Graphql-flutter: multipart_upload_test fails

[Waitak]

Describe the bug
graphql/test/multipart_upload_test fails at line 161 because application/json is returned instead of multipart/form-data.

To Reproduce
Steps to reproduce the behavior:

1. cd graphql-flutter/packages/graphql
2. pub run test_coverage
3. Interrupt as soon as .test_coverage.dart is generated.
4. Run test manually using:
   dart --pause-isolates-on-exit \
   --enable_asserts \
   --enable-vm-service=8787 test/.test_coverage.dart

The relevant section of the test output is as follows:

00:01 +64 -1: upload upload success [E]
  Expected: 'multipart/form-data'
    Actual: 'application/json'
     Which: is different.
            Expected: multipart/ ...
              Actual: applicatio ...
                      ^
             Differ at offset 0

  package:test_api/src/frontend/expect.dart 153:30              fail
  package:test_api/src/frontend/expect.dart 147:3               _expect
  package:test_api/src/frontend/expect.dart 59:3                expect
  test/multipart_upload_test.dart 161:7                         main.<fn>.<fn>

Desktop (please complete the following information):

• OS: Ubuntu 18.04
• Version 2.1.1-beta.5

Additional context

• Test coverage full output

[knaeckeKami]

Likely related:
https://github.com/dart-lang/http/issues/351
Might be a bug in http 0.12.0+3 and fixed in 0.12.0+4?

Edit: can confirm, the test succeeds with http 0.12.0+4.

[mainawycliffe]

Amazing work @knaeckeKami.

[kulture-rob]

I had a feeling it had to do with the HTTP module, but their changelog just had documentation changes the past couple of releases. Thanks for finding that!!

[mainawycliffe]

This issue has been fixed by #530, should be released to beta over the next 24 hours.

[HofmannZ]

:tada: This issue has been resolved in version 3.0.0-beta.3 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket:

[HofmannZ]

:tada: This issue has been resolved in version 3.0.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: