diff --git a/content-security-policy/securitypolicyviolation/constructor-required-fields.html b/content-security-policy/securitypolicyviolation/constructor-required-fields.html
index 1a090d8e2c46057..1f30e38b0c254d7 100644
--- a/content-security-policy/securitypolicyviolation/constructor-required-fields.html
+++ b/content-security-policy/securitypolicyviolation/constructor-required-fields.html
@@ -25,118 +25,111 @@
       }), undefined);
     }, "SecurityPolicyViolationEvent constructor works with an init dict");
 
-    // missing required members
+    // missing optional members
     test(function() {
-      assert_throws_js(TypeError,
-        function() { new SecurityPolicyViolationEvent("securitypolicyviolation", {
-          // documentURI: "http://example.com",
-          referrer: "http://example.com",
-          blockedURI: "http://example.com",
-          violatedDirective: "default-src",
-          effectiveDirective: "default-src",
-          originalPolicy: "default-src 'none'",
-          sourceFile: "example.js",
-          sample: "<script>alert('1');</scr" + "ipt>",
-          disposition: "enforce",
-          statusCode: 200,
-          lineNumber: 1,
-          columnNumber: 1,
-      })});
-    }, "SecurityPolicyViolationEvent constructor requires documentURI");
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+        // documentURI: "http://example.com",
+        referrer: "http://example.com",
+        blockedURI: "http://example.com",
+        violatedDirective: "default-src",
+        effectiveDirective: "default-src",
+        originalPolicy: "default-src 'none'",
+        sourceFile: "example.js",
+        sample: "<script>alert('1');</scr" + "ipt>",
+        disposition: "enforce",
+        statusCode: 200,
+        lineNumber: 1,
+        columnNumber: 1,
+      }).documentURI, "");
+    }, "SecurityPolicyViolationEvent constructor does not require documentURI");
 
     test(function() {
-      assert_throws_js(TypeError,
-        function() { new SecurityPolicyViolationEvent("securitypolicyviolation", {
-          documentURI: "http://example.com",
-          referrer: "http://example.com",
-          blockedURI: "http://example.com",
-          // violatedDirective: "default-src",
-          effectiveDirective: "default-src",
-          originalPolicy: "default-src 'none'",
-          sourceFile: "example.js",
-          sample: "<script>alert('1');</scr" + "ipt>",
-          disposition: "enforce",
-          statusCode: 200,
-          lineNumber: 1,
-          columnNumber: 1,
-      })});
-    }, "SecurityPolicyViolationEvent constructor requires violatedDirective");
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+        documentURI: "http://example.com",
+        referrer: "http://example.com",
+        blockedURI: "http://example.com",
+        // violatedDirective: "default-src",
+        effectiveDirective: "default-src",
+        originalPolicy: "default-src 'none'",
+        sourceFile: "example.js",
+        sample: "<script>alert('1');</scr" + "ipt>",
+        disposition: "enforce",
+        statusCode: 200,
+        lineNumber: 1,
+        columnNumber: 1,
+      }).violatedDirective, "");
+    }, "SecurityPolicyViolationEvent constructor does not require violatedDirective");
 
     test(function() {
-      assert_throws_js(TypeError,
-        function() { new SecurityPolicyViolationEvent("securitypolicyviolation", {
-          documentURI: "http://example.com",
-          referrer: "http://example.com",
-          blockedURI: "http://example.com",
-          violatedDirective: "default-src",
-          // effectiveDirective: "default-src",
-          originalPolicy: "default-src 'none'",
-          sourceFile: "example.js",
-          sample: "<script>alert('1');</scr" + "ipt>",
-          disposition: "enforce",
-          statusCode: 200,
-          lineNumber: 1,
-          columnNumber: 1,
-      })});
-    }, "SecurityPolicyViolationEvent constructor requires effectiveDirective");
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+        documentURI: "http://example.com",
+        referrer: "http://example.com",
+        blockedURI: "http://example.com",
+        violatedDirective: "default-src",
+        // effectiveDirective: "default-src",
+        originalPolicy: "default-src 'none'",
+        sourceFile: "example.js",
+        sample: "<script>alert('1');</scr" + "ipt>",
+        disposition: "enforce",
+        statusCode: 200,
+        lineNumber: 1,
+        columnNumber: 1,
+      }).effectiveDirective, "");
+    }, "SecurityPolicyViolationEvent constructor does not require effectiveDirective");
 
     test(function() {
-      assert_throws_js(TypeError,
-        function() { new SecurityPolicyViolationEvent("securitypolicyviolation", {
-          documentURI: "http://example.com",
-          referrer: "http://example.com",
-          blockedURI: "http://example.com",
-          violatedDirective: "default-src",
-          effectiveDirective: "default-src",
-          // originalPolicy: "default-src 'none'",
-          sourceFile: "example.js",
-          sample: "<script>alert('1');</scr" + "ipt>",
-          disposition: "enforce",
-          statusCode: 200,
-          lineNumber: 1,
-          columnNumber: 1,
-      })});
-    }, "SecurityPolicyViolationEvent constructor requires originalPolicy");
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+        documentURI: "http://example.com",
+        referrer: "http://example.com",
+        blockedURI: "http://example.com",
+        violatedDirective: "default-src",
+        effectiveDirective: "default-src",
+        // originalPolicy: "default-src 'none'",
+        sourceFile: "example.js",
+        sample: "<script>alert('1');</scr" + "ipt>",
+        disposition: "enforce",
+        statusCode: 200,
+        lineNumber: 1,
+        columnNumber: 1,
+      }).originalPolicy, "");
+    }, "SecurityPolicyViolationEvent constructor does not require originalPolicy");
 
     test(function() {
-      assert_throws_js(TypeError,
-        function() { new SecurityPolicyViolationEvent("securitypolicyviolation", {
-          documentURI: "http://example.com",
-          referrer: "http://example.com",
-          blockedURI: "http://example.com",
-          violatedDirective: "default-src",
-          effectiveDirective: "default-src",
-          originalPolicy: "default-src 'none'",
-          sourceFile: "example.js",
-          sample: "<script>alert('1');</scr" + "ipt>",
-          // disposition: "enforce",
-          statusCode: 200,
-          lineNumber: 1,
-          columnNumber: 1,
-      })});
-    }, "SecurityPolicyViolationEvent constructor requires disposition");
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+        documentURI: "http://example.com",
+        referrer: "http://example.com",
+        blockedURI: "http://example.com",
+        violatedDirective: "default-src",
+        effectiveDirective: "default-src",
+        originalPolicy: "default-src 'none'",
+        sourceFile: "example.js",
+        sample: "<script>alert('1');</scr" + "ipt>",
+        // disposition: "enforce",
+        statusCode: 200,
+        lineNumber: 1,
+        columnNumber: 1,
+      }).disposition, "enforce");
+    }, "SecurityPolicyViolationEvent constructor does not require disposition");
 
     test(function() {
-      assert_throws_js(TypeError,
-        function() { new SecurityPolicyViolationEvent("securitypolicyviolation", {
-          documentURI: "http://example.com",
-          referrer: "http://example.com",
-          blockedURI: "http://example.com",
-          violatedDirective: "default-src",
-          effectiveDirective: "default-src",
-          originalPolicy: "default-src 'none'",
-          sourceFile: "example.js",
-          sample: "<script>alert('1');</scr" + "ipt>",
-          disposition: "enforce",
-          // statusCode: 200,
-          lineNumber: 1,
-          columnNumber: 1,
-      })});
-    }, "SecurityPolicyViolationEvent constructor requires statusCode");
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+        documentURI: "http://example.com",
+        referrer: "http://example.com",
+        blockedURI: "http://example.com",
+        violatedDirective: "default-src",
+        effectiveDirective: "default-src",
+        originalPolicy: "default-src 'none'",
+        sourceFile: "example.js",
+        sample: "<script>alert('1');</scr" + "ipt>",
+        disposition: "enforce",
+        // statusCode: 200,
+        lineNumber: 1,
+        columnNumber: 1,
+      }).statusCode, 0);
+    }, "SecurityPolicyViolationEvent constructor does not require statusCode");
 
-    // missing optional members
     test(function() {
-      assert_not_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
         documentURI: "http://example.com",
         // referrer: "http://example.com",
         blockedURI: "http://example.com",
@@ -149,11 +142,11 @@
         statusCode: 200,
         lineNumber: 1,
         columnNumber: 1,
-      }), undefined);
+      }).referrer, "");
     }, "SecurityPolicyViolationEvent constructor does not require referrer");
 
     test(function() {
-      assert_not_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
         documentURI: "http://example.com",
         referrer: "http://example.com",
         // blockedURI: "http://example.com",
@@ -166,11 +159,11 @@
         statusCode: 200,
         lineNumber: 1,
         columnNumber: 1,
-      }), undefined);
+      }).blockedURI, "");
     }, "SecurityPolicyViolationEvent constructor does not require blockedURI");
 
     test(function() {
-      assert_not_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
         documentURI: "http://example.com",
         referrer: "http://example.com",
         blockedURI: "http://example.com",
@@ -183,11 +176,11 @@
         statusCode: 200,
         lineNumber: 1,
         columnNumber: 1,
-      }), undefined);
+      }).sourceFile, "");
     }, "SecurityPolicyViolationEvent constructor does not require sourceFile");
 
     test(function() {
-      assert_not_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
         documentURI: "http://example.com",
         referrer: "http://example.com",
         blockedURI: "http://example.com",
@@ -200,11 +193,11 @@
         statusCode: 200,
         lineNumber: 1,
         columnNumber: 1,
-      }), undefined);
+      }).sample, "");
     }, "SecurityPolicyViolationEvent constructor does not require sample");
 
     test(function() {
-      assert_not_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
         documentURI: "http://example.com",
         referrer: "http://example.com",
         blockedURI: "http://example.com",
@@ -217,11 +210,11 @@
         statusCode: 200,
         // lineNumber: 1,
         columnNumber: 1,
-      }), undefined);
+      }).lineNumber, 0);
     }, "SecurityPolicyViolationEvent constructor does not require lineNumber");
 
     test(function() {
-      assert_not_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
+      assert_equals(new SecurityPolicyViolationEvent("securitypolicyviolation", {
         documentURI: "http://example.com",
         referrer: "http://example.com",
         blockedURI: "http://example.com",
@@ -234,6 +227,6 @@
         statusCode: 200,
         lineNumber: 1,
         // columnNumber: 1,
-      }), undefined);
+      }).columnNumber, 0);
     }, "SecurityPolicyViolationEvent constructor does not require columnNumber");
 </script>