CONSOLE MESSAGE: line 18: The page at https://127.0.0.1:8443/security/mixedContent/resources/frame-with-insecure-image-redirects-to-basic-auth-secure-image.html?allowCrossOriginSubresourcesToAskForCredentials=1 was allowed to display insecure content from http://127.0.0.1:8080/resources/redirect.php?url=https://localhost:8443/security/mixedContent/resources/subresource/protected-image.php.

http://127.0.0.1:8080/resources/redirect.php?url=https://localhost:8443/security/mixedContent/resources/subresource/protected-image.php - didReceiveAuthenticationChallenge - Responding with testUser:testPassword
This test opens a new window to a secure page that loads an insecure image that redirects to a secure image guarded by basic authentication. The image should load.

PASS did load image.