Java Process - Too short lifetime of the process. (Less than 1s...) -
problem:
this.proc.isalive in function make_test return false... don't know why... waits user command... (in case of console)
external program: -> l10_z1_external_test
target: process should life...
l10_z1__test__core.java
package bst_test; import java.io.ioexception; public class l10_z1__test__core { public static void main(string[] args) { // build proccess processbuilder pr_1 = new processbuilder("java", "-jar", "../bst.jar"); try { process proc = pr_1.start(); l10_z1__test__c_tester test_engine = new l10_z1__test__c_tester( proc); string[] cmd; string[] result; cmd = new string[] { "add", "remove" }; result = new string[] { "sucess (add) | ", "sucess (remove) | ", "sucess (add) | ", "sucess (remove) | ", "sucess (add) - duplicate | ", "error (remove) - not found | ", "error (parse) - invalid integer or overflow | ", "error (remove) - not found | ", "sucess (add) | ", "sucess (remove) | ", "sucess (add) | ", "sucess (remove) | ", "sucess (add) | ", "sucess (remove) | ", "sucess (add) | ", "sucess (remove) | ", "sucess (add) | ", "sucess (remove) | ", "sucess (add) | ", "sucess (remove) | ", "error (parse) - invalid integer or overflow | ", "error (remove) - not found | " }; test_engine.make_test("add & search", "this test check - how work add & remove", cmd, result, new string[] { "-3", "4", "-3", "aa", "12", "5", "12", "7", "-12", "-50", "-999999999" }); // stop test; test_engine.stop(); } catch (ioexception ex) { system.out.println("error - problem init | java -jar " + "../bst.jar"); } } } l10_z1__test__c_tester.java
package bst_test; import java.io.bufferedreader; import java.io.bufferedwriter; import java.io.ioexception; import java.io.inputstreamreader; import java.io.outputstreamwriter; public class l10_z1__test__c_tester{ private boolean is_run; /** information victim of test ;) */ private process pr_proc; /** victim process */ private bufferedreader processout; private bufferedwriter processin; /** * default construtor invoke test subject. * @prog_name {string} name of test_subject (program name: eg. closure.java) */ l10_z1__test__c_tester (process in){ this.is_run = false; this.pr_proc = in; if(this.pr_proc.isalive()){ this.processout = new bufferedreader(new inputstreamreader(this.pr_proc.getinputstream())); this.processin = new bufferedwriter(new outputstreamwriter(this.pr_proc.getoutputstream())); this.is_run = true; } } /** * method create test , invoke. while test runing -> program send cmd process, result , validate it. (for multi arguments * @param name {string} name of test * @param desc {string} description of test * @param cmd {string[]} commands sent program. * @param c_res {string[]} correct output. * @param data {string[]} test data. */ public void make_test(string name, string desc, string[] cmd, string[] c_res, string[] data){ if(this.is_run && this.pr_proc.isalive()){ system.out.println("/********************** [" + name + "] - #start **********************/"); system.out.println("desc: " + desc); int j; string out; for(int = 1; <= data.length; i++){ system.out.println("\n\nloop - " + i); for(j = 1; j <= cmd.length && this.pr_proc.isalive(); j++){ try { system.out.println("in: - " + cmd[(j - 1)] + " " + data[(i - 1)]); this.processin.write(cmd[(j - 1)] + " " + data[(i - 1)]); this.processin.flush(); out = this.processout.readline(); system.out.println("out: - " + out + "----------------------------------" + "status: - " + this.check(out, c_res[(i - 1) * (j - 1)] + data[(i - 1)])); } catch (ioexception ex) { system.out.println("error - problem reader/writte buffer"); } } } system.out.println("/********************** [" + name + "] - #end **********************/"); } } /** * method create test , invoke. while test runing -> program send cmd process, result , validate it. (for 1 argument) * @param name {string} name of test * @param desc {string} description of test * @param cmd {string[]} commands sent program. * @param c_res {string[]} correct output. */ public void make_test(string name, string desc, string[] cmd, string[] c_res){ if(this.is_run){ system.out.println("/********************** [" + name + "] - #start **********************/"); system.out.println("desc: " + desc); int count = cmd.length; string out; for(int = 0; < count; i++){ system.out.println("\n\nloop - " + i); try { system.out.println("in: - " + cmd[i]); this.processin.write(cmd[i]); out = this.processout.readline(); system.out.println("out: - " + out + "----------------------------------" + "status: - " + this.check(out, c_res[i])); this.processin.flush(); } catch (ioexception ex) { system.out.println("error - problem reader/writte buffer"); } } system.out.println("/********************** [" + name + "] - #end **********************/"); } } /** * function validate output test subject * @param out {string} out compare cp * @param cp {string} correct template * @return {string} status of test. */ public string check(string out, string cp){ if(out.equals(cp)) return "ok"; else return "fail"; } /** * stop operation -> stop process, close buffer... */ public void stop(){ if(this.is_run && this.pr_proc.isalive() ){ try { this.processin.close(); this.processout.close(); } catch (ioexception ex) { system.out.println("error - problem closing i/o buffers"); } this.pr_proc.destroy(); } } } l10_z1_external_test.java
package bst; import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstreamreader; public class l10_z1_external_test { private l10_z1__bst bst; /** * default constructor l_10_z1__bst init; */ l10_z1_external_test() { this.bst = new l10_z1__bst(); } /** * class nitialize, line reader , controler. */ public void init() { bufferedreader br = new bufferedreader(new inputstreamreader(system.in)); string s = null; try { while((s = br.readline()) != null && !s.equals("quit")) { this.switch_f(s.split(" ")); } } catch (ioexception ex) { system.out.println("error - unknow i/o problem."); } system.out.println("bye"); } /** * method procces user request bst - tree functions or specyfied errors * @param in {string} - request, string format (<command> <number>) */ public void switch_f(string[] in) { string text = null, error_text = "error - unknow command"; if(in.length == 2) { int number = 0; boolean op_status = true; try { number = integer.parseint(in[1]); } catch (numberformatexception e) { op_status = false; system.out.println("error (parse) - invalid integer or overflow | " + in[1]); } if(op_status) if( in[0].equals("add")) { text = "add"; try { this.bst.add(number); system.out.println("sucess (" + text + ") | " + number); } catch (l10_z1__bst_exception ex) { system.out.println("error (" + text + ") - " + ex.getmessage() + " | " + number); } } else if( in[0].equals("remove")) { text = "remove"; try { this.bst.remove(number); system.out.println("sucess (" + text + ") | " + number); } catch (l10_z1__bst_exception ex) { system.out.println("error (" + text + ") - " + ex.getmessage() + " | " + number); } } else if( in[0].equals("search")) { text = "search"; if(this.bst.search(number)) system.out.println("sucess (" + text + ") | " + number); else system.out.println("error (" + text + ") - | " + number); } else system.out.println(error_text); } else if(in.length == 1) if( in[0].equals("list")) { text = "list"; try { this.bst.print_list(this.bst.list_in_order()); } catch (l10_z1__bst_exception ex) { system.out.println("error (" + text + ") - " + ex.getmessage()); } } else system.out.println(error_text); else system.out.println(error_text); } }
are checking process started using process monitor? isolate problem going through series of steps:
- make sure simple command create starting processbuilder process spawns process in operating system. if not, perhaps there problem related concurrency or command syntax.
- if able start process, start 1 can see not terminating in process monitor , call isalive on process. if can true returned that, should @ architecture of testing framework make sure working intended.
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