[#246] Kanto CM CLI creates containers out of non json files

containerm/cli/cli_command_ctrs_create.go

@@ -17,6 +17,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"strings"
 	"time"
 
 	"github.com/eclipse-kanto/container-management/containerm/containers/types"
@@ -114,6 +115,10 @@ func (cc *createCmd) containerFromFile() (*types.Container, error) {
 	if err != nil {
 		return nil, err
 	}
+	if !strings.HasSuffix(strings.ToLower(cc.config.containerFile), ".json") {
+		fileName := cc.config.containerFile
+		return nil, log.NewError(fmt.Sprintf("the file %s is not a json file", fileName))
+	}
 	byteValue, err := os.ReadFile(cc.config.containerFile)
 	if err != nil {
 		return nil, err

containerm/cli/cli_command_ctrs_create_test.go

@@ -484,7 +484,7 @@ func (createTc *createCommandTest) generateRunExecutionConfigs() map[string]test
 		},
 		"test_create_container_file_invalid_path": {
 			flags: map[string]string{
-				createCmdFlagContainerFile: "/test/test",
+				createCmdFlagContainerFile: "/test/test.json",
 			},
 			mockExecution: createTc.mockExecCreateContainerFileInvalidPath,
 		},
@@ -501,6 +501,12 @@ func (createTc *createCommandTest) generateRunExecutionConfigs() map[string]test
 			},
 			mockExecution: createTc.mockExecCreateContainerFileWithArgs,
 		},
+		"test_create_container_file_with_non_json": {
+			flags: map[string]string{
+				createCmdFlagContainerFile: "../pkg/testutil/config/container/non_json_files/file1.txt",
+			},
+			mockExecution: createTc.mockExecCreateContainerFileWithNonJSON,
+		},
 		// Test terminal
 		"test_create_terminal": {
 			args: createCmdArgs,
@@ -1020,7 +1026,7 @@ func (createTc *createCommandTest) mockExecCreateContainerFile(_ []string) error
 
 func (createTc *createCommandTest) mockExecCreateContainerFileInvalidPath(_ []string) error {
 	createTc.mockClient.EXPECT().Create(gomock.AssignableToTypeOf(context.Background()), gomock.Any()).Times(0)
-	_, err := os.ReadFile("/test/test")
+	_, err := os.ReadFile("/test/test.json")
 	return err
 }
 
@@ -1036,6 +1042,14 @@ func (createTc *createCommandTest) mockExecCreateContainerFileWithArgs(_ []strin
 	return log.NewError("no arguments are expected when creating a container from file")
 }
 
+func (createTc *createCommandTest) mockExecCreateContainerFileWithNonJSON(_ []string) error {
+	createTc.mockClient.EXPECT().Create(gomock.AssignableToTypeOf(context.Background()), gomock.Any()).Times(0)
+	if !strings.HasSuffix("../pkg/testutil/config/container/non_json_files/file1.txt", ".json") {
+		return log.NewError("../pkg/testutil/config/container/non_json_files/file1.txt is not a json file")
+	}
+	return nil
+}
+
 func (createTc *createCommandTest) mockExecCreateWithTerminal(args []string) error {
 	container := initExpectedCtr(&types.Container{
 		Image: types.Image{