Build vttest, improve runner

test/Dockerfile

@@ -1,3 +1,20 @@
+#--------------------------------------------------------------------
+# vttest
+#--------------------------------------------------------------------
+FROM alpine:3.16 AS vttest
+
+RUN apk add --no-cache build-base curl
+
+RUN curl -o vttest.tar.gz https://invisible-island.net/archives/vttest/vttest-20220215.tgz && \
+    tar xvzf vttest.tar.gz && \
+    cd vttest-20220215 && \
+    ./configure && \
+    make && \
+    cp ./vttest /
+
+#--------------------------------------------------------------------
+# main runner
+#--------------------------------------------------------------------
 FROM alpine:3.16
 
 # Base packages. A good set of this is just to get X (xvfb) and OpenGL
@@ -6,6 +23,8 @@ RUN apk add --no-cache \
     bash \
     grep \
     procps \
+    font-inconsolata-nerd \
+    i3wm \
     imagemagick \
     libxrandr \
     mesa-dev \
@@ -19,7 +38,8 @@ RUN apk add --no-cache \
 RUN apk add --no-cache \
     alacritty
 
-COPY ./run.sh /run.sh
-COPY ./colors.sh /colors.sh
+COPY --from=vttest /vttest /usr/bin/vttest
 
-ENTRYPOINT ["/bin/bash"]
+COPY ./run.sh /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

test/cases/vttest/1_1.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+function test_do {
+  xdotool type "vttest"
+  xdotool key Return
+}

test/colors.sh

@@ -1,96 +0,0 @@
-#!/usr/bin/env bash
-
-# Tom Hale, 2016. MIT Licence.
-# Print out 256 colours, with each number printed in its corresponding colour
-# See http://askubuntu.com/questions/821157/print-a-256-color-test-pattern-in-the-terminal/821163#821163
-
-set -eu # Fail on errors or undeclared variables
-
-printable_colours=256
-
-# Return a colour that contrasts with the given colour
-# Bash only does integer division, so keep it integral
-function contrast_colour {
-    local r g b luminance
-    colour="$1"
-
-    if (( colour < 16 )); then # Initial 16 ANSI colours
-        (( colour == 0 )) && printf "15" || printf "0"
-        return
-    fi
-
-    # Greyscale # rgb_R = rgb_G = rgb_B = (number - 232) * 10 + 8
-    if (( colour > 231 )); then # Greyscale ramp
-        (( colour < 244 )) && printf "15" || printf "0"
-        return
-    fi
-
-    # All other colours:
-    # 6x6x6 colour cube = 16 + 36*R + 6*G + B  # Where RGB are [0..5]
-    # See http://stackoverflow.com/a/27165165/5353461
-
-    # r=$(( (colour-16) / 36 ))
-    g=$(( ((colour-16) % 36) / 6 ))
-    # b=$(( (colour-16) % 6 ))
-
-    # If luminance is bright, print number in black, white otherwise.
-    # Green contributes 587/1000 to human perceived luminance - ITU R-REC-BT.601
-    (( g > 2)) && printf "0" || printf "15"
-    return
-
-    # Uncomment the below for more precise luminance calculations
-
-    # # Calculate percieved brightness
-    # # See https://www.w3.org/TR/AERT#color-contrast
-    # # and http://www.itu.int/rec/R-REC-BT.601
-    # # Luminance is in range 0..5000 as each value is 0..5
-    # luminance=$(( (r * 299) + (g * 587) + (b * 114) ))
-    # (( $luminance > 2500 )) && printf "0" || printf "15"
-}
-
-# Print a coloured block with the number of that colour
-function print_colour {
-    local colour="$1" contrast
-    contrast=$(contrast_colour "$1")
-    printf "\e[48;5;%sm" "$colour"                # Start block of colour
-    printf "\e[38;5;%sm%3d" "$contrast" "$colour" # In contrast, print number
-    printf "\e[0m "                               # Reset colour
-}
-
-# Starting at $1, print a run of $2 colours
-function print_run {
-    local i
-    for (( i = "$1"; i < "$1" + "$2" && i < printable_colours; i++ )) do
-        print_colour "$i"
-    done
-    printf "  "
-}
-
-# Print blocks of colours
-function print_blocks {
-    local start="$1" i
-    local end="$2" # inclusive
-    local block_cols="$3"
-    local block_rows="$4"
-    local blocks_per_line="$5"
-    local block_length=$((block_cols * block_rows))
-
-    # Print sets of blocks
-    for (( i = start; i <= end; i += (blocks_per_line-1) * block_length )) do
-        printf "\n" # Space before each set of blocks
-        # For each block row
-        for (( row = 0; row < block_rows; row++ )) do
-            # Print block columns for all blocks on the line
-            for (( block = 0; block < blocks_per_line; block++ )) do
-                print_run $(( i + (block * block_length) )) "$block_cols"
-            done
-            (( i += block_cols )) # Prepare to print the next row
-            printf "\n"
-        done
-    done
-}
-
-print_run 0 16 # The first 16 colours are spread over the whole spectrum
-printf "\n"
-print_blocks 16 231 6 6 3 # 6x6x6 colour cube between 16 and 231 inclusive
-print_blocks 232 255 12 2 1 # Not 50, but 24 Shades of Grey

test/run.sh

@@ -1,7 +1,52 @@
 #!/usr/bin/env bash
+#
+# This script runs a given test case and captures a screenshot. This script
+# expects to run in the Docker image so it just captures the full screen rather
+# than a specific window.
+#
+# This outputs the captured image to the `--output` value. This will not
+# compare the captured output. This is only used to capture the output of
+# a test case.
 
-# The child program to execute
-CHILD="alacritty"
+#--------------------------------------------------------------------
+# Helpers
+
+function has_func() {
+    declare -f -F $1 > /dev/null
+    return $?
+}
+
+#--------------------------------------------------------------------
+# Flag parsing
+
+while [[ "$#" -gt 0 ]]; do
+    case $1 in
+        -e|--exec) ARG_EXEC="$2"; shift ;;
+        -c|--case) ARG_CASE="$2"; shift ;;
+        -o|--output) ARG_OUT="$2"; shift ;;
+        *) echo "Unknown parameter passed: $1"; exit 1 ;;
+    esac
+    shift
+done
+
+bad=0
+if [ -z "$ARG_EXEC" ]; then bad=1; fi
+if [ -z "$ARG_CASE" ]; then bad=1; fi
+if [ -z "$ARG_OUT" ]; then bad=1; fi
+if [ $bad -ne 0 ]; then
+  echo "Usage: run.sh --exec <terminal> --case <path to case> --output <path to png>"
+  exit 1
+fi
+
+# Load our test case
+source ${ARG_CASE}
+if ! has_func "test_do"; then
+  echo "Test case is invalid."
+  exit 1
+fi
+
+echo "Term: ${ARG_EXEC}"
+echo "Case: ${ARG_CASE}"
 
 #--------------------------------------------------------------------
 # Some terminals require XDG be properly setup. We create a new
@@ -11,20 +56,34 @@ export XDG_RUNTIME_DIR="${XDG_BASE_DIR}/runtime"
 mkdir -p ${XDG_BASE_DIR} ${XDG_RUNTIME_DIR}
 chmod 0700 $XDG_RUNTIME_DIR
 
+# Configure i3
+cat <<EOF >${XDG_BASE_DIR}/i3.cfg
+exec ${ARG_EXEC}
+EOF
+
 #--------------------------------------------------------------------
 
-# Start up the program under test
-CHILD_LOG="${XDG_BASE_DIR}/child.log"
-${CHILD} -o "window.start_maximized=true" >${CHILD_LOG} 2>&1 &
-CHILD_PID=$!
-echo "Child pid: ${CHILD_PID}"
-echo "Child log: ${CHILD_LOG}"
+# Start up the program under test by launching i3. We use i3 so we can
+# more carefully control the window settings, test resizing, etc.
+WM_LOG="${XDG_BASE_DIR}/wm.log"
+i3 -c ${XDG_BASE_DIR}/i3.cfg >${WM_LOG} 2>&1 &
 
+echo
+echo "Started window manager..."
+
+# Wait for startup
+# TODO: we can probably use xdotool or wmctrl or something to detect if any
+# windows actually launched and make error handling here better.
 sleep 2
 
-xdotool type "/colors.sh"
-xdotool key Return
+# Run our test case (should be defined in test case file)
+echo "Executing test case..."
+test_do
 
+# Sleep a second to let it render
 sleep 1
 
-import -window root /src/screen.jpeg
+echo "Capturing screen shot..."
+import -window root ${ARG_OUT}
+
+echo "Done"