begin to add functional tests

.gitignore

@@ -28,3 +28,4 @@ doc/site/*
 csvtk/csvtk*
 csvtk/binaries*
 doc/site
+*ssshtest

.travis.yml

@@ -0,0 +1,11 @@
+language: go
+
+os:
+  - linux
+  - osx
+
+go:
+  - 1.8
+
+script:
+    - ./testdata/test.sh

testdata/test.sh

@@ -0,0 +1,102 @@
+#!/bin/bash
+
+test -e ssshtest || wget -q https://raw.githubusercontent.com/ryanlayer/ssshtest/master/ssshtest
+
+. ssshtest
+set -e
+
+
+cd csvtk; go build; cd ..;
+app=./csvtk/csvtk
+
+set +e
+
+
+# ----------------------------------------------------------------------------
+# csvtk headers
+# ----------------------------------------------------------------------------
+
+for n in 1 10 100 10000 1000000; do
+    fn() {
+        cat <(seq $n | awk '{print "c"$1}' | paste -sd,) <(seq $n | paste -sd,) \
+            | $app headers
+    }
+    run "headers (n=$n)" fn
+    assert_no_stderr
+    assert_equal $(cat $STDOUT_FILE | grep -v '#' | wc -l) $n
+done
+
+# ----------------------------------------------------------------------------
+# csvtk stats
+# ----------------------------------------------------------------------------
+
+for n in 1 10 100 10000 1000000; do
+    fn() {
+        cat <(seq $n | awk '{print "c"$1}' | paste -sd,) <(seq $n | paste -sd,) \
+            | $app stats
+    }
+    run "stats (n=$n)" fn
+    assert_no_stderr
+    assert_equal $(cat $STDOUT_FILE | $app space2tab | sed 1d | cut -f 2 | sed 's/,//g') $n
+    assert_equal $(cat $STDOUT_FILE | $app space2tab | sed 1d | cut -f 3 | sed 's/,//g') 1
+
+    fn() {
+        cat <(seq $n | awk '{print "c"$1}' | paste -sd,) <(seq $n | paste -sd,) \
+            | $app stats -H
+    }
+    run "stats -H (n=$n)" fn
+    assert_no_stderr
+    assert_equal $(cat $STDOUT_FILE | $app space2tab | sed 1d | cut -f 2 | sed 's/,//g') $n
+    assert_equal $(cat $STDOUT_FILE | $app space2tab | sed 1d | cut -f 3 | sed 's/,//g') 2
+
+    # -----------------------------------------------------------------------
+    # transpose
+    # -----------------------------------------------------------------------
+    fn() {
+        cat <(seq $n | awk '{print "c"$1}' | paste -sd,) <(seq $n | paste -sd,) \
+            | $app transpose \
+            | $app stats
+    }
+    run "transpose & stats (n=$n)" fn
+    assert_no_stderr
+    assert_equal $(cat $STDOUT_FILE | $app space2tab | sed 1d | cut -f 2 | sed 's/,//g') 2
+    assert_equal $(cat $STDOUT_FILE | $app space2tab | sed 1d | cut -f 3 | sed 's/,//g') $(($n -1))
+
+    fn() {
+        cat <(seq $n | awk '{print "c"$1}' | paste -sd,) <(seq $n | paste -sd,) \
+            | $app transpose \
+            | $app stats -H
+    }
+    run "transpose & stats -H (n=$n)" fn
+    assert_no_stderr
+    assert_equal $(cat $STDOUT_FILE | $app space2tab | sed 1d | cut -f 2 | sed 's/,//g') 2
+    assert_equal $(cat $STDOUT_FILE | $app space2tab | sed 1d | cut -f 3 | sed 's/,//g') $n
+done
+
+
+# ----------------------------------------------------------------------------
+# csvtk cut
+# ----------------------------------------------------------------------------
+
+for n in 1 10 100 10000 1000000; do
+    fn() {
+        seq $n | $app cut -H -f 1
+    }
+    run "cut -H -f 1 (n=$n)"  fn
+    assert_no_stderr
+    assert_equal $(cat $STDOUT_FILE | wc -l) $n
+
+    fn() {
+        seq $n | $app cut -H -t -f 1
+    }
+    run "cut -H -t -f 1 (n=$n)"  fn
+    assert_no_stderr
+    assert_equal $(cat $STDOUT_FILE | wc -l) $n
+
+    fn() {
+        cat <(echo head) <(seq $n) | $app cut -f head
+    }
+    run "cut -f head (n=$n)"  fn
+    assert_no_stderr
+    assert_equal $(cat $STDOUT_FILE | wc -l) $(($n+1))
+done