<a name="transcript"></a>
# Transcript
[[!template text="Hi! My name is Eduardo Ochs." start="00:00:00.240" video="mainVideo" id=subtitle]]
[[!template text="I'm the author of" start="00:00:01.839" video="mainVideo" id=subtitle]]
[[!template text="an Emacs package called eev," start="00:00:02.639" video="mainVideo" id=subtitle]]
[[!template text="and this talk is about" start="00:00:04.319" video="mainVideo" id=subtitle]]
[[!template text="a new feature of eev" start="00:00:05.279" video="mainVideo" id=subtitle]]
[[!template text="called "test blocks"." start="00:00:06.480" video="mainVideo" id=subtitle]]
[[!template text="Let's start by a demo." start="00:00:08.400" video="mainVideo" id=subtitle]]
[[!template text="This is a file in Lua that defines" start="00:00:10.320" video="mainVideo" id=subtitle]]
[[!template text="these two functions here," start="00:00:12.320" video="mainVideo" id=subtitle]]
[[!template text="and if we type <f8> several times here," start="00:00:14.160" video="mainVideo" id=subtitle]]
[[!template text="the <f8>s create a Lua REPL here" start="00:00:18.000" video="mainVideo" id=subtitle]]
[[!template text="and then they send these lines" start="00:00:20.720" video="mainVideo" id=subtitle]]
[[!template text="to the REPL, where this line here" start="00:00:22.240" video="mainVideo" id=subtitle]]
[[!template text="loads this file into the REPL," start="00:00:25.840" video="mainVideo" id=subtitle]]
[[!template text="and these other lines here" start="00:00:27.840" video="mainVideo" id=subtitle]]
[[!template text="are tests for these lines." start="00:00:29.679" video="mainVideo" id=subtitle]]
[[!template text="There's a lot of information here," start="00:00:33.200" video="mainVideo" id=subtitle]]
[[!template text="so let me organize them" start="00:00:34.719" video="mainVideo" id=subtitle]]
[[!template text="in a more visual way." start="00:00:36.160" video="mainVideo" id=subtitle]]
[[!template text="This is our file in Lua." start="00:00:40.480" video="mainVideo" id=subtitle]]
[[!template text="Lua sees this thing" start="00:00:42.960" video="mainVideo" id=subtitle]]
[[!template text="as a multi-line comment," start="00:00:44.559" video="mainVideo" id=subtitle]]
[[!template text="but we are going to see it" start="00:00:46.160" video="mainVideo" id=subtitle]]
[[!template text="as a test block." start="00:00:47.520" video="mainVideo" id=subtitle]]
[[!template text="And eev mode is active," start="00:00:48.879" video="mainVideo" id=subtitle]]
[[!template text="so <f8> does the right thing." start="00:00:50.879" video="mainVideo" id=subtitle]]
[[!template text="These three lines here" start="00:00:54.480" video="mainVideo" id=subtitle]]
[[!template text="set up the target buffer" start="00:00:56.800" video="mainVideo" id=subtitle]]
[[!template text="running a Lua REPL." start="00:00:58.320" video="mainVideo" id=subtitle]]
[[!template text="You can see the the prompt" start="00:01:00.000" video="mainVideo" id=subtitle]]
[[!template text="of the REPL here," start="00:01:02.079" video="mainVideo" id=subtitle]]
[[!template text="and these lines here" start="00:01:03.520" video="mainVideo" id=subtitle]]
[[!template text="are sent to the REPL." start="00:01:04.640" video="mainVideo" id=subtitle]]
[[!template text="When we type <f8>" start="00:01:07.200" video="mainVideo" id=subtitle]]
[[!template text="on a line that starts" start="00:01:08.960" video="mainVideo" id=subtitle]]
[[!template text="with a red star," start="00:01:10.720" video="mainVideo" id=subtitle]]
[[!template text="like these lines here," start="00:01:11.680" video="mainVideo" id=subtitle]]
[[!template text="what <f8> does is that" start="00:01:13.600" video="mainVideo" id=subtitle]]
[[!template text="it sends the rest of the line--" start="00:01:15.119" video="mainVideo" id=subtitle]]
[[!template text="sorry, it executes" start="00:01:17.537" video="mainVideo" id=subtitle]]
[[!template text="the rest of the line as Lisp." start="00:01:18.880" video="mainVideo" id=subtitle]]
[[!template text="So the three <f8>s here" start="00:01:21.119" video="mainVideo" id=subtitle]]
[[!template text="executes these lines as Lisp," start="00:01:23.920" video="mainVideo" id=subtitle]]
[[!template text="and they set up the target buffer here." start="00:01:26.000" video="mainVideo" id=subtitle]]
[[!template text="When we type <f8>" start="00:01:29.520" video="mainVideo" id=subtitle]]
[[!template text="on a line that does not start" start="00:01:31.119" video="mainVideo" id=subtitle]]
[[!template text="with a red star," start="00:01:32.720" video="mainVideo" id=subtitle]]
[[!template text="the <f8> sends the line" start="00:01:34.159" video="mainVideo" id=subtitle]]
[[!template text="to the target buffer and moves down." start="00:01:35.680" video="mainVideo" id=subtitle]]
[[!template text="This line loads this file" start="00:01:38.799" video="mainVideo" id=subtitle]]
[[!template text="in the REPL, and these lines are tests." start="00:01:40.619" video="mainVideo" id=subtitle]]
[[!template text="So we just saw how to use" start="00:01:45.200" video="mainVideo" id=subtitle]]
[[!template text="an existing test block;" start="00:01:46.799" video="mainVideo" id=subtitle]]
[[!template text="let's now see how to create" start="00:01:48.240" video="mainVideo" id=subtitle]]
[[!template text="a new test block." start="00:01:49.840" video="mainVideo" id=subtitle]]
[[!template text="We just have to run this:" start="00:01:51.280" video="mainVideo" id=subtitle]]
[[!template text="M-x ee-insert-test-block -" start="00:01:52.640" video="mainVideo" id=subtitle]]
[[!template text="or M-x eeit." start="00:01:55.680" video="mainVideo" id=subtitle]]
[[!template text="The result depends on the major mode." start="00:01:58.079" video="mainVideo" id=subtitle]]
[[!template text="Let's understand that" start="00:02:01.439" video="mainVideo" id=subtitle]]
[[!template text="by looking at the source code." start="00:02:03.920" video="mainVideo" id=subtitle]]
[[!template text="eeit is an alias to this function here," start="00:02:06.079" video="mainVideo" id=subtitle]]
[[!template text="and this function is just" start="00:02:08.720" video="mainVideo" id=subtitle]]
[[!template text="five lines of code plus a docstring..." start="00:02:09.920" video="mainVideo" id=subtitle]]
[[!template text="and the docstring explains" start="00:02:12.800" video="mainVideo" id=subtitle]]
[[!template text="that if the major mode is foo-mode," start="00:02:14.160" video="mainVideo" id=subtitle]]
[[!template text="then this function tries to call" start="00:02:15.920" video="mainVideo" id=subtitle]]
[[!template text="a function called ee-insert-test-foo-mode" start="00:02:18.800" video="mainVideo" id=subtitle]]
[[!template text="if that function exists," start="00:02:21.360" video="mainVideo" id=subtitle]]
[[!template text="and that, if that function does not exist," start="00:02:24.800" video="mainVideo" id=subtitle]]
[[!template text="then it yields an error." start="00:02:27.280" video="mainVideo" id=subtitle]]
[[!template text="And here's an example" start="00:02:29.680" video="mainVideo" id=subtitle]]
[[!template text="of one such function." start="00:02:31.120" video="mainVideo" id=subtitle]]
[[!template text="That's a function that inserts" start="00:02:32.560" video="mainVideo" id=subtitle]]
[[!template text="a test block in haskell-mode." start="00:02:34.800" video="mainVideo" id=subtitle]]
[[!template text="Here we can see two functions like this:" start="00:02:37.280" video="mainVideo" id=subtitle]]
[[!template text="one for haskell-mode and one for js-mode." start="00:02:40.959" video="mainVideo" id=subtitle]]
[[!template text="These functions look quite similar," start="00:02:46.080" video="mainVideo" id=subtitle]]
[[!template text="but their effects look quite different." start="00:02:48.560" video="mainVideo" id=subtitle]]
[[!template text="To make this comparison here," start="00:02:52.720" video="mainVideo" id=subtitle]]
[[!template text="I started by writing--" start="00:02:54.800" video="mainVideo" id=subtitle]]
[[!template text="by creating seven files," start="00:02:57.280" video="mainVideo" id=subtitle]]
[[!template text="each one in a different language." start="00:02:59.040" video="mainVideo" id=subtitle]]
[[!template text="Initially, each one of these files" start="00:03:01.120" video="mainVideo" id=subtitle]]
[[!template text="only had a comment" start="00:03:03.040" video="mainVideo" id=subtitle]]
[[!template text="with the name of the language..." start="00:03:04.159" video="mainVideo" id=subtitle]]
[[!template text="so: C, Haskell, Javascript, Org Mode, etc." start="00:03:06.403" video="mainVideo" id=subtitle]]
[[!template text="In each one of these files," start="00:03:10.560" video="mainVideo" id=subtitle]]
[[!template text="I typed M-x eeit to insert a test block." start="00:03:12.560" video="mainVideo" id=subtitle]]
[[!template text="So here we can see that" start="00:03:16.959" video="mainVideo" id=subtitle]]
[[!template text="these test blocks are different." start="00:03:18.319" video="mainVideo" id=subtitle]]
[[!template text="For example, the syntax" start="00:03:20.319" video="mainVideo" id=subtitle]]
[[!template text="for multi-line comments" start="00:03:21.440" video="mainVideo" id=subtitle]]
[[!template text="is different depending on the language." start="00:03:22.560" video="mainVideo" id=subtitle]]
[[!template text="This block here that selects" start="00:03:25.200" video="mainVideo" id=subtitle]]
[[!template text="which REPL to run is also different," start="00:03:27.440" video="mainVideo" id=subtitle]]
[[!template text="and this line here that tells the REPL" start="00:03:30.100" video="mainVideo" id=subtitle]]
[[!template text="to load the current file" start="00:03:34.080" video="mainVideo" id=subtitle]]
[[!template text="is also different," start="00:03:36.000" video="mainVideo" id=subtitle]]
[[!template text="depending on the language." start="00:03:37.680" video="mainVideo" id=subtitle]]
[[!template text="In some cases, I had to improvise a bit." start="00:03:39.680" video="mainVideo" id=subtitle]]
[[!template text="For example, to implement test blocks" start="00:03:41.840" video="mainVideo" id=subtitle]]
[[!template text="in shell mode, I had to use" start="00:03:45.360" video="mainVideo" id=subtitle]]
[[!template text="this weird syntax using a here-document." start="00:03:48.560" video="mainVideo" id=subtitle]]
[[!template text="In Tcl, I also had to improvise a bit," start="00:03:52.560" video="mainVideo" id=subtitle]]
[[!template text="and in some cases," start="00:03:55.040" video="mainVideo" id=subtitle]]
[[!template text="I had to improvise a lot." start="00:03:55.920" video="mainVideo" id=subtitle]]
[[!template text="For example, in Org Mode," start="00:03:57.840" video="mainVideo" id=subtitle]]
[[!template text="there isn't an obvious REPL to run," start="00:04:00.159" video="mainVideo" id=subtitle]]
[[!template text="and there isn't an obvious way" start="00:04:02.400" video="mainVideo" id=subtitle]]
[[!template text="to load the the current Org file" start="00:04:03.840" video="mainVideo" id=subtitle]]
[[!template text="into the REPL, so the default action" start="00:04:06.480" video="mainVideo" id=subtitle]]
[[!template text="of M-x eeit in Org Mode" start="00:04:09.360" video="mainVideo" id=subtitle]]
[[!template text="is just to insert this thing here," start="00:04:12.560" video="mainVideo" id=subtitle]]
[[!template text="that we can use to run a shell in a REPL." start="00:04:15.439" video="mainVideo" id=subtitle]]
[[!template text="So these functions are quite similar." start="00:04:22.320" video="mainVideo" id=subtitle]]
[[!template text="In the beginning," start="00:04:25.280" video="mainVideo" id=subtitle]]
[[!template text="I was writing all of them by hand..." start="00:04:26.240" video="mainVideo" id=subtitle]]
[[!template text="but then I got bored" start="00:04:27.919" video="mainVideo" id=subtitle]]
[[!template text="and I wrote a function" start="00:04:29.120" video="mainVideo" id=subtitle]]
[[!template text="to help me write functions like that." start="00:04:30.160" video="mainVideo" id=subtitle]]
[[!template text="This function is called find-eeit-links," start="00:04:33.840" video="mainVideo" id=subtitle]]
[[!template text="and it creates a temporary buffer," start="00:04:37.280" video="mainVideo" id=subtitle]]
[[!template text="and the contents of this temporary buffer" start="00:04:39.919" video="mainVideo" id=subtitle]]
[[!template text="depends on the major mode. For example," start="00:04:42.080" video="mainVideo" id=subtitle]]
[[!template text="if the current mode is python-mode," start="00:04:44.320" video="mainVideo" id=subtitle]]
[[!template text="then running this function here" start="00:04:45.680" video="mainVideo" id=subtitle]]
[[!template text="creates a temporary buffer" start="00:04:48.880" video="mainVideo" id=subtitle]]
[[!template text="that lets me write the support" start="00:04:50.160" video="mainVideo" id=subtitle]]
[[!template text="for test blocks in python-mode," start="00:04:53.120" video="mainVideo" id=subtitle]]
[[!template text="or rewrite the function" start="00:04:55.440" video="mainVideo" id=subtitle]]
[[!template text="that supports test blocks" start="00:04:57.440" video="mainVideo" id=subtitle]]
[[!template text="in python-mode." start="00:04:59.040" video="mainVideo" id=subtitle]]
[[!template text="So if I'm in python-mode and I run this," start="00:05:00.880" video="mainVideo" id=subtitle]]
[[!template text="I get a temporary buffer like this," start="00:05:03.600" video="mainVideo" id=subtitle]]
[[!template text="in which this thing is my template" start="00:05:06.639" video="mainVideo" id=subtitle]]
[[!template text="for the function. Usually, this string" start="00:05:08.639" video="mainVideo" id=subtitle]]
[[!template text="is totally wrong," start="00:05:11.039" video="mainVideo" id=subtitle]]
[[!template text="I have to rewrite this string," start="00:05:11.919" video="mainVideo" id=subtitle]]
[[!template text="but the rest is right." start="00:05:13.919" video="mainVideo" id=subtitle]]
[[!template text="You can see python-mode here" start="00:05:14.960" video="mainVideo" id=subtitle]]
[[!template text="in the name of the function." start="00:05:16.960" video="mainVideo" id=subtitle]]
[[!template text="So we have to edit this" start="00:05:18.479" video="mainVideo" id=subtitle]]
[[!template text="and save that to our ~/.emacs." start="00:05:20.080" video="mainVideo" id=subtitle]]
[[!template text="By the way, these things here" start="00:05:22.840" video="mainVideo" id=subtitle]]
[[!template text="hyperlinks to many different things..." start="00:05:26.080" video="mainVideo" id=subtitle]]
[[!template text="This Elisp hyperlink here" start="00:05:28.880" video="mainVideo" id=subtitle]]
[[!template text="points to the source code," start="00:05:31.600" video="mainVideo" id=subtitle]]
[[!template text="to the section in which these functions" start="00:05:32.880" video="mainVideo" id=subtitle]]
[[!template text="are defined. So you can see this here," start="00:05:36.880" video="mainVideo" id=subtitle]]
[[!template text="the function that supports C," start="00:05:39.919" video="mainVideo" id=subtitle]]
[[!template text="the function for Haskell," start="00:05:41.759" video="mainVideo" id=subtitle]]
[[!template text="the function for Javascript, etc..." start="00:05:42.800" video="mainVideo" id=subtitle]]
[[!template text="and that's it!" start="00:05:46.400" video="mainVideo" id=subtitle]]
[[!template text="This is a five-minute talk," start="00:05:47.520" video="mainVideo" id=subtitle]]
[[!template text="so I can't say much..." start="00:05:49.440" video="mainVideo" id=subtitle]]
[[!template text="If you want more information," start="00:05:50.960" video="mainVideo" id=subtitle]]
[[!template text="or if you want to see real-world examples," start="00:05:52.320" video="mainVideo" id=subtitle]]
[[!template text="how I use test blocks, etc. etc.," start="00:05:54.800" video="mainVideo" id=subtitle]]
[[!template text="see this page here..." start="00:05:57.280" video="mainVideo" id=subtitle]]
[[!template text="and I do not have time to explain this" start="00:05:58.639" video="mainVideo" id=subtitle]]
[[!template text=""By the way" here." start="00:06:01.253" video="mainVideo" id=subtitle]]
[[!template text="So that's it! Thanks! =)" start="00:06:02.560" video="mainVideo" id=subtitle]]
[[!template text="captions by Eduardo Ochs" start="00:06:03.333" video="mainVideo" id=subtitle]]
