commit a07bb28ba27c4f3336c7d685f0016a75e985811d Author: David Fifield david@bamsoftware.com Date: Tue Mar 5 13:17:35 2019 -0700

Tests for grepHelperAddr. --- meek-client-torbrowser/protocol_test.go | 88 +++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+)

diff --git a/meek-client-torbrowser/protocol_test.go b/meek-client-torbrowser/protocol_test.go new file mode 100644 index 0000000..e127c4f --- /dev/null +++ b/meek-client-torbrowser/protocol_test.go @@ -0,0 +1,88 @@ +package main + +import ( + "bytes" + "errors" + "io" + "testing" + "time" +) + +const timeout = 50 * time.Millisecond +var errTimedout = errors.New("timed out") + +type infiniteReader struct{} + +func (r *infiniteReader) Read(p []byte) (int, error) { + for i := range p { + p[i] = '\n' + } + return len(p), nil +} + +func grepHelperAddrTimeout(r io.Reader) (string, error) { + type result struct { + s string + err error + } + ch := make(chan result) + go func() { + s, err := grepHelperAddr(r) + ch <- result { + s: s, + err: err, + } + }() + + select { + case result := <-ch: + return result.s, result.err + case <-time.After(timeout): + return "", errTimedout + } +} + +func TestGrepHelperAddr(t *testing.T) { + const expectedAddr = "127.0.0.1:1000" + + // bad tests + for _, test := range []string{ + "", + "xmeek-http-helper: listen " + expectedAddr + "\n", + "meek-http-helper: listen 127.0.0.1:\n", + "meek-http-helper: listen " + expectedAddr + " \n", + "meek-http-helper: listen " + expectedAddr + "abc\n", + } { + b := bytes.NewBufferString(test) + s, err := grepHelperAddrTimeout(b) + if err != io.EOF { + t.Errorf("%q → (%q, %v), should have been %v", test, s, err, io.EOF) + } + // test again with an endless reader + b = bytes.NewBufferString(test) + s, err = grepHelperAddrTimeout(io.MultiReader(b, &infiniteReader{})) + if err != errTimedout { + t.Errorf("%q → (%q, %v), should have been %v", test, s, err, errTimedout) + } + } + + // good tests + for _, test := range []string{ + "meek-http-helper: listen " + expectedAddr, + "meek-http-helper: listen " + expectedAddr+ "\njunk", + "junk\nmeek-http-helper: listen " + expectedAddr + "\njunk", + "meek-http-helper: listen " + expectedAddr + "\nmeek-http-helper: listen 1.2.3.4:9999\n", + } { + b := bytes.NewBufferString(test) + s, err := grepHelperAddrTimeout(b) + if err != nil || s != expectedAddr { + t.Errorf("%q → (%q, %v), should have been %q", test, s, err, expectedAddr) + } + // test again with an endless reader + b = bytes.NewBufferString(test) + s, err = grepHelperAddrTimeout(io.MultiReader(b, &infiniteReader{})) + if err != nil || s != expectedAddr { + t.Errorf("%q → (%q, %v), should have been %q", test, s, err, expectedAddr) + } + } +}