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Implement a dry-run mode for isolationtester

This mode prints out the permutations that would be run by the givenspec file, in the same format used by the permutation lines in specfiles. This helps in building new spec files.Author: Alexander Shulgin, with some tweaks by me

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src/test/isolation
- isolationtester.c

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+63

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`‎src/test/isolation/isolationtester.c`

Lines changed: 63 additions & 10 deletions

Original file line number	Diff line number	Diff line change
`@@ -35,6 +35,10 @@ static PGconn **conns = NULL;`
`35`	`35`	`staticconstchar**backend_pids=NULL;`
`36`	`36`	`staticintnconns=0;`
`37`	`37`
	`38`	`+/* In dry run only output permutations to be run by the tester. */`
	`39`	`+staticintdry_run= false;`
	`40`	`+`
	`41`	`+staticvoidrun_testspec(TestSpec*testspec);`
`38`	`42`	`staticvoidrun_all_permutations(TestSpec*testspec);`
`39`	`43`	`staticvoidrun_all_permutations_recurse(TestSpec*testspec,intnsteps,`
`40`	`44`	`Step**steps);`
`@@ -69,20 +73,46 @@ main(int argc, char **argv)`
`69`	`73`	`inti;`
`70`	`74`	`PGresult*res;`
`71`	`75`	`PQExpBufferDatawait_query;`
	`76`	`+intopt;`
	`77`	`+`
	`78`	`+while ((opt=getopt(argc,argv,"n"))!=-1)`
	`79`	`+{`
	`80`	`+switch (opt)`
	`81`	`+{`
	`82`	`+case'n':`
	`83`	`+dry_run= true;`
	`84`	`+break;`
	`85`	`+default:`
	`86`	`+fprintf(stderr,"Usage: isolationtester [-n] [CONNINFO]\n");`
	`87`	`+returnEXIT_FAILURE;`
	`88`	`+}`
	`89`	`+}`
`72`	`90`
`73`	`91`	`/*`
`74`		`- * If the user supplies a parameter on the command line, use it as the`
`75`		`- * conninfo string; otherwise default to setting dbname=postgres and using`
`76`		`- * environment variables or defaults for all other connection parameters.`
	`92`	`+ * If the user supplies a non-option parameter on the command line, use it`
	`93`	`+ * as the conninfo string; otherwise default to setting dbname=postgres and`
	`94`	`+ * using environment variables or defaults for all other connection`
	`95`	`+ * parameters.`
`77`	`96`	`*/`
`78`		`-if (argc>1)`
`79`		`-conninfo=argv[1];`
	`97`	`+if (argc>optind)`
	`98`	`+conninfo=argv[optind];`
`80`	`99`	`else`
`81`	`100`	`conninfo="dbname = postgres";`
`82`	`101`
`83`	`102`	`/* Read the test spec from stdin */`
`84`	`103`	`spec_yyparse();`
`85`	`104`	`testspec=&parseresult;`
	`105`	`+`
	`106`	`+/*`
	`107`	`+ * In dry-run mode, just print the permutations that would be run, and`
	`108`	`+ * exit.`
	`109`	`+ */`
	`110`	`+if (dry_run)`
	`111`	`+{`
	`112`	`+run_testspec(testspec);`
	`113`	`+return0;`
	`114`	`+}`
	`115`	`+`
`86`	`116`	`printf("Parsed test spec with %d sessions\n",testspec->nsessions);`
`87`	`117`
`88`	`118`	`/*`
`@@ -240,10 +270,7 @@ main(int argc, char **argv)`
`240`	`270`	`* Run the permutations specified in the spec, or all if none were`
`241`	`271`	`* explicitly specified.`
`242`	`272`	`*/`
`243`		`-if (testspec->permutations)`
`244`		`-run_named_permutations(testspec);`
`245`		`-else`
`246`		`-run_all_permutations(testspec);`
	`273`	`+run_testspec(testspec);`
`247`	`274`
`248`	`275`	`/* Clean up and exit */`
`249`	`276`	`for (i=0;i<nconns;i++)`
`@@ -253,6 +280,19 @@ main(int argc, char **argv)`
`253`	`280`
`254`	`281`	`staticint*piles;`
`255`	`282`
	`283`	`+/*`
	`284`	`+ * Run the permutations specified in the spec, or all if none were`
	`285`	`+ * explicitly specified.`
	`286`	`+ */`
	`287`	`+staticvoid`
	`288`	`+run_testspec(TestSpec*testspec)`
	`289`	`+{`
	`290`	`+if (testspec->permutations)`
	`291`	`+run_named_permutations(testspec);`
	`292`	`+else`
	`293`	`+run_all_permutations(testspec);`
	`294`	`+}`
	`295`	`+`
`256`	`296`	`/*`
`257`	`297`	`* Run all permutations of the steps and sessions.`
`258`	`298`	`*/`
`@@ -437,6 +477,19 @@ run_permutation(TestSpec * testspec, int nsteps, Step ** steps)`
`437`	`477`	`inti;`
`438`	`478`	`Step*waiting=NULL;`
`439`	`479`
	`480`	`+/*`
	`481`	`+ * In dry run mode, just display the permutation in the same format used by`
	`482`	`+ * spec files, and return.`
	`483`	`+ */`
	`484`	`+if (dry_run)`
	`485`	`+{`
	`486`	`+printf("permutation");`
	`487`	`+for (i=0;i<nsteps;i++)`
	`488`	`+printf(" \"%s\"",steps[i]->name);`
	`489`	`+printf("\n");`
	`490`	`+return;`
	`491`	`+}`
	`492`	`+`
`440`	`493`	`printf("\nstarting permutation:");`
`441`	`494`	`for (i=0;i<nsteps;i++)`
`442`	`495`	`printf(" %s",steps[i]->name);`
`@@ -649,7 +702,7 @@ try_complete_step(Step *step, int flags)`
`649`	`702`	`}`
`650`	`703`	`/* Detail may contain xid values, so just show primary. */`
`651`	`704`	`step->errormsg=malloc(5+`
`652`		`-strlen(PQresultErrorField(res,PG_DIAG_SEVERITY))+`
	`705`	`+strlen(PQresultErrorField(res,PG_DIAG_SEVERITY))+`
`653`	`706`	`strlen(PQresultErrorField(res,`
`654`	`707`	`PG_DIAG_MESSAGE_PRIMARY)));`
`655`	`708`	`sprintf(step->errormsg,"%s: %s",`

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`‎src/test/isolation/isolationtester.c`

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