Migrate testing to tcltest + expect

test/all.tcl

@@ -0,0 +1,18 @@
+package require tcltest 2
+namespace import -force ::tcltest::*
+configure {*}$argv -testdir [file dir [info script]]
+
+# Hook to determine if any of the tests failed. Then we can exit with
+# proper exit code: 0=all passed, 1=one or more failed
+proc tcltest::cleanupTestsHook {} {
+	variable numTests
+	upvar 2 testFileFailures crashed
+	set ::exitCode [expr {$numTests(Failed) > 0}]
+	if {[info exists crashed]} {
+		set ::exitCode [expr {$::exitCode || [llength $crashed]}]
+	}
+}
+
+runAllTests
+puts "\a"
+exit $exitCode