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Log when an enhanced navigation fails #62598

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Merged
merged 2 commits into from
Jul 9, 2025
Merged

Log when an enhanced navigation fails #62598

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f40458c
Added warning when enhanced navigation falls back to full page reload…
dariatiurina Jul 8, 2025
dd58e2b
tests fix
dariatiurina Jul 9, 2025
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1 change: 1 addition & 0 deletions src/Components/Web.JS/src/Services/NavigationEnhancement.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -455,6 +455,7 @@ function enhancedNavigationIsEnabledForForm(form: HTMLFormElement): boolean {
function retryEnhancedNavAsFullPageLoad(internalDestinationHref: string) {
// The ? trick here is the same workaround as described in #10839, and without it, the user
// would not be able to use the back button afterwards.
console.warn(`Enhanced navigation failed for destination ${internalDestinationHref}. Falling back to full page load.`);
history.replaceState(null, '', internalDestinationHref + '?');
location.replace(internalDestinationHref);
}
9 changes: 9 additions & 0 deletions src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTest.cs
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Expand Up @@ -73,6 +73,10 @@ public void CanNavigateToNonHtmlResponse()
Navigate($"{ServerPathBase}/nav");
Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Non-HTML page")).Click();
Browser.Equal("Hello, this is plain text", () => Browser.Exists(By.TagName("html")).Text);

//Check if the fall back because of the non-html response sends a warning
var logs = Browser.GetBrowserLogs(LogLevel.Warning);
Assert.Contains(logs, log => log.Message.Contains("Enhanced navigation failed for destination") && log.Message.Contains("Falling back to full page load.") && !log.Message.Contains("Error"));
}

[Fact]
Expand Down Expand Up @@ -465,6 +469,11 @@ public void EnhancedNavNotUsedForNonBlazorDestinations()
Browser.Exists(By.TagName("nav")).FindElement(By.LinkText("Non-Blazor HTML page")).Click();
Browser.Equal("This is a non-Blazor endpoint", () => Browser.Exists(By.TagName("h1")).Text);
Assert.Equal("undefined", Browser.ExecuteJavaScript<string>("return typeof Blazor")); // Blazor JS is NOT loaded

//Check if the fall back because of the non-blazor endpoint navigation sends a warning
var logs = Browser.GetBrowserLogs(LogLevel.Warning);
Assert.Contains(logs, log => log.Message.Contains("Enhanced navigation failed for destination") && log.Message.Contains("Falling back to full page load.") && !log.Message.Contains("Error"));

}

[Theory]
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