package ph7_test

import (
	"testing"

	ph7 "git.codemonkeysoftware.net/b/go-ph7"
)

func mustSucceed(t *testing.T, err error) {
	t.Helper()
	if err != nil {
		t.Fatal(err.Error())
	}
}

func mustFail(t *testing.T, err error) {
	t.Helper()
	if err == nil {
		t.Fatal("expected error, got nil")
	}
}

func mustSucceedF(t *testing.T, f func() error) {
	t.Helper()
	err := f()
	if err != nil {
		t.Fatal(err.Error())
	}
}

func TestHelloWorld(t *testing.T) {
	engine, err := ph7.NewEngine()
	mustSucceed(t, err)
	defer mustSucceedF(t, engine.Close)

	vm, err := engine.Compile([]byte("<?php echo 'Hello world!'; ?>"), false)
	mustSucceed(t, err)
	defer mustSucceedF(t, vm.Close)

	mustSucceed(t, vm.Exec())

	output, err := vm.ExtractOutput()
	mustSucceed(t, err)
	if output != "Hello world!" {
		t.Fatalf("unexpected output: %s", output)
	}
}

func TestCompileError(t *testing.T) {
	engine, err := ph7.NewEngine()
	mustSucceed(t, err)
	defer mustSucceedF(t, engine.Close)

	_, err = engine.Compile([]byte("<?php 1234 echo 'Hello world!'; ?>"), false)
	mustFail(t, err)
	msg, err := engine.ErrLog()
	mustSucceed(t, err)
	if msg == "" {
		t.Fatalf("expected error message, got nothing")
	}
}