diff options
Diffstat (limited to 'lib/common_test/doc/src')
| -rw-r--r-- | lib/common_test/doc/src/basics_chapter.xml | 5 | ||||
| -rw-r--r-- | lib/common_test/doc/src/ct_hooks_chapter.xml | 28 | ||||
| -rw-r--r-- | lib/common_test/doc/src/ct_run.xml | 3 | ||||
| -rw-r--r-- | lib/common_test/doc/src/getting_started_chapter.xml | 3 | ||||
| -rw-r--r-- | lib/common_test/doc/src/run_test_chapter.xml | 12 | ||||
| -rw-r--r-- | lib/common_test/doc/src/write_test_chapter.xml | 87 |
6 files changed, 118 insertions, 20 deletions
diff --git a/lib/common_test/doc/src/basics_chapter.xml b/lib/common_test/doc/src/basics_chapter.xml index 20141d2561..d43ac44ac5 100644 --- a/lib/common_test/doc/src/basics_chapter.xml +++ b/lib/common_test/doc/src/basics_chapter.xml @@ -141,8 +141,9 @@ individual test case. </p> <p> - The test suite module must conform to a callback interface specified - by the CT test server. See the + The test suite module must conform to a + <seealso marker="common_test">callback interface</seealso> + specified by the CT test server. See the <seealso marker="write_test_chapter#intro">Writing Test Suites</seealso> chapter for more information. </p> diff --git a/lib/common_test/doc/src/ct_hooks_chapter.xml b/lib/common_test/doc/src/ct_hooks_chapter.xml index c5b4fd0073..cb06e570bd 100644 --- a/lib/common_test/doc/src/ct_hooks_chapter.xml +++ b/lib/common_test/doc/src/ct_hooks_chapter.xml @@ -189,6 +189,22 @@ it.</p> </section> + <section> + <title>External configuration data and Logging</title> + <p>It's possible in the CTH to read configuration data values + by calling <c>ct:get_config/1/2/3</c> (as explained in the + <seealso marker="config_file_chapter#require_config_data"> + External configuration data</seealso> + chapter). The config variables in question must, as always, first have been + <c>required</c> by means of a suite-, group-, or test case info function, + or the <c>ct:require/1/2</c> function. Note that the latter can also be used + in CT hook functions.</p> + <p>The CT hook functions may call any of the logging functions available + in the <c>ct</c> interface to print information to the log files, or to + add comments in the suite overview page. + </p> + </section> + </section> <marker id="manipulating"/> @@ -201,11 +217,13 @@ functions for a CTH follow a common interface, this interface is described below.</p> - <p>It is only possible to hook into test function which exists in the test - suite. So in order for a CTH to hook in before - <seealso marker="common_test#Module:init_per_suite-1">init_per_suite</seealso>, - the <seealso marker="common_test#Module:init_per_suite-1">init_per_suite</seealso> - function must exist in the test suite.</p> + <p>Common Test will always call all available hook functions, even pre- and post + hooks for configuration functions that are not implemented in the suite. + For example, <c>pre_init_per_suite(x_SUITE, ...)</c> and + <c>post_init_per_suite(x_SUITE, ...)</c> will be called for test suite + <c>x_SUITE</c>, even if it doesn't export <c>init_per_suite/1</c>. This feature + makes it possible to use hooks as configuration fallbacks, or even + completely replace all configuration functions with hook functions.</p> <marker id="pre"/> <section> diff --git a/lib/common_test/doc/src/ct_run.xml b/lib/common_test/doc/src/ct_run.xml index b01ab3667d..4d4521957c 100644 --- a/lib/common_test/doc/src/ct_run.xml +++ b/lib/common_test/doc/src/ct_run.xml @@ -103,6 +103,7 @@ [-no_auto_compile] [-muliply_timetraps Multiplier] [-scale_timetraps] + [-create_priv_dir auto_per_run | auto_per_tc | manual_per_tc] [-repeat N [-force_stop]] | [-duration HHMMSS [-force_stop]] | [-until [YYMoMoDD]HHMMSS [-force_stop]] @@ -130,6 +131,7 @@ [-no_auto_compile] [-muliply_timetraps Multiplier] [-scale_timetraps] + [-create_priv_dir auto_per_run | auto_per_tc | manual_per_tc] [-repeat N [-force_stop]] | [-duration HHMMSS [-force_stop]] | [-until [YYMoMoDD]HHMMSS [-force_stop]] @@ -150,6 +152,7 @@ [-no_auto_compile] [-muliply_timetraps Multiplier] [-scale_timetraps] + [-create_priv_dir auto_per_run | auto_per_tc | manual_per_tc] [-basic_html]</pre> </section> <section> diff --git a/lib/common_test/doc/src/getting_started_chapter.xml b/lib/common_test/doc/src/getting_started_chapter.xml index 7de0912036..05e21241cb 100644 --- a/lib/common_test/doc/src/getting_started_chapter.xml +++ b/lib/common_test/doc/src/getting_started_chapter.xml @@ -98,7 +98,8 @@ <section> <title>A simple test suite</title> <p>As you've seen in the basics chapter, the test suite module implements - callback functions (mandatory or optional) for various purposes, e.g: + <seealso marker="common_test">callback functions</seealso> + (mandatory or optional) for various purposes, e.g: <list> <item>Init/end configuration function for the test suite</item> <item>Init/end configuration function for a test case</item> diff --git a/lib/common_test/doc/src/run_test_chapter.xml b/lib/common_test/doc/src/run_test_chapter.xml index 848f278fa6..b3ec524b21 100644 --- a/lib/common_test/doc/src/run_test_chapter.xml +++ b/lib/common_test/doc/src/run_test_chapter.xml @@ -466,6 +466,9 @@ {logdir, LogDir}. {logdir, NodeRefs, LogDir}. + + {create_priv_dir, PrivDirOption}. + {create_priv_dir, NodeRefs, PrivDirOption}. {event_handler, EventHandlers}. {event_handler, NodeRefs, EventHandlers}. @@ -493,6 +496,9 @@ {skip_suites, DirRef, Suites, Comment}. {skip_suites, NodeRefs, DirRef, Suites, Comment}. + + {skip_groups, DirRef, Suite, GroupNames, Comment}. + {skip_groups, NodeRefs, DirRef, Suite, GroupNames, Comment}. {skip_cases, DirRef, Suite, Cases, Comment}. {skip_cases, NodeRefs, DirRef, Suite, Cases, Comment}. @@ -512,6 +518,7 @@ DirAlias = atom() Dir = string() LogDir = string() + PrivDirOption = auto_per_run | auto_per_tc | manual_per_tc EventHandlers = atom() | [atom()] InitArgs = [term()] CTHModules = [CTHModule | {CTHModule, CTHInitArgs} | {CTHModule, CTHInitArgs, CTHPriority}] @@ -521,8 +528,9 @@ Suites = atom() | [atom()] | all Suite = atom() Groups = GroupSpec | [GroupSpec] | all - GroupSpec = Group | {Group,Properties} | {Group,Properties,GroupSpec} - Group = atom() + GroupSpec = GroupName | {GroupName,Properties} | {GroupName,Properties,GroupSpec} + GroupName = atom() + GroupNames = GroupName | [GroupName] Cases = atom() | [atom()] | all Comment = string() | "" </pre> diff --git a/lib/common_test/doc/src/write_test_chapter.xml b/lib/common_test/doc/src/write_test_chapter.xml index c0ec26ddcc..09f4f8ed3b 100644 --- a/lib/common_test/doc/src/write_test_chapter.xml +++ b/lib/common_test/doc/src/write_test_chapter.xml @@ -29,7 +29,6 @@ <file>write_test_chapter.xml</file> </header> - <section> <marker id="intro"></marker> <title>Support for test suite authors</title> @@ -63,7 +62,8 @@ function in CT will not be able to locate it (at least not per default). </p> - <p>The <c>ct.hrl</c> header file must be included in all test suite files. + <p>It is also recommended that the <c>ct.hrl</c> header file is included + in all test suite modules. </p> <p>Each test suite module must export the function <c>all/0</c> @@ -71,6 +71,12 @@ to be executed in that module. </p> + <p>The callback functions that the test suite should implement, and + which will be described in more detail below, are + all listed in the <seealso marker="common_test">common_test + reference manual page</seealso>. + </p> + </section> <section> @@ -113,6 +119,14 @@ suite will be skipped automatically (so called <em>auto skipped</em>), including <c>end_per_suite</c>. </p> + + <p>Note that if <c>init_per_suite</c> and <c>end_per_suite</c> do not exist + in the suite, Common Test calls dummy functions (with the same names) + instead, so that output generated by hook functions may be saved to the log + files for these dummies + (see the <seealso marker="ct_hooks_chapter#manipulating">Common Test Hooks</seealso> + chapter for more information). + </p> </section> <marker id="per_testcase"/> @@ -513,8 +527,7 @@ execution is immediately stopped and the rest of the cases skipped.</p> <p>Before execution of a group begins, the configuration function - <c>init_per_group(GroupName, Config)</c> is called (the function is - mandatory if one or more test case groups are defined). The list of tuples + <c>init_per_group(GroupName, Config)</c> is called. The list of tuples returned from this function is passed to the test cases in the usual manner by means of the <c>Config</c> argument. <c>init_per_group/2</c> is meant to be used for initializations common for the test cases in the @@ -522,6 +535,14 @@ <c>end_per_group(GroupName, Config</c> function is called. This function is meant to be used for cleaning up after <c>init_per_group/2</c>.</p> + <p>Whenever a group is executed, if <c>init_per_group</c> and + <c>end_per_group</c> do not exist in the suite, Common Test calls + dummy functions (with the same names) instead. Output generated by + hook functions will be saved to the log files for these dummies + (see the <seealso marker="ct_hooks_chapter#manipulating">Common Test + Hooks</seealso> chapter for more information). + </p> + <note><p><c>init_per_testcase/2</c> and <c>end_per_testcase/2</c> are always called for each individual test case, no matter if the case belongs to a group or not.</p></note> @@ -611,6 +632,25 @@ </section> <section> + <title>Parallel test cases and IO</title> + <p>A parallel test case has a private IO server as its group leader. + (Please see the Erlang Run-Time System Application documentation for + a description of the group leader concept). The + central IO server process that handles the output from regular test + cases and configuration functions, does not respond to IO messages + during execution of parallel groups. This is important to understand + in order to avoid certain traps, like this one:</p> + <p>If a process, <c>P</c>, is spawned during execution of e.g. + <c>init_per_suite/1</c>, it will inherit the group leader of the + <c>init_per_suite</c> process. This group leader is the central IO server + process mentioned above. If, at a later time, <em>during parallel test case + execution</em>, some event triggers process <c>P</c> to call + <c>io:format/1/2</c>, that call will never return (since the group leader + is in a non-responsive state) and cause <c>P</c> to hang. + </p> + </section> + + <section> <title>Repeated groups</title> <marker id="repeated_groups"></marker> <p>A test case group may be repeated a certain number of times @@ -745,7 +785,7 @@ <marker id="data_priv_dir"></marker> <title>Data and Private Directories</title> - <p>The data directory (<c>data_dir</c>) is the directory where the + <p>The data directory, <c>data_dir</c>, is the directory where the test module has its own files needed for the testing. The name of the <c>data_dir</c> is the the name of the test suite followed by <c>"_data"</c>. For example, @@ -769,12 +809,39 @@ </p> --> <p> - The <c>priv_dir</c> is the test suite's private directory. This - directory should be used when a test case needs to write to - files. The name of the private directory is generated by the test - server, which also creates the directory. + <c>priv_dir</c> is the private directory for the test cases. + This directory may be used whenever a test case (or configuration function) + needs to write something to file. The name of the private directory is + generated by Common Test, which also creates the directory. </p> - + <p>By default, Common Test creates one central private directory + per test run that all test cases share. This may not always be suitable, + especially if the same test cases are executed multiple times during + a test run (e.g. if they belong to a test case group with repeat + property), and there's a risk that files in the private directory get + overwritten. Under these circumstances, it's possible to configure + Common Test to create one dedicated private directory per + test case and execution instead. This is accomplished by means of + the flag/option: <c>create_priv_dir</c> (to be used with the + <c>ct_run</c> program, the <c>ct:run_test/1</c> function, or + as test specification term). There are three possible values + for this option: + <list> + <item><c>auto_per_run</c></item> + <item><c>auto_per_tc</c></item> + <item><c>manual_per_tc</c></item> + </list> + The first value indicates the default priv_dir behaviour, i.e. + one private directory created per test run. The two latter + values tell Common Test to generate a unique test directory name + per test case and execution. If the auto version is used, <em>all</em> + private directories will be created automatically. This can obviously + become very inefficient for test runs with many test cases and/or + repetitions. Therefore, in case the manual version is instead used, the + test case must tell Common Test to create priv_dir when it needs it. + It does this by calling the function <c>ct:make_priv_dir/0</c>. + </p> + <note><p>You should not depend on current working directory for reading and writing data files since this is not portable. All scratch files are to be written in the <c>priv_dir</c> and all |