分: 0
解决了...
it("当模式无效时应为无效电子邮件", () => {
spectator.detectChanges();
spectator.component.form.get("email")?.setValue("invalidemail");
spectator.component.form.get("email")?.updateValueAndValidity();
expect(spectator.component.email?.invalid).toBeTruthy();
expect(spectator.component.email?.hasError("pattern")).toBeTruthy();
});
现在对我有效，无论如何谢谢
英文:
well it's resolved...
it("should be invalid email when invalid pattern", () => {
spectator.detectChanges();
spectator.component.form.get("email")?.setValue("invalidemail");
spectator.component.form.get("email")?.updateValueAndValidity();
expect(spectator.component.email?.invalid).toBeTruthy();
expect(spectator.component.email?.hasError("pattern")).toBeTruthy();
});
that is working for me now, thank you anyway
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