使用"hasBackground"进行浓缩咖啡测试 [英] Espresso test with “hasBackground”

问题描述

如何用布局背景的颜色进行浓咖啡测试?当前使用 hasBackground():

How can I make a espresso test with the color of the layout background? Currently use hasBackground():

onView(withId(R.id.backgroundColor)).check(matches(hasBackground(Color.parseColor("#FF55ff77"))));

但是会发生错误:

android.support.test.espresso.base.DefaultFailureHandler $ AssertionFailedWithCauseError:'具有可绘制ID为-11141257的背景'与所选视图不匹配.

android.support.test.espresso.base.DefaultFailureHandler$AssertionFailedWithCauseError: 'has background with drawable ID: -11141257' doesn't match the selected view.

预期:具有可绘制ID:-11141257的背景

Expected: has background with drawable ID: -11141257

Got:"LinearLayout {id = 2130968576，res-name = backgroundColor，可见性= VISIBLE，宽度= 996，高度= 1088，has-focus = false，has-focusable = false，has-window-focus = true， is-clickable = false，is-enabled = true，is-focused = false，is-focusable = false，is-layout-requested = false，is-selected = false，layout-params = android.widget.LinearLayout $ LayoutParams @ e55f6e7，tag = null，root-is-layout-requested = false，has-input-connection = false，x = 42.0，y = 601.0，child-count = 2}"

Got: "LinearLayout{id=2130968576, res-name=backgroundColor, visibility=VISIBLE, width=996, height=1088, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@e55f6e7, tag=null, root-is-layout-requested=false, has-input-connection=false, x=42.0, y=601.0, child-count=2}"

我该如何比较?

推荐答案

我正在借助

您可以为匹配器提供类似的内容:

And you can provide your matcher with something like:

public class CustomTestMatchers {

    public static Matcher<View> withBackgroundColour(@ColorRes int expectedColor) {
        return new BackgroundColourMatcher(expectedColor);
    }
}

最后在您的测试中:

onView(withId(R.id.my_view)).check(matches(withBackgroundColour(R.color.color_to_check)))

您可以轻松地修改BackgroundColourMatcher类，使其直接使用颜色而不是资源.

You can easily modify the BackgroundColourMatcher class to make it use directly a colour and not a resource.

希望有帮助！

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