105 lines
2.4 KiB
Go
105 lines
2.4 KiB
Go
package docker
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import (
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"io/ioutil"
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"testing"
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)
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// mkTestContext generates a build context from the contents of the provided dockerfile.
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// This context is suitable for use as an argument to BuildFile.Build()
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func mkTestContext(dockerfile string, files [][2]string, t *testing.T) Archive {
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context, err := mkBuildContext(dockerfile, files)
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if err != nil {
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t.Fatal(err)
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}
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return context
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}
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// A testContextTemplate describes a build context and how to test it
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type testContextTemplate struct {
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// Contents of the Dockerfile
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dockerfile string
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// Additional files in the context, eg [][2]string{"./passwd", "gordon"}
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files [][2]string
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// Test commands to run in the resulting image
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tests []testCommand
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}
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// A testCommand describes a command to run in a container, and the exact output required to pass the test
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type testCommand struct {
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// The command to run, eg. []string{"echo", "hello", "world"}
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cmd []string
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// The exact output expected, eg. "hello world\n"
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output string
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}
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// A table of all the contexts to build and test.
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// A new docker runtime will be created and torn down for each context.
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var testContexts []testContextTemplate = []testContextTemplate{
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{
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`
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# VERSION 0.1
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# DOCKER-VERSION 0.2
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from docker-ut
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run sh -c 'echo root:testpass > /tmp/passwd'
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run mkdir -p /var/run/sshd
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`,
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nil,
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[]testCommand{
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{[]string{"cat", "/tmp/passwd"}, "root:testpass\n"},
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{[]string{"ls", "-d", "/var/run/sshd"}, "/var/run/sshd\n"},
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},
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},
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{
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`
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from docker-ut
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add foo /usr/lib/bla/bar`,
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[][2]string{{"foo", "hello world!"}},
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[]testCommand{
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{[]string{"cat", "/usr/lib/bla/bar"}, "hello world!"},
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},
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},
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}
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func TestBuild(t *testing.T) {
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for _, ctx := range testContexts {
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runtime, err := newTestRuntime()
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if err != nil {
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t.Fatal(err)
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}
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defer nuke(runtime)
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srv := &Server{runtime: runtime}
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buildfile := NewBuildFile(srv, ioutil.Discard)
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imgID, err := buildfile.Build(mkTestContext(ctx.dockerfile, ctx.files, t))
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if err != nil {
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t.Fatal(err)
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}
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builder := NewBuilder(runtime)
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for _, testCmd := range ctx.tests {
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container, err := builder.Create(
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&Config{
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Image: imgID,
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Cmd: testCmd.cmd,
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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defer runtime.Destroy(container)
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output, err := container.Output()
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if err != nil {
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t.Fatal(err)
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}
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if string(output) != testCmd.output {
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t.Fatalf("Unexpected output. Read '%s', expected '%s'", output, testCmd.output)
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}
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}
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}
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}
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