Add a test script for reading from boot.properties

Author: martinklepsch

script/head-test.sh

@@ -0,0 +1,140 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+unset BOOT_JAVA_COMMAND
+unset BOOT_JVM_OPTIONS
+
+# Variables ---------------------------------------------------------
+
+global_opt="--option-from-global-boot-properties"
+global_cmd="java-global"
+local_opt="--option-from-local-boot-properties"
+local_cmd="java-local"
+env_opt="--env-option"
+env_cmd="java-env"
+
+headsh="$(pwd)/src/head.sh"
+dir="$(mktemp -q -d)"
+
+error=""
+
+# Setup -------------------------------------------------------------
+
+mkdir "$dir/.boot"
+export BOOT_HOME="$dir/.boot"
+
+pushd "$dir" > /dev/null
+
+echo "Testing in directory $dir"
+# echo "BOOT_HOME = $BOOT_HOME\n"
+
+# Prepare modified version of `head.sh` 
+# that just prints java command and options
+
+sed '$ d' "$headsh" > "$dir/head.sh"
+echo 'echo "$java_command" "${options[@]-}"' >> "$dir/head.sh"
+chmod +x "$dir/head.sh"
+
+# Helpers -----------------------------------------------------------
+
+test_head_sh () {
+    out="$("$dir/head.sh")"
+    if [ "$out" == "$1" ]; then
+        echo "✅  $out"
+    else
+        echo "   EXPECTED: $1"
+        echo "🛑  WAS:      $out"
+        error="yes"
+        # exit 1
+    fi
+}
+
+write_global () { 
+    printf "BOOT_JAVA_COMMAND=$global_cmd\nBOOT_JVM_OPTIONS=$global_opt\n" > "$BOOT_HOME/boot.properties" 
+}
+clean_global () { 
+    rm "$dir/.boot/boot.properties" 
+}
+write_local () { 
+    # missing newline at the end here is no mistake :)
+    printf "BOOT_JAVA_COMMAND=$local_cmd\nBOOT_JVM_OPTIONS=$local_opt" > "$dir/boot.properties" 
+}
+clean_local () { 
+    rm "$dir/boot.properties" 
+}
+set_env () {
+    export BOOT_JAVA_COMMAND=$env_cmd
+    export BOOT_JVM_OPTIONS=$env_opt
+}
+clean_env () {
+    unset BOOT_JAVA_COMMAND
+    unset BOOT_JVM_OPTIONS
+}
+
+# Test setting of global options ------------------------------------
+
+printf "\nTesting \$BOOT_HOME/boot.properties\n"
+
+write_global
+test_head_sh "$global_cmd $global_opt"
+clean_global
+
+# Test setting of local options -------------------------------------
+
+printf "\nTesting ./boot.properties\n"
+
+write_local
+test_head_sh "$local_cmd $local_opt"
+clean_local
+
+# Test local > global precedence ------------------------------------
+
+printf "\nTesting local > global precedence\n"
+
+write_global
+write_local
+test_head_sh "$local_cmd $local_opt"
+clean_global
+clean_local
+
+# Test env > local > global precedence ------------------------------
+
+printf "\nTesting env > local > global precedence\n"
+
+write_global
+write_local
+set_env
+test_head_sh "$env_cmd $env_opt"
+clean_global
+clean_local
+clean_env
+
+# Test mixing of env & local ----------------------------------------
+
+printf "\nTesting mixing of env & local\n"
+
+printf "BOOT_JAVA_COMMAND=$local_cmd\n" > "$dir/boot.properties" 
+export BOOT_JVM_OPTIONS=$env_opt
+test_head_sh "$local_cmd $env_opt"
+clean_local
+clean_env
+
+# Test mixing of local & global -------------------------------------
+
+printf "\nTesting mixing of local & global\n"
+
+printf "BOOT_JAVA_COMMAND=$local_cmd\n" > "$dir/boot.properties" 
+printf "BOOT_JVM_OPTIONS=$global_opt\n" > "$BOOT_HOME/boot.properties" 
+test_head_sh "$local_cmd $global_opt"
+clean_local
+clean_global
+
+popd "$dir" > /dev/null
+
+if [ "$error" == "yes" ]; then
+    printf "\nSome errors occurred. 🛑\n"
+    exit 1
+else
+    rm -rf "$dir"
+fi