Add source bundle validation and inspection

internal/app/validate_test.go

@@ -0,0 +1,39 @@
+package app
+
+import (
+	"bytes"
+	"context"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestValidateLocalBundle(t *testing.T) {
+	var stdout bytes.Buffer
+	err := Validate(context.Background(), ValidateOptions{
+		Path:   filepath.Join("..", "bundle", "testdata", "valid_bundle"),
+		Stdout: &stdout,
+	})
+	if err != nil {
+		t.Fatalf("Validate() error = %v", err)
+	}
+	if got, want := stdout.String(), "Validated 1 bundle(s)\n"; got != want {
+		t.Fatalf("stdout = %q, want %q", got, want)
+	}
+}
+
+func TestValidateExampleSourceBundle(t *testing.T) {
+	err := Validate(context.Background(), ValidateOptions{
+		Path: filepath.Join("..", "..", "examples", "source-bundle"),
+	})
+	if err != nil {
+		t.Fatalf("Validate() example error = %v", err)
+	}
+}
+
+func TestValidateRequiresPath(t *testing.T) {
+	err := Validate(context.Background(), ValidateOptions{})
+	if err == nil || !strings.Contains(err.Error(), "requires a path") {
+		t.Fatalf("Validate() error = %v, want required path", err)
+	}
+}