chore: Add init tests in shellspec

app/commands.go

@@ -11,7 +11,8 @@ import (
 
 // GlobalState configurable by user to be passed through to Hermit.
 type GlobalState struct {
-	Env envars.Envars `help:"Extra environment variables to apply to environments."`
+	Env        envars.Envars `help:"Extra environment variables to apply to environments."`
+	UserConfig string        `hidden:"" help:"Path to Hermit user configuration file." default:"~/.hermit.hcl" env:"HERMIT_USER_CONFIG"`
 }
 
 type cliInterface interface {

app/init_cmd.go

@@ -13,17 +13,12 @@ type initCmd struct {
 	Dir     string   `arg:"" help:"Directory to create environment in (${default})." default:"${env}" predictor:"dir"`
 }
 
-func (i *initCmd) Run(w *ui.UI, config Config) error {
+func (i *initCmd) Run(w *ui.UI, config Config, userConfig UserConfig) error {
 	_, sum, err := GenInstaller(config)
 	if err != nil {
 		return errors.WithStack(err)
 	}
 
-	userConfig, err := LoadUserConfig()
-	if err != nil {
-		return errors.WithStack(err)
-	}
-
 	sources := i.Sources
 	if len(sources) == 0 {
 		w.Tracef("Using init_sources from user config: %v", userConfig.InitSources)

app/main.go

@@ -167,7 +167,8 @@ func Main(config Config) {
 		cli = &unactivated{cliBase: common}
 	}
 
-	userConfig, err := LoadUserConfig()
+	userConfigPath := cli.getGlobalState().UserConfig
+	userConfig, err := LoadUserConfig(userConfigPath)
 	if err != nil {
 		log.Printf("%s: %s", userConfigPath, err)
 	}

app/user_config.go

@@ -9,8 +9,6 @@ import (
 	"github.com/cashapp/hermit/errors"
 )
 
-const userConfigPath = "~/.hermit.hcl"
-
 var userConfigSchema = func() string {
 	schema, err := hcl.Schema(&UserConfig{})
 	if err != nil {
@@ -33,11 +31,12 @@ type UserConfig struct {
 }
 
 // LoadUserConfig from disk.
-func LoadUserConfig() (UserConfig, error) {
+func LoadUserConfig(configPath string) (UserConfig, error) {
 	config := UserConfig{}
 	// always return a valid config on error, with defaults set.
 	_ = hcl.Unmarshal([]byte{}, &config)
-	data, err := os.ReadFile(kong.ExpandPath(userConfigPath))
+
+	data, err := os.ReadFile(kong.ExpandPath(configPath))
 	if os.IsNotExist(err) {
 		return config, nil
 	} else if err != nil {

it/full/spec/it_spec.sh

@@ -19,6 +19,45 @@ Describe "Hermit"
     End
   End
 
+  Describe "Hermit Init"
+    Describe "Using init_sources from user config"
+      It "initializes the environment with sources from hermit.hcl"
+        # Create a custom hermit.hcl with init_sources.
+        cat > hermit.hcl <<EOF
+init_sources = ["source1", "source2"]
+EOF
+
+        # Run hermit init with the custom config.
+        When run command ../../bin/hermit init --user-config hermit.hcl
+
+        # Verify that the environment is initialized with the correct sources.
+        The status should be success
+        The file ./bin/hermit.hcl should include "source1"
+        The file ./bin/hermit.hcl should include "source2"
+      End
+    End
+
+    Describe "Command-line sources overriding user config"
+      It "initializes the environment with command-line sources"
+        # Create a custom hermit.hcl with init_sources.
+        cat > hermit.hcl <<EOF
+init_sources = ["source1", "source2"]
+EOF
+        # Run hermit init with additional command-line sources.
+        When run command ../../bin/hermit init --user-config hermit.hcl --sources source3,source4
+
+        # Verify that the environment is initialized with the command-line sources.
+        The status should be success
+        The file ./bin/hermit.hcl should include "source3"
+        The file ./bin/hermit.hcl should include "source4"
+
+        # Verify that user config sources are NOT present.
+        The file ./bin/hermit.hcl should not include "source1"
+        The file ./bin/hermit.hcl should not include "source2"
+      End
+    End
+  End
+
   Describe "Activating the environment"
       It "sets the environment correctly"
         When call source ./bin/activate-hermit