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asserts.go
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asserts.go
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package main
import (
"io/ioutil"
"os"
"testing"
"github.com/andreyvit/diff"
)
func assertFileMissing(t *testing.T, name string) {
t.Helper()
_, err := os.Stat(name)
if err != nil && os.IsNotExist(err) {
return
}
if err == nil {
t.Fatalf("assertFileMissing failed: %v exists", name)
}
t.Fatalf("assertFileMissing: %q: %v", name, err)
}
func assertFileExists(t *testing.T, name string) {
t.Helper()
_, err := os.Stat(name)
if err == nil {
return
}
if os.IsNotExist(err) {
t.Fatalf("assertFileExists failed: %v not exist", name)
}
t.Fatalf("assertFileExists: file can't be accessed: %v: %v", name, err)
}
func assertFileEmpty(t *testing.T, name string) {
t.Helper()
c, err := ioutil.ReadFile(name)
if err != nil {
t.Fatal(err)
}
if len(c) != 0 {
t.Fatalf("got=%v want=%v: %v", len(c), 0, name)
}
}
func assertFileContents(t *testing.T, name string, contents string) {
t.Helper()
c, err := ioutil.ReadFile(name)
if err != nil {
t.Fatal(err)
}
if w, g := contents, string(c); w != g {
t.Errorf("assertFileContents(%q) mismatch (-got +want):\n%s",
name, diff.LineDiff(g, w))
}
}
func assertFilePerms(t *testing.T, name string, perms os.FileMode) {
t.Helper()
s, err := os.Stat(name)
if err != nil {
t.Fatal(err)
}
if s.Mode() != perms {
t.Fatalf("got=%#o want=%#o: %v", s.Mode(), perms, name)
}
}