- Add stdin.go with ReadStdinIfPiped and ReadFileArg helpers - Support @file syntax for --json flag to read payload from file - Fall back to stdin pipe when no --json argument is provided
106 lines
2.7 KiB
Go
106 lines
2.7 KiB
Go
// Copyright 2026 Alibaba Group
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cli
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import (
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"os"
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"path/filepath"
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"strings"
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"testing"
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)
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func TestReadFileArgPlainValue(t *testing.T) {
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t.Parallel()
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val, isFile, err := ReadFileArg("hello world")
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if isFile {
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t.Error("plain value should not be detected as file")
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}
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if val != "hello world" {
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t.Errorf("got %q, want %q", val, "hello world")
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}
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}
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func TestReadFileArgReadsFile(t *testing.T) {
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t.Parallel()
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dir := t.TempDir()
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path := filepath.Join(dir, "input.txt")
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os.WriteFile(path, []byte(`{"title":"test"}`), 0o644)
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val, isFile, err := ReadFileArg("@" + path)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if !isFile {
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t.Error("@file value should be detected as file")
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}
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if val != `{"title":"test"}` {
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t.Errorf("got %q, want %q", val, `{"title":"test"}`)
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}
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}
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func TestReadFileArgEmptyFilename(t *testing.T) {
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t.Parallel()
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_, _, err := ReadFileArg("@")
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if err == nil {
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t.Fatal("expected error for empty filename")
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}
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if !strings.Contains(err.Error(), "must not be empty") {
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t.Errorf("unexpected error: %v", err)
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}
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}
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func TestReadFileArgMissingFile(t *testing.T) {
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t.Parallel()
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_, _, err := ReadFileArg("@/nonexistent/path/file.txt")
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if err == nil {
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t.Fatal("expected error for missing file")
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}
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}
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func TestReadFileArgSizeLimit(t *testing.T) {
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t.Parallel()
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dir := t.TempDir()
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path := filepath.Join(dir, "huge.txt")
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// Create a file slightly over maxStdinSize (write 10MB + 1 byte)
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f, _ := os.Create(path)
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data := strings.Repeat("x", maxStdinSize+1)
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f.WriteString(data)
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f.Close()
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_, _, err := ReadFileArg("@" + path)
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if err == nil {
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t.Fatal("expected error for oversized file")
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}
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if !strings.Contains(err.Error(), "10 MB") {
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t.Errorf("unexpected error: %v", err)
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}
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}
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func TestReadStdinIfPipedReturnsEmptyForTerminal(t *testing.T) {
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// This test runs in a terminal context (go test), so stdin is a terminal.
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// ReadStdinIfPiped should return empty string.
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val, err := ReadStdinIfPiped()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if val != "" {
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t.Errorf("expected empty string for terminal stdin, got %q", val)
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}
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}
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