Struct diagnostics_assertions::TreeAssertion

pub struct TreeAssertion<K = String> { /* private fields */ }

Struct for matching against a Data tree (DiagnosticsHierarchy).

Implementations

impl<K> TreeAssertion<K>

where K: AsRef<str>,

pub fn new(name: &str, exact_match: bool) -> Self

Create a new TreeAssertion. The |name| argument is the expected name of the tree to be compared against. Set |exact_match| to true to specify that all properties and children of the tree should be checked. To perform partial matching of the tree, set it to false.

pub fn add_property_assertion( &mut self, key: &str, assertion: Box<dyn PropertyAssertion<K>> )

Adds a property assertion to this tree assertion.

pub fn add_child_assertion(&mut self, assertion: TreeAssertion<K>)

Adds a tree assertion as a child of this tree assertion.

pub fn run(&self, actual: &DiagnosticsHierarchy<K>) -> Result<(), Error>

Check whether |actual| tree satisfies criteria defined by TreeAssertion. Return Ok if assertion passes and Error if assertion fails.