<!DOCTYPE html> <body> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <img id="int_dpr" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=4.0"> <img id="fractional_dpr" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=2.5"> <img id="smaller_than_one" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=0.5"> <img id="srcset" srcset="resources/square.png 4x"> <img id="invalid" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=xx"> <img id="invalid_negative" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=-2"> <img id="invalid_zero" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=0"> <img id="header_and_srcset_invalid" srcset="resources/dpr.py?name=square.png&mimeType=image/png&dpr=xx 4x"> <img id="header_and_srcset_valid" srcset="resources/dpr.py?name=square.png&mimeType=image/png&dpr=4.0 2x"> <img id="explicit_width" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=4.0" width="100" height="100"> <img id="double_dpr" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=4.0&double=4.0"> <img id="double_dpr_different_values" src="resources/dpr.py?name=square.png&mimeType=image/png&dpr=4.0&double=2.5"> <script> let run_test = () => { test(() => { assert_equals(document.getElementById("int_dpr").naturalWidth, 25, "Integer Content-DPR header value") assert_equals(document.getElementById("fractional_dpr").naturalWidth, 40, "Fractional Content-DPR header value") assert_equals(document.getElementById("smaller_than_one").naturalWidth, 200, "Smaller than one Content-DPR header value") assert_equals(document.getElementById("srcset").naturalWidth, 25, "srcset") assert_equals(document.getElementById("invalid").naturalWidth, 100, "Invalid Content-DPR header value") assert_equals(document.getElementById("invalid_negative").naturalWidth, 100, "Negative Content-DPR header value") assert_equals(document.getElementById("invalid_zero").naturalWidth, 100, "Zero Content-DPR header value") assert_equals(document.getElementById("header_and_srcset_invalid").naturalWidth, 25, "Invalid Content-DPR header value with valid srcset") assert_equals(document.getElementById("header_and_srcset_valid").naturalWidth, 25, "Value Content-DPR header value and srcset") assert_equals(document.getElementById("explicit_width").naturalWidth, 25, "Explicit width attribute") assert_equals(document.getElementById("double_dpr").naturalWidth, 25, "Double Content-DPR header") assert_equals(document.getElementById("double_dpr_different_values").naturalWidth, 40, "Double Content-DPR header different values") }, "Test the image dimensions of different DPR sizes"); } window.addEventListener("load", run_test); </script> </body> </html>