From b0af4e4c8543d8cdfd8bc7cd68b760d9d66e927c Mon Sep 17 00:00:00 2001
From: eplanet <emeric.planet@gmail.com>
Date: Mon, 14 Nov 2016 09:13:44 +0100
Subject: Unit testing in Travis (#170)

---
 .travis.yml                               |  1 +
 i3status.c                                | 40 ++++++++++++++++++++---------
 testcases/001-battery/BAT0_uevent         |  4 +++
 testcases/001-battery/expected_output.txt |  1 +
 testcases/001-battery/i3status.conf       | 10 ++++++++
 travis/run-tests.pl                       | 42 +++++++++++++++++++++++++++++++
 6 files changed, 86 insertions(+), 12 deletions(-)
 create mode 100644 testcases/001-battery/BAT0_uevent
 create mode 100644 testcases/001-battery/expected_output.txt
 create mode 100644 testcases/001-battery/i3status.conf
 create mode 100755 travis/run-tests.pl

diff --git a/.travis.yml b/.travis.yml
index 2f3f93d..fc58769 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,3 +22,4 @@ addons:
 script:
   - make -j
   - clang-format-3.5 -i $(find . -name "*.[ch]" | tr '\n' ' ') && git diff --exit-code || (echo 'Code was not formatted using clang-format!'; false)
+  - ./travis/run-tests.pl
diff --git a/i3status.c b/i3status.c
index 85ada1b..f487612 100644
--- a/i3status.c
+++ b/i3status.c
@@ -63,6 +63,7 @@
 int general_socket;
 
 static bool exit_upon_signal = false;
+static bool run_once = false;
 
 cfg_t *cfg, *cfg_general, *cfg_section;
 
@@ -479,11 +480,12 @@ int main(int argc, char *argv[]) {
         CFG_END()};
 
     char *configfile = NULL;
-    int o, option_index = 0;
+    int opt, option_index = 0;
     struct option long_options[] = {
         {"config", required_argument, 0, 'c'},
         {"help", no_argument, 0, 'h'},
         {"version", no_argument, 0, 'v'},
+        {"run-once", no_argument, 0, 0},
         {0, 0, 0, 0}};
 
     struct sigaction action;
@@ -506,18 +508,28 @@ int main(int argc, char *argv[]) {
     if (setlocale(LC_ALL, "") == NULL)
         die("Could not set locale. Please make sure all your LC_* / LANG settings are correct.");
 
-    while ((o = getopt_long(argc, argv, "c:hv", long_options, &option_index)) != -1)
-        if ((char)o == 'c')
-            configfile = optarg;
-        else if ((char)o == 'h') {
-            printf("i3status " VERSION " © 2008 Michael Stapelberg and contributors\n"
-                   "Syntax: %s [-c <configfile>] [-h] [-v]\n",
-                   argv[0]);
-            return 0;
-        } else if ((char)o == 'v') {
-            printf("i3status " VERSION " © 2008 Michael Stapelberg and contributors\n");
-            return 0;
+    while ((opt = getopt_long(argc, argv, "c:hv", long_options, &option_index)) != -1) {
+        switch (opt) {
+            case 'c':
+                configfile = optarg;
+                break;
+            case 'h':
+                printf("i3status " VERSION " © 2008 Michael Stapelberg and contributors\n"
+                       "Syntax: %s [-c <configfile>] [-h] [-v]\n",
+                       argv[0]);
+                return 0;
+                break;
+            case 'v':
+                printf("i3status " VERSION " © 2008 Michael Stapelberg and contributors\n");
+                return 0;
+                break;
+            case 0:
+                if (strcmp(long_options[option_index].name, "run-once") == 0) {
+                    run_once = true;
+                }
+                break;
         }
+    }
 
     if (configfile == NULL)
         configfile = get_config_path();
@@ -749,6 +761,10 @@ int main(int argc, char *argv[]) {
         printf("\n");
         fflush(stdout);
 
+        if (run_once) {
+            break;
+        }
+
         /* To provide updates on every full second (as good as possible)
          * we don’t use sleep(interval) but we sleep until the next
          * second (with microsecond precision) plus (interval-1)
diff --git a/testcases/001-battery/BAT0_uevent b/testcases/001-battery/BAT0_uevent
new file mode 100644
index 0000000..b994324
--- /dev/null
+++ b/testcases/001-battery/BAT0_uevent
@@ -0,0 +1,4 @@
+POWER_SUPPLY_STATUS=Discharging
+POWER_SUPPLY_CURRENT_NOW=1107000
+POWER_SUPPLY_CHARGE_FULL_DESIGN=7800000
+POWER_SUPPLY_CHARGE_NOW=2390000
diff --git a/testcases/001-battery/expected_output.txt b/testcases/001-battery/expected_output.txt
new file mode 100644
index 0000000..6e1898b
--- /dev/null
+++ b/testcases/001-battery/expected_output.txt
@@ -0,0 +1 @@
+BAT 30.64% 02:09:32
diff --git a/testcases/001-battery/i3status.conf b/testcases/001-battery/i3status.conf
new file mode 100644
index 0000000..b55e768
--- /dev/null
+++ b/testcases/001-battery/i3status.conf
@@ -0,0 +1,10 @@
+general {
+        output_format = "none"
+}
+
+order += "battery all"
+
+battery all {
+        format = "%status %percentage %remaining"
+        path = "testcases/001-battery/BAT%d_uevent"
+}
diff --git a/travis/run-tests.pl b/travis/run-tests.pl
new file mode 100755
index 0000000..453a633
--- /dev/null
+++ b/travis/run-tests.pl
@@ -0,0 +1,42 @@
+#!/usr/bin/env perl
+
+use v5.10;
+use strict;
+use warnings;
+use Term::ANSIColor qw(:constants);
+use File::Basename;
+
+sub TestCase {
+    my ($dir) = @_;
+    my $conf = "$dir/i3status.conf";
+    my $testres = `./i3status --run-once -c $conf`;
+    my $refres = "";
+
+    if ( -f "@_/expected_output.txt") {
+        $refres = `cat "@_/expected_output.txt"`;
+    } elsif ( -f "@_/expected_output.sh") {
+        $refres = `bash @_/expected_output.sh`;
+    }
+
+    if ( "$testres" eq "$refres" ) {
+        say "Testing test case '", basename($dir), "'… ", BOLD, GREEN, "OK", RESET;
+        return 1;
+    } else {
+        say "Testing test case '", basename($dir), "'… ", BOLD, RED, "Failed!", RESET;
+        return 0;
+    }
+}
+
+
+my $testcases = 'testcases';
+my $testresults = 1;
+
+opendir(my $dir, $testcases) or die "Could not open directory $testcases: $!";
+
+while (my $entry = readdir($dir)) {
+    next unless (-d "$testcases/$entry");
+    next if ($entry =~ m/^\./);
+    $testresults = $testresults && TestCase("$testcases/$entry");
+}
+closedir($dir);
+exit 0;
-- 
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