{"id":207736,"date":"2025-07-08T14:24:05","date_gmt":"2025-07-08T06:24:05","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207736\/"},"modified":"2025-07-08T14:24:05","modified_gmt":"2025-07-08T06:24:05","slug":"%e5%a6%82%e4%bd%95%e6%a8%a1%e6%8b%9f-exec-cmd-exec-command%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207736\/","title":{"rendered":"\u5982\u4f55\u6a21\u62df *exec.Cmd \/ exec.Command()\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>\u5982\u4f55\u6a21\u62df *exec.Cmd \/ exec.Command()\uff1f<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-25 10:24:35<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728Golang\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300a\u5982\u4f55\u6a21\u62df *exec.Cmd \/ exec.Command()\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u9700\u8981\u6a21\u62df <code>exec.command()<\/code>\u3002<\/p>\n<p>\u6211\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u5f0f\u6a21\u62df\u5b83\uff1a<\/p>\n<pre>var rname string\nvar rargs []string\n\nmockexeccommand := func(name string, arg ...string) *exec.cmd {\n    rname = name\n    rargs = arg\n\n    return nil\n}\n<\/pre>\n<p>\u4f46\u662f\uff0c\u8fd9\u5728\u5b9e\u9645\u4ee3\u7801\u4e2d\u4e0d\u8d77\u4f5c\u7528\uff0c\u56e0\u4e3a\u5b83\u4f1a\u62b1\u6028 nil \u6307\u9488\uff0c\u56e0\u4e3a\u8fd4\u56de\u7684 <code>exec.cmd<\/code> \u8c03\u7528 <code>run()<\/code>\u3002<\/p>\n<p>\u6211\u8bd5\u56fe\u50cf\u8fd9\u6837\u5632\u7b11\u5b83\uff1a<\/p>\n<pre>type mock exec.cmd\n\nfunc (m *mock) run() error {\n    return nil\n}\n\nvar rname string\nvar rargs []string\n\nmockexeccommand := func(name string, arg ...string) *exec.cmd {\n    rname = name\n    rargs = arg\n\n    m := mock{}\n\n    return &amp;m\n}\n<\/pre>\n<p>\u4f46\u5b83\u62b1\u6028\uff1a<code>\u4e0d\u80fd\u4f7f\u7528 &amp;m \uff08*mock \u7c7b\u578b\u7684\u503c\uff09\u4f5c\u4e3a return \u8bed\u53e5\u4e2d\u7684 *exec.cmd \u503ccompilerincompleteassign<\/code>\u3002<\/p>\n<p>\u6709\u4ec0\u4e48\u529e\u6cd5\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5417\uff1f\u6709\u6ca1\u6709\u66f4\u597d\u7684\u65b9\u6cd5\u6765\u6a21\u62df <code>exec.command()<\/code>\uff1f<\/p>\n<p>\u5982\u679c\u6211\u8fd4\u56de\u201c\u6a21\u62df\u201d\u547d\u4ee4\uff0c\u6a21\u62df\u51fd\u6570\u5c31\u4f1a\u8d77\u4f5c\u7528\uff0c\u5c3d\u7ba1\u6211\u4e5f\u66f4\u559c\u6b22\u63a7\u5236 <code>run()<\/code> \u51fd\u6570\uff1a<\/p>\n<pre>var rName string\nvar rArgs []string\n\nmockExecCommand := func(name string, arg ...string) *exec.Cmd {\n    rName = name\n    rArgs = arg\n\n    return exec.Command(\"echo\")\n}\n<\/pre>\n<p> <\/p>\n<h2>\u6b63\u786e\u7b54\u6848<\/h2>\n<p> <\/p>\n<p>\u5b9e\u9645\u4e0a\u6709\u4e00\u79cd\u65b9\u6cd5\u53ef\u4ee5\u505a\u5230\u8fd9\u4e00\u70b9\u3002\u6240\u6709\u529f\u52b3\u5747\u5f52\u4e8e \u6587\u7ae0\u3002\u8bf7\u67e5\u770b\u4ee5\u4e0b\u5185\u5bb9\u7684\u89e3\u91ca\uff1a<\/p>\n<pre>func fakeExecCommand(command string, args...string) *exec.Cmd {\n    cs := []string{\"-test.run=TestHelperProcess\", \"--\", command}\n    cs = append(cs, args...)\n    cmd := exec.Command(os.Args[0], cs...)\n    cmd.Env = []string{\"GO_WANT_HELPER_PROCESS=1\"}\n    return cmd\n}\n\nfunc TestHelperProcess(t *testing.T){\n    if os.Getenv(\"GO_WANT_HELPER_PROCESS\") != \"1\" {\n        return\n    }\n    os.Exit(0)\n}\n<\/pre>\n<p>\u867d\u7136\u52ab\u6301\u6d4b\u8bd5\u53ef\u6267\u884c\u6587\u4ef6\u4ee5\u8fd0\u884c\u7279\u5b9a\u51fd\u6570\u662f\u6709\u6548\u7684\uff0c\u4f46\u4ec5\u4f7f\u7528\u5e38\u89c4\u4f9d\u8d56\u9879\u6ce8\u5165\u4f1a\u66f4\u76f4\u63a5\u3002\u4e0d\u9700\u8981\u9b54\u6cd5\u3002<\/p>\n<p>\u8bbe\u8ba1\u4e00\u4e2a\u53ef\u4ee5\u8fd0\u884c\u547d\u4ee4\u7684\u63a5\u53e3\uff08\u4f8b\u5982 <code>commandexecutor<\/code>\uff09\uff0c\u7136\u540e\u5c06\u5176\u4e2d\u4e4b\u4e00\u4f5c\u4e3a\u8fd0\u884c\u547d\u4ee4\u6240\u9700\u7684\u4efb\u4f55\u51fd\u6570\u7684\u8f93\u5165\u3002\u7136\u540e\uff0c\u60a8\u53ef\u4ee5\u5728\u6d4b\u8bd5\u671f\u95f4\u63d0\u4f9b\u6ee1\u8db3\u63a5\u53e3\u7684\u6a21\u62df\u5b9e\u73b0\uff08\u624b\u5de5\u5236\u4f5c\u6216\u4f7f\u7528\u60a8\u9009\u62e9\u7684\u5de5\u5177\uff08\u5982 gomock\uff09\u751f\u6210\uff09\u3002\u4e3a\u60a8\u7684\u751f\u4ea7\u4ee3\u7801\u63d0\u4f9b\u771f\u6b63\u7684\u5b9e\u73b0\uff08\u8c03\u7528 <code>exec<\/code> \u5305\uff09\u3002\u60a8\u7684\u6a21\u62df\u5b9e\u73b0\u751a\u81f3\u53ef\u4ee5\u5bf9\u53c2\u6570\u8fdb\u884c\u65ad\u8a00\uff0c\u4ee5\u4fbf\u60a8\u77e5\u9053\u547d\u4ee4\u6b63\u5728\u6b63\u786e\u201c\u6267\u884c\u201d\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u6a21\u62df *exec.Cmd \/ exec.Command()\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207736","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207736","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=207736"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207736\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}