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-rw-r--r--testing/web-platform/tests/FileAPI/support/Blob.js70
1 files changed, 70 insertions, 0 deletions
diff --git a/testing/web-platform/tests/FileAPI/support/Blob.js b/testing/web-platform/tests/FileAPI/support/Blob.js
new file mode 100644
index 0000000000..2c24974685
--- /dev/null
+++ b/testing/web-platform/tests/FileAPI/support/Blob.js
@@ -0,0 +1,70 @@
+'use strict'
+
+self.test_blob = (fn, expectations) => {
+ var expected = expectations.expected,
+ type = expectations.type,
+ desc = expectations.desc;
+
+ var t = async_test(desc);
+ t.step(function() {
+ var blob = fn();
+ assert_true(blob instanceof Blob);
+ assert_false(blob instanceof File);
+ assert_equals(blob.type, type);
+ assert_equals(blob.size, expected.length);
+
+ var fr = new FileReader();
+ fr.onload = t.step_func_done(function(event) {
+ assert_equals(this.result, expected);
+ }, fr);
+ fr.onerror = t.step_func(function(e) {
+ assert_unreached("got error event on FileReader");
+ });
+ fr.readAsText(blob, "UTF-8");
+ });
+}
+
+self.test_blob_binary = (fn, expectations) => {
+ var expected = expectations.expected,
+ type = expectations.type,
+ desc = expectations.desc;
+
+ var t = async_test(desc);
+ t.step(function() {
+ var blob = fn();
+ assert_true(blob instanceof Blob);
+ assert_false(blob instanceof File);
+ assert_equals(blob.type, type);
+ assert_equals(blob.size, expected.length);
+
+ var fr = new FileReader();
+ fr.onload = t.step_func_done(function(event) {
+ assert_true(this.result instanceof ArrayBuffer,
+ "Result should be an ArrayBuffer");
+ assert_array_equals(new Uint8Array(this.result), expected);
+ }, fr);
+ fr.onerror = t.step_func(function(e) {
+ assert_unreached("got error event on FileReader");
+ });
+ fr.readAsArrayBuffer(blob);
+ });
+}
+
+// Assert that two TypedArray objects have the same byte values
+self.assert_equals_typed_array = (array1, array2) => {
+ const [view1, view2] = [array1, array2].map((array) => {
+ assert_true(array.buffer instanceof ArrayBuffer,
+ 'Expect input ArrayBuffers to contain field `buffer`');
+ return new DataView(array.buffer, array.byteOffset, array.byteLength);
+ });
+
+ assert_equals(view1.byteLength, view2.byteLength,
+ 'Expect both arrays to be of the same byte length');
+
+ const byteLength = view1.byteLength;
+
+ for (let i = 0; i < byteLength; ++i) {
+ assert_equals(view1.getUint8(i), view2.getUint8(i),
+ `Expect byte at buffer position ${i} to be equal`);
+ }
+}