var cover2 struct {
	mode        string
	tearDown    func(coverprofile string, gocoverdir string) (string, error)
	snapshotcov func() float64
}

// registerCover2 is invoked during "go test -cover" runs.
// It is used to record a 'tear down' function
// (to be called when the test is complete) and the coverage mode.

	}
}

func TestCoverOnPackageWithNoTestFiles(t *testing.T) {
	testenv.MustHaveGoRun(t)

	// For packages with no test files, the new "go test -cover"
	// strategy is to run cmd/cover on the package in a special
	// "EmitMetaFile" mode. When running in this mode, cmd/cover walks
	// the package doing instrumentation, but when finished, instead of
	// writing out instrumented source files, it directly emits a

        def slower = checkBaselineVersion({ it.fasterThan(current) }, { it.getSpeedStatsAgainst(displayName, current) })
//        def larger = checkBaselineVersion({ it.usesLessMemoryThan(current) }, { it.getMemoryStatsAgainst(displayName, current) })
//        if (slower && larger) {
//            throw new AssertionError("$slower\n$larger")
//        }
        if (slower) {
            throw new AssertionError(slower)

  }

  /**
   * Similar to load64, but allows offset + 8 > input.length, padding the result with zeroes. This
   * has to explicitly reverse the order of the bytes as it packs them into the result which makes
   * it slower than the native version.
   *
   * @param input the input bytes
   * @param offset the offset into the array at which to start reading
   * @param length the number of bytes from the input to read

        result.assertCurrentVersionHasNotRegressed()

        then:
        AssertionError e = thrown()
        e.message.startsWith("Speed ${result.displayName}: we're slower than 1.0 with 99% confidence.")
        e.message.contains('Difference: 11 ms slower (11 ms), 11.00%')
        !e.message.contains('1.3')
    }

    def "can lookup the results for a baseline version"() {
        expect:

			}
			coverFile = strings.TrimSuffix(coverFile, ".go") + ".cover.go"
			if cfg.Experiment.CoverageRedesign {
				infiles = append(infiles, sourceFile)
				outfiles = append(outfiles, coverFile)
			} else {
				cover := p.Internal.CoverVars[key]
				if cover == nil {
					continue // Not covering this file.
				}
				if err := b.cover(a, coverFile, sourceFile, cover.Var); err != nil {
					return err
				}
			}

    }

    @Override
    public byte[] read() throws IOException {
      Closer closer = Closer.create();
      try {
        FileInputStream in = closer.register(openStream());
        return ByteStreams.toByteArray(in, in.getChannel().size());
      } catch (Throwable e) {
        throw closer.rethrow(e);
      } finally {
        closer.close();
      }
    }

    @Override
    public String toString() {

	w.hasWritten = true
	return w.Writer.Write(p)
}

// Close closes the WriteOnCloser. It behaves like io.Closer.
func (w *WriteOnCloser) Close() error {
	if !w.hasWritten {
		_, err := w.Write(nil)
		if err != nil {
			return err
		}
	}
	if closer, ok := w.Writer.(io.Closer); ok {
		return closer.Close()
	}
	return nil
}

// HasWritten returns true if at least one write operation was performed.

 *
 * <pre>{@code
 * FluentFuture<UserName> userName =
 *     ClosingFuture.submit(
 *             closer -> closer.eventuallyClose(database.newTransaction(), closingExecutor),
 *             executor)
 *         .transformAsync((closer, transaction) -> transaction.queryClosingFuture("..."), executor)
 *         .transform((closer, result) -> result.get("userName"), directExecutor())

[short] skip
[compiler:gccgo] skip # gccgo has no cover tool
[!GOEXPERIMENT:coverageredesign] skip

go test -short -cover -covermode=atomic -coverpkg=coverdep/p1 coverdep

# In addition to the above, test to make sure there is no funny
# business if we try "go test -cover" in atomic mode targeting
# sync/atomic itself (see #57445). Just a short test run is needed
# since we're mainly interested in making sure the test builds and can