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//! Page assertions for testing page state.
use std::time::Duration;
use viewpoint_core::Page;
use crate::error::AssertionError;
/// Default timeout for assertions.
const DEFAULT_TIMEOUT: Duration = Duration::from_secs(5);
/// Assertions for pages.
pub struct PageAssertions<'a> {
page: &'a Page,
timeout: Duration,
is_negated: bool,
}
impl<'a> PageAssertions<'a> {
/// Create a new `PageAssertions` for the given page.
pub fn new(page: &'a Page) -> Self {
Self {
page,
timeout: DEFAULT_TIMEOUT,
is_negated: false,
}
}
/// Set the timeout for this assertion.
#[must_use]
pub fn timeout(mut self, timeout: Duration) -> Self {
self.timeout = timeout;
self
}
/// Negate the assertion.
///
/// This is an alias for the `not` method to avoid conflict with `std::ops::Not`.
#[must_use]
pub fn negated(mut self) -> Self {
self.is_negated = !self.is_negated;
self
}
/// Negate the assertion.
///
/// Note: This method name shadows the `Not` trait's method. Use `negated()` if
/// you need to avoid this conflict.
#[must_use]
#[allow(clippy::should_implement_trait)]
pub fn not(self) -> Self {
self.negated()
}
/// Assert that the page has the specified URL.
///
/// # Errors
///
/// Returns an error if the assertion fails or the URL cannot be retrieved.
pub async fn to_have_url(&self, expected: &str) -> Result<(), AssertionError> {
let start = std::time::Instant::now();
loop {
let url =
self.page.url().await.map_err(|e| {
AssertionError::new("Failed to get URL", expected, e.to_string())
})?;
let matches = url == expected;
let expected_match = !self.is_negated;
if matches == expected_match {
return Ok(());
}
if start.elapsed() >= self.timeout {
return Err(AssertionError::new(
if self.is_negated {
"Page should not have URL"
} else {
"Page should have URL"
},
if self.is_negated {
format!("not \"{expected}\"")
} else {
expected.to_string()
},
url,
));
}
tokio::time::sleep(Duration::from_millis(100)).await;
}
}
/// Assert that the page URL contains the specified substring.
///
/// # Errors
///
/// Returns an error if the assertion fails or the URL cannot be retrieved.
pub async fn to_have_url_containing(&self, expected: &str) -> Result<(), AssertionError> {
let start = std::time::Instant::now();
loop {
let url =
self.page.url().await.map_err(|e| {
AssertionError::new("Failed to get URL", expected, e.to_string())
})?;
let contains = url.contains(expected);
let expected_match = !self.is_negated;
if contains == expected_match {
return Ok(());
}
if start.elapsed() >= self.timeout {
return Err(AssertionError::new(
if self.is_negated {
"Page URL should not contain"
} else {
"Page URL should contain"
},
if self.is_negated {
format!("not containing \"{expected}\"")
} else {
format!("containing \"{expected}\"")
},
url,
));
}
tokio::time::sleep(Duration::from_millis(100)).await;
}
}
/// Assert that the page has the specified title.
///
/// # Errors
///
/// Returns an error if the assertion fails or the title cannot be retrieved.
pub async fn to_have_title(&self, expected: &str) -> Result<(), AssertionError> {
let start = std::time::Instant::now();
loop {
let title =
self.page.title().await.map_err(|e| {
AssertionError::new("Failed to get title", expected, e.to_string())
})?;
let matches = title == expected;
let expected_match = !self.is_negated;
if matches == expected_match {
return Ok(());
}
if start.elapsed() >= self.timeout {
return Err(AssertionError::new(
if self.is_negated {
"Page should not have title"
} else {
"Page should have title"
},
if self.is_negated {
format!("not \"{expected}\"")
} else {
expected.to_string()
},
title,
));
}
tokio::time::sleep(Duration::from_millis(100)).await;
}
}
/// Assert that the page title contains the specified substring.
///
/// # Errors
///
/// Returns an error if the assertion fails or the title cannot be retrieved.
pub async fn to_have_title_containing(&self, expected: &str) -> Result<(), AssertionError> {
let start = std::time::Instant::now();
loop {
let title =
self.page.title().await.map_err(|e| {
AssertionError::new("Failed to get title", expected, e.to_string())
})?;
let contains = title.contains(expected);
let expected_match = !self.is_negated;
if contains == expected_match {
return Ok(());
}
if start.elapsed() >= self.timeout {
return Err(AssertionError::new(
if self.is_negated {
"Page title should not contain"
} else {
"Page title should contain"
},
if self.is_negated {
format!("not containing \"{expected}\"")
} else {
format!("containing \"{expected}\"")
},
title,
));
}
tokio::time::sleep(Duration::from_millis(100)).await;
}
}
}