Simplify Docker test infrastructure.

This change adds a layer of abstraction around the internal Docker APIs,
and eliminates all direct dependencies on Dockerfiles in the infrastructure.

A subsequent change will automated the generation of local images (with
efficient caching). Note that this change drops the use of bazel container
rules, as that experiment does not seem to be viable.

PiperOrigin-RevId: 308095430

1 files changed, 49 insertions, 0 deletions

diff --git a/test/runtimes/proctor/python.go b/test/runtimes/proctor/python.go
new file mode 100644
index 000000000..b9e0fbe6f
--- /dev/null
+++ b/test/runtimes/proctor/python.go
@@ -0,0 +1,49 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+// pythonRunner implements TestRunner for Python.
+type pythonRunner struct{}
+
+var _ TestRunner = pythonRunner{}
+
+// ListTests implements TestRunner.ListTests.
+func (pythonRunner) ListTests() ([]string, error) {
+	args := []string{"-m", "test", "--list-tests"}
+	cmd := exec.Command("./python", args...)
+	cmd.Stderr = os.Stderr
+	out, err := cmd.Output()
+	if err != nil {
+		return nil, fmt.Errorf("failed to list: %v", err)
+	}
+	var toolSlice []string
+	for _, test := range strings.Split(string(out), "\n") {
+		toolSlice = append(toolSlice, test)
+	}
+	return toolSlice, nil
+}
+
+// TestCmd implements TestRunner.TestCmd.
+func (pythonRunner) TestCmd(test string) *exec.Cmd {
+	args := []string{"-m", "test", test}
+	return exec.Command("./python", args...)
+}