c2go_test.go

package main

import (
	"bytes"
	"os/exec"
	"path/filepath"
	"testing"
)

var testcases = []struct {
	Name   string
	Args   []string
	Output []byte
}{
	{
		Name: "binarytrees",
		Args: []string{"10"},
		Output: []byte(`stretch tree of depth 11	 check: 4095
1024	 trees of depth 4	 check: 31744
256	 trees of depth 6	 check: 32512
64	 trees of depth 8	 check: 32704
16	 trees of depth 10	 check: 32752
long lived tree of depth 10	 check: 2047
`),
	},
	{
		Name: "fannkuchredux",
		Args: []string{"9"},
		Output: []byte(`8629
Pfannkuchen(9) = 30
`),
	},
	{
		Name: "nbody",
		Args: []string{"10000"},
		Output: []byte(`-0.169075164
-0.169016441
`),
	},
	{
		Name:   "struct_copy",
		Output: []byte("/usr/home 1\n"),
	},
	{
		Name:   "macro",
		Output: []byte("16\n"),
	},
	{
		Name: "variadic-macro",
		Output: []byte(`Something is wrong
Error #435
`),
	},
	{
		Name:   "statement_macro",
		Output: []byte("-5\n"),
	},
}

func TestOutput(t *testing.T) {
	for _, c := range testcases {
		dir := t.TempDir()
		C2Go([]string{filepath.Join("testdata", c.Name+".c")}, options{
			cfgFile: filepath.Join("testdata", c.Name+".cfg"),
			dst:     dir,
		})

		args := []string{"run", filepath.Join(dir, "main", c.Name+".go")}
		args = append(args, c.Args...)
		cmd := exec.Command("go", args...)
		got, err := cmd.CombinedOutput()
		if err != nil {
			t.Fatalf("error running Go program for %s: %v\n%s", c.Name, err, got)
		}
		if !bytes.Equal(got, c.Output) {
			t.Fatalf("unexpected output from %s: got %q, want %q", c.Name, got, c.Output)
		}
	}
}