[Solved] Given this test snippet, what will button.nativeElement.textContent output?const fixture = TestBed.createComponent(MyComponent); fixture.detectChanges(); const button = fixture.debugElement.query(By.... | Angular

Angular - Testing

Given this test snippet, what will button.nativeElement.textContent output?

const fixture = TestBed.createComponent(MyComponent);
fixture.detectChanges();
const button = fixture.debugElement.query(By.css('button'));

Assuming the button's text in template is Click me.

A"Click me"

B"click me"

Cundefined

DAn empty string

Step-by-Step Solution

Solution:

Step 1: Understand fixture and detectChanges()
Calling detectChanges() renders the template, so button text is updated.
Step 2: Accessing nativeElement.textContent
Querying the button returns DebugElement; nativeElement.textContent returns the button's text exactly as in template.
Final Answer:
"Click me" -> Option A
Quick Check:
Button textContent after detectChanges() = "Click me" [OK]

Quick Trick: detectChanges() updates template text content correctly [OK]

Common Mistakes:

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Given this test snippet, what will button.nativeElement.textContent output?