GlanceNodeAssertion

Kotlin |Java

class GlanceNodeAssertion<R : Any?, T : GlanceNode<R>>

Represents a Glance node from the tree that can be asserted on.

An instance of GlanceNodeAssertion can be obtained from onNode and equivalent methods on a GlanceNodeAssertionsProvider

Summary

Public functions
`GlanceNodeAssertion<R, T>`	`assert(matcher: GlanceNodeMatcher<R>, messagePrefixOnError: (() -> String)?)` Asserts that the provided `matcher` is satisfied for this node.
`GlanceNodeAssertion<R, T>`	`assertDoesNotExist()` Asserts that no matching node was found.
`GlanceNodeAssertion<R, T>`	`assertExists()` Asserts that the node was found.
`GlanceNodeAssertionCollection<R, T>`	`onChildren()` Returns `GlanceNodeAssertionCollection` that allows performing assertions on the children of the node selected by this `GlanceNodeAssertion`.

fun assert(
    matcher: GlanceNodeMatcher<R>,
    messagePrefixOnError: (() -> String)? = null
): GlanceNodeAssertion<R, T>

Asserts that the provided matcher is satisfied for this node.

This function also can be used to create convenience "assert{somethingConcrete}" methods as extension functions on the GlanceNodeAssertion.

Parameters
`matcher: GlanceNodeMatcher<R>`	Matcher to verify.
`messagePrefixOnError: (() -> String)? = null`	Prefix to be put in front of an error that gets thrown in case this assert fails. This can be helpful in situations where this assert fails as part of a bigger operation that used this assert as a precondition check.

Throws
`kotlin.AssertionError`	if the matcher does not match or the node can no longer be found.

fun assertDoesNotExist(): GlanceNodeAssertion<R, T>

Asserts that no matching node was found.

Throws
`kotlin.AssertionError`	if the assert fails.

fun assertExists(): GlanceNodeAssertion<R, T>

Asserts that the node was found.

Throws
`kotlin.AssertionError`	if the assert fails.

fun onChildren(): GlanceNodeAssertionCollection<R, T>

Returns GlanceNodeAssertionCollection that allows performing assertions on the children of the node selected by this GlanceNodeAssertion.