Improve actionable error guidance

1 files changed, 5 insertions, 0 deletions

diff --git a/internal/llm/provider_test.go b/internal/llm/provider_test.go
index 8ccba6e..14de7a6 100644
--- a/internal/llm/provider_test.go
+++ b/internal/llm/provider_test.go
@@ -1,6 +1,7 @@
 package llm
 
 import (
+	"strings"
 	"testing"
 )
 
@@ -8,9 +9,13 @@ func TestNewFromConfig_DefaultsAndErrors(t *testing.T) {
 	// Unknown provider
 	if _, err := NewFromConfig(Config{Provider: "bogus"}, "", "", ""); err == nil {
 		t.Fatalf("expected error for unknown provider")
+	} else if !strings.Contains(err.Error(), "supported providers:") {
+		t.Fatalf("expected supported providers hint, got %q", err.Error())
 	}
 	// OpenAI missing key
 	if _, err := NewFromConfig(Config{Provider: "openai", OpenAIModel: "g"}, "", "", ""); err == nil {
 		t.Fatalf("expected key error")
+	} else if !strings.Contains(err.Error(), "OPENAI_API_KEY") || !strings.Contains(err.Error(), "HEXAI_OPENAI_API_KEY") {
+		t.Fatalf("expected actionable API key hint, got %q", err.Error())
 	}
 }