add Travis configuration

3 files changed, 53 insertions, 1 deletions

diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..5147012
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,7 @@
+language: python
+python:
+  - '3.4'
+  - '3.5'
+  - '3.6'
+  - '3.7'
+script: ./.travis/plot.sh
diff --git a/.travis/plot.sh b/.travis/plot.sh
new file mode 100755
index 0000000..091abab
--- /dev/null
+++ b/.travis/plot.sh
@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2019 Egor Tensin <Egor.Tensin@gmail.com>                        
+# This file is part of the "Sorting algorithms" project.                                
+# For details, see https://github.com/egor-tensin/sorting-algorithms.                   
+# Distributed under the MIT License.
+
+set -o errexit -o nounset -o pipefail
+
+script_dir="$( dirname -- "${BASH_SOURCE[0]}" )"
+script_dir="$( cd -- "$script_dir" && pwd )"
+readonly script_dir
+
+declare -a algorithm_list=(
+    bubble_sort
+    bubble_sort_optimized
+    heapsort
+    insertion_sort
+    merge_sort
+    quicksort_first
+    quicksort_last
+    quicksort_middle
+    quicksort_random
+    quicksort_second
+    selection_sort
+)
+
+fix_matplotlib() {
+    # Get rid of:
+    # tkinter.TclError: no display name and no $DISPLAY environment variable
+    mkdir -p -- ~/.config/matplotlib
+    echo 'backend: Agg' > ~/.config/matplotlib/matplotlibrc
+}
+
+main() {
+    fix_matplotlib
+
+    local algorithm
+    for algorithm in ${algorithm_list[@]+"${algorithm_list[@]}"}; do
+        echo "Plotting algorithm $algorithm..."
+        "$script_dir/../plot.sh" "$algorithm"
+    done
+}
+
+main "$@"
diff --git a/plot.sh b/plot.sh
index 691bc01..efdd42f 100755
--- a/plot.sh
+++ b/plot.sh
@@ -33,7 +33,7 @@ main() {
 
     local input_kind
     for input_kind in best average worst; do
-        local output_path="${algorithm}_${iterations}_${input_kind}_${min}_${max}.png"
+        local output_path="$script_dir/${algorithm}_${iterations}_${input_kind}_${min}_${max}.png"
         python3 "$script_dir/plot.py"  \
             "$algorithm"               \
             --input "$input_kind"      \