Make cmd/podman/shared.GenerateCommand tests Linux-only

They rely on existence of /proc/self/exe .

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/cmd/podman/shared/funcs_linux_test.go b/cmd/podman/shared/funcs_linux_test.go
new file mode 100644
index 000000000..88571153f
--- /dev/null
+++ b/cmd/podman/shared/funcs_linux_test.go
@@ -0,0 +1,119 @@
+package shared
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGenerateCommand(t *testing.T) {
+	inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo \"hello world\""
+	correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo hello world"
+	newCommand, err := GenerateCommand(inputCommand, "foo", "bar", "")
+	assert.Nil(t, err)
+	assert.Equal(t, "hello world", newCommand[11])
+	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
+}
+
+func TestGenerateCommandCheckSubstitution(t *testing.T) {
+	type subsTest struct {
+		input      string
+		expected   string
+		shouldFail bool
+	}
+
+	absTmpFile, err := ioutil.TempFile("", "podmanRunlabelTestAbsolutePath")
+	assert.Nil(t, err, "error creating tempfile")
+	defer os.Remove(absTmpFile.Name())
+
+	relTmpFile, err := ioutil.TempFile("./", "podmanRunlabelTestRelativePath")
+	assert.Nil(t, err, "error creating tempfile")
+	defer os.Remove(relTmpFile.Name())
+	relTmpCmd, err := filepath.Abs(relTmpFile.Name())
+	assert.Nil(t, err, "error getting absolute path for relative tmpfile")
+
+	// this has a (low) potential of race conditions but no other way
+	removedTmpFile, err := ioutil.TempFile("", "podmanRunlabelTestRemove")
+	assert.Nil(t, err, "error creating tempfile")
+	os.Remove(removedTmpFile.Name())
+
+	absTmpCmd := fmt.Sprintf("%s --flag1 --flag2 --args=foo", absTmpFile.Name())
+	tests := []subsTest{
+		{
+			input:      "docker run -it alpine:latest",
+			expected:   "/proc/self/exe run -it alpine:latest",
+			shouldFail: false,
+		},
+		{
+			input:      "podman run -it alpine:latest",
+			expected:   "/proc/self/exe run -it alpine:latest",
+			shouldFail: false,
+		},
+		{
+			input:      absTmpCmd,
+			expected:   absTmpCmd,
+			shouldFail: false,
+		},
+		{
+			input:      "./" + relTmpFile.Name(),
+			expected:   relTmpCmd,
+			shouldFail: false,
+		},
+		{
+			input:      "ls -la",
+			expected:   "ls -la",
+			shouldFail: false,
+		},
+		{
+			input:      removedTmpFile.Name(),
+			expected:   "",
+			shouldFail: true,
+		},
+	}
+
+	for _, test := range tests {
+		newCommand, err := GenerateCommand(test.input, "foo", "bar", "")
+		if test.shouldFail {
+			assert.NotNil(t, err)
+		} else {
+			assert.Nil(t, err)
+		}
+		assert.Equal(t, test.expected, strings.Join(newCommand, " "))
+	}
+}
+
+func TestGenerateCommandPath(t *testing.T) {
+	inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
+	correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
+	newCommand, _ := GenerateCommand(inputCommand, "foo", "bar", "")
+	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
+}
+
+func TestGenerateCommandNoSetName(t *testing.T) {
+	inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
+	correctCommand := "/proc/self/exe run -it --name foo -e NAME=foo -e IMAGE=foo foo echo install"
+	newCommand, err := GenerateCommand(inputCommand, "foo", "", "")
+	assert.Nil(t, err)
+	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
+}
+
+func TestGenerateCommandNoName(t *testing.T) {
+	inputCommand := "docker run -it -e IMAGE=IMAGE IMAGE echo install"
+	correctCommand := "/proc/self/exe run -it -e IMAGE=foo foo echo install"
+	newCommand, err := GenerateCommand(inputCommand, "foo", "", "")
+	assert.Nil(t, err)
+	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
+}
+
+func TestGenerateCommandAlreadyPodman(t *testing.T) {
+	inputCommand := "podman run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
+	correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
+	newCommand, err := GenerateCommand(inputCommand, "foo", "bar", "")
+	assert.Nil(t, err)
+	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
+}