Import latest WritableStream tests from upstream

third_party/WebKit/LayoutTests/http/tests/streams/writable-streams/bad-strategies.js

Index: third_party/WebKit/LayoutTests/http/tests/streams/writable-streams/bad-strategies.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/streams/writable-streams/bad-strategies.js b/third_party/WebKit/LayoutTests/http/tests/streams/writable-streams/bad-strategies.js
new file mode 100644
index 0000000000000000000000000000000000000000..eb14cf22e12bf0d69a9e2ae7189137e4d50be3d1
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/streams/writable-streams/bad-strategies.js
@@ -0,0 +1,93 @@
+'use strict';
+
+if (self.importScripts) {
+  self.importScripts('/resources/testharness.js');
+}
+
+const error1 = new Error('a unique string');
+error1.name = 'error1';
+
+test(() => {
+  assert_throws(error1, () => {
+    new WritableStream({}, {
+      get size() {
+        throw error1;
+      },
+      highWaterMark: 5
+    });
+  }, 'construction should re-throw the error');
+}, 'Writable stream: throwing strategy.size getter');
+
+test(() => {
+  assert_throws(new TypeError(), () => {
+    new WritableStream({}, { size: 'a string' });
+  });
+}, 'reject any non-function value for strategy.size');
+
+test(() => {
+  assert_throws(error1, () => {
+    new WritableStream({}, {
+      size() {
+        return 1;
+      },
+      get highWaterMark() {
+        throw error1;
+      }
+    });
+  }, 'construction should re-throw the error');
+}, 'Writable stream: throwing strategy.highWaterMark getter');
+
+test(() => {
+
+  for (const highWaterMark of [-1, -Infinity, NaN, 'foo', {}]) {
+    assert_throws(new RangeError(), () => {
+      new WritableStream({}, {
+        size() {
+          return 1;
+        },
+        highWaterMark
+      });
+    }, `construction should throw a RangeError for ${highWaterMark}`);
+  }
+}, 'Writable stream: invalid strategy.highWaterMark');
+
+promise_test(t => {
+  const ws = new WritableStream({}, {
+    size() {
+      throw error1;
+    },
+    highWaterMark: 5
+  });
+
+  const writer = ws.getWriter();
+
+  const p1 = promise_rejects(t, error1, writer.write('a'), 'write should reject with the thrown error');
+
+  const p2 = promise_rejects(t, error1, writer.closed, 'closed should reject with the thrown error');
+
+  return Promise.all([p1, p2]);
+}, 'Writable stream: throwing strategy.size method');
+
+promise_test(() => {
+  const sizes = [NaN, -Infinity, Infinity, -1];
+  return Promise.all(sizes.map(size => {
+    const ws = new WritableStream({}, {
+      size() {
+        return size;
+      },
+      highWaterMark: 5
+    });
+
+    const writer = ws.getWriter();
+
+    return writer.write('a').then(() => assert_unreached('write must reject'), writeE => {
+      assert_equals(writeE.name, 'RangeError', `write must reject with a RangeError for ${size}`);
+
+      return writer.closed.then(() => assert_unreached('write must reject'), closedE => {
+        assert_equals(closedE, writeE, `closed should reject with the same error as write`);
+      });
+    });
+  }));
+}, 'Writable stream: invalid strategy.size return value');
+
+done();