chore: migration 1

libs/cli/internal/root/root_test.go

@@ -0,0 +1,205 @@
+package root
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestRunHelp(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	exitCode := Run(nil, &stdout, &stderr)
+
+	if exitCode != 0 {
+		t.Fatalf("expected exit code 0, got %d", exitCode)
+	}
+	if stderr.Len() != 0 {
+		t.Fatalf("expected no stderr output, got %q", stderr.String())
+	}
+	if !strings.Contains(stdout.String(), "validate") {
+		t.Fatalf("expected help text to contain 'validate', got %q", stdout.String())
+	}
+}
+
+func TestRunVersion(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	exitCode := Run([]string{"version"}, &stdout, &stderr)
+
+	if exitCode != 0 {
+		t.Fatalf("expected exit code 0, got %d", exitCode)
+	}
+	if stderr.Len() != 0 {
+		t.Fatalf("expected no stderr output, got %q", stderr.String())
+	}
+	if !strings.Contains(stdout.String(), "langgraph") {
+		t.Fatalf("unexpected stdout: %q", stdout.String())
+	}
+}
+
+func TestRunUnknownCommand(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	exitCode := Run([]string{"nonexistent-cmd"}, &stdout, &stderr)
+
+	if exitCode != 1 {
+		t.Fatalf("expected exit code 1, got %d", exitCode)
+	}
+	if !strings.Contains(stderr.String(), "is not a langgraph command") {
+		t.Fatalf("unexpected stderr: %q", stderr.String())
+	}
+}
+
+func writeTempConfig(t *testing.T, content string) string {
+	t.Helper()
+	dir := t.TempDir()
+	path := filepath.Join(dir, "langgraph.json")
+	if err := os.WriteFile(path, []byte(content), 0644); err != nil {
+		t.Fatalf("failed to write temp config: %v", err)
+	}
+	return path
+}
+
+func TestRunValidateWithValidConfig(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	path := writeTempConfig(t, `{"dependencies": ["langchain"], "graphs": {"agent": "./agent.py:graph"}}`)
+
+	exitCode := Run([]string{"validate", "-c", path}, &stdout, &stderr)
+
+	if exitCode != 0 {
+		t.Fatalf("expected exit code 0, got %d; stderr: %q", exitCode, stderr.String())
+	}
+	if !strings.Contains(stdout.String(), "is valid") {
+		t.Fatalf("expected stdout to contain 'is valid', got %q", stdout.String())
+	}
+	if !strings.Contains(stdout.String(), "1 graph") {
+		t.Fatalf("expected stdout to contain '1 graph', got %q", stdout.String())
+	}
+}
+
+func TestRunValidateWithInvalidConfig(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	path := writeTempConfig(t, `{"graphs": {}}`)
+
+	exitCode := Run([]string{"validate", "-c", path}, &stdout, &stderr)
+
+	if exitCode != 1 {
+		t.Fatalf("expected exit code 1, got %d", exitCode)
+	}
+	if !strings.Contains(stderr.String(), "No graphs found") {
+		t.Fatalf("expected stderr to contain 'No graphs found', got %q", stderr.String())
+	}
+}
+
+func TestRunValidateWithInvalidJSON(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	path := writeTempConfig(t, `{invalid json`)
+
+	exitCode := Run([]string{"validate", "-c", path}, &stdout, &stderr)
+
+	if exitCode != 1 {
+		t.Fatalf("expected exit code 1, got %d", exitCode)
+	}
+	if !strings.Contains(stderr.String(), "Invalid JSON") {
+		t.Fatalf("expected stderr to contain 'Invalid JSON', got %q", stderr.String())
+	}
+}
+
+func TestRunValidateDefaultConfigMissing(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	// Use a path that definitely does not exist.
+	nonexistent := filepath.Join(t.TempDir(), "langgraph.json")
+
+	exitCode := Run([]string{"validate", "-c", nonexistent}, &stdout, &stderr)
+
+	if exitCode != 1 {
+		t.Fatalf("expected exit code 1, got %d", exitCode)
+	}
+	if !strings.Contains(stderr.String(), "does not exist") {
+		t.Fatalf("expected stderr to contain 'does not exist', got %q", stderr.String())
+	}
+}
+
+func TestRunValidateWithUnknownKeys(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	path := writeTempConfig(t, `{"dependencies": ["langchain"], "graphs": {"agent": "./agent.py:graph"}, "grpahs": {}}`)
+
+	exitCode := Run([]string{"validate", "-c", path}, &stdout, &stderr)
+
+	if exitCode != 0 {
+		t.Fatalf("expected exit code 0, got %d; stderr: %q", exitCode, stderr.String())
+	}
+	out := stdout.String()
+	if !strings.Contains(strings.ToLower(out), "warning") {
+		t.Fatalf("expected stdout to contain 'warning', got %q", out)
+	}
+	if !strings.Contains(strings.ToLower(out), "did you mean") {
+		t.Fatalf("expected stdout to contain 'did you mean', got %q", out)
+	}
+}
+
+func TestRunValidateHelp(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	exitCode := Run([]string{"validate", "--help"}, &stdout, &stderr)
+
+	if exitCode != 0 {
+		t.Fatalf("expected exit code 0, got %d", exitCode)
+	}
+	if !strings.Contains(stdout.String(), "Validate the LangGraph configuration file") {
+		t.Fatalf("expected stdout to contain validate help text, got %q", stdout.String())
+	}
+}
+
+func TestRunValidateMultipleGraphs(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	path := writeTempConfig(t, `{"dependencies": ["langchain"], "graphs": {"agent": "./a.py:g", "bot": "./b.py:g"}}`)
+
+	exitCode := Run([]string{"validate", "-c", path}, &stdout, &stderr)
+
+	if exitCode != 0 {
+		t.Fatalf("expected exit code 0, got %d; stderr: %q", exitCode, stderr.String())
+	}
+	if !strings.Contains(stdout.String(), "2 graphs found") {
+		t.Fatalf("expected stdout to contain '2 graphs found', got %q", stdout.String())
+	}
+}
+
+func TestRunValidateWithWarningsAndErrors(t *testing.T) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+
+	path := writeTempConfig(t, `{"graphs": {}, "grpahs": {}}`)
+
+	exitCode := Run([]string{"validate", "-c", path}, &stdout, &stderr)
+
+	if exitCode != 1 {
+		t.Fatalf("expected exit code 1, got %d", exitCode)
+	}
+	errOut := stderr.String()
+	if !strings.Contains(errOut, "No graphs found") {
+		t.Fatalf("expected stderr to contain 'No graphs found', got %q", errOut)
+	}
+	if !strings.Contains(strings.ToLower(errOut), "warning") {
+		t.Fatalf("expected stderr to contain 'warning', got %q", errOut)
+	}
+}