Add a test framework and some really simple tests

tests/Child.hs

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+module Child where
+
+import Parent
+
+child :: String
+child = "child of " ++ parent

tests/Parent.hs

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+module Parent where
+
+parent :: String
+parent = "parent"

tests/SampleError.hs

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+-- Sample Module used for testing
+
+-- This module should cause a compilation error:
+--
+-- Sample2.hs:9:1: parse error (possibly incorrect indentation)
+
+module SampleError where
+
+a = foo

tests/Simple.hs

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+-- Sample Module used for testing
+
+-- This module contains no errors or warnings
+module Sample1 where
+
+increment :: Int -> Int
+increment x = x + 1

tests/test_module_file.sh

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+#!/bin/sh
+
+set -e
+
+SOCK=`mktemp -u`
+
+$HDEVTOOLS check --socket=$SOCK Child.hs
+
+PARENT=`$HDEVTOOLS modulefile --socket=$SOCK Parent`
+
+[ "$PARENT" = "./Parent.hs" ]
+
+$HDEVTOOLS --socket=$SOCK --stop-server

tests/test_runner.sh

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+#!/bin/sh
+
+set -e
+
+ALL_TESTS="\
+	test_start_stop.sh \
+	test_simple_check.sh \
+	test_sample_error.sh \
+	test_module_file.sh \
+	"
+
+if [ ! $HDEVTOOLS ]
+then
+	echo 'You must set the HDEVTOOLS environment variable to the path of the hdevtools binary'
+	exit 1
+fi
+
+case "$HDEVTOOLS" in
+	*/*)
+		# Convert relative path to absolute:
+		export HDEVTOOLS=`pwd`/$HDEVTOOLS
+esac
+
+echo $HDEVTOOLS
+
+if [ $# -ne 0 ]
+then
+	TESTS=$*
+else
+	TESTS=$ALL_TESTS
+	echo 'Running All Tests'
+fi
+
+echo '------------------------------------------------------------------------'
+
+cd `dirname $0`
+
+ERRORS=0
+for i in $TESTS
+do
+	echo $i
+	echo
+	if sh $i
+	then
+		echo 'Test OK'
+	else
+		echo 'Test FAILED'
+		ERRORS=`expr $ERRORS + 1`
+	fi
+	echo '------------------------------------------------------------------------'
+done
+
+if [ $ERRORS = 0 ]
+then
+	echo 'All Tests OK'
+else
+	echo $ERRORS 'FAILED Tests'
+fi
+exit $ERRORS

tests/test_sample_error.sh

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+#!/bin/sh
+
+set -e
+
+SOCK=`mktemp -u`
+
+EXPECTED_ERRORS='SampleError.hs:9:5: Not in scope: `foo'\'''
+
+if ERRORS=`$HDEVTOOLS check --socket=$SOCK SampleError.hs`
+then
+	false
+elsh
+	[ "$ERRORS" = "$EXPECTED_ERRORS" ]
+fi
+
+$HDEVTOOLS --socket=$SOCK --stop-server

tests/test_simple_check.sh

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+#!/bin/sh
+
+set -e
+
+SOCK=`mktemp -u`
+
+ERRORS=`$HDEVTOOLS check --socket=$SOCK Simple.hs`
+
+[ -z "$ERRORS" ]
+
+$HDEVTOOLS --socket=$SOCK --stop-server

tests/test_start_stop.sh

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+#!/bin/sh
+
+set -e
+
+SOCK=`mktemp -u`
+
+echo '> Starting the server'
+$HDEVTOOLS --socket=$SOCK --start-server
+
+echo '> Checking status'
+$HDEVTOOLS --socket=$SOCK --status
+
+echo '> Checking that the socket file exists'
+if [ ! -S $SOCK ]; then false; fi
+
+echo '> Stopping the server'
+$HDEVTOOLS --socket=$SOCK --stop-server
+
+echo '> Checking that the socket file no longer exists'
+if [ -e $SOCK ]; then false; fi