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terraform_test.go
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terraform_test.go
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package tfexec
import (
"context"
"errors"
"io/ioutil"
"os"
"testing"
"github.com/hashicorp/terraform-exec/tfexec/internal/testutil"
)
var tfCache *testutil.TFCache
func TestMain(m *testing.M) {
os.Exit(func() int {
var err error
installDir, err := ioutil.TempDir("", "tfinstall")
if err != nil {
panic(err)
}
defer os.RemoveAll(installDir)
tfCache = testutil.NewTFCache(installDir)
return m.Run()
}())
}
func TestSetEnv(t *testing.T) {
td := t.TempDir()
tf, err := NewTerraform(td, tfVersion(t, testutil.Latest012))
if err != nil {
t.Fatal(err)
}
for _, c := range []struct {
errManual bool
name string
}{
{false, "OK_ENV_VAR"},
{true, "TF_LOG"},
{true, "TF_VAR_foo"},
} {
t.Run(c.name, func(t *testing.T) {
err = tf.SetEnv(map[string]string{c.name: "foo"})
if c.errManual {
var evErr *ErrManualEnvVar
if !errors.As(err, &evErr) {
t.Fatalf("expected ErrManualEnvVar, got %T %s", err, err)
}
} else {
if !c.errManual && err != nil {
t.Fatal(err)
}
}
})
}
}
func TestCheckpointDisablePropagation(t *testing.T) {
td := t.TempDir()
tf, err := NewTerraform(td, tfVersion(t, testutil.Latest012))
if err != nil {
t.Fatal(err)
}
err = os.Setenv("CHECKPOINT_DISABLE", "1")
if err != nil {
t.Fatal(err)
}
defer os.Unsetenv("CHECKPOINT_DISABLE")
t.Run("case 1: env var is set in environment and not overridden", func(t *testing.T) {
err = tf.SetEnv(map[string]string{
"FOOBAR": "1",
})
if err != nil {
t.Fatal(err)
}
initCmd, err := tf.initCmd(context.Background())
if err != nil {
t.Fatal(err)
}
assertCmd(t, []string{
"init",
"-no-color",
"-force-copy",
"-input=false",
"-lock-timeout=0s",
"-backend=true",
"-get=true",
"-upgrade=false",
"-lock=true",
"-get-plugins=true",
"-verify-plugins=true",
}, map[string]string{
"CHECKPOINT_DISABLE": "1",
"FOOBAR": "1",
}, initCmd)
})
t.Run("case 2: env var is set in environment and overridden with SetEnv", func(t *testing.T) {
err = tf.SetEnv(map[string]string{
"CHECKPOINT_DISABLE": "",
"FOOBAR": "2",
})
if err != nil {
t.Fatal(err)
}
initCmd, err := tf.initCmd(context.Background())
if err != nil {
t.Fatal(err)
}
assertCmd(t, []string{
"init",
"-no-color",
"-force-copy",
"-input=false",
"-lock-timeout=0s",
"-backend=true",
"-get=true",
"-upgrade=false",
"-lock=true",
"-get-plugins=true",
"-verify-plugins=true",
}, map[string]string{
"CHECKPOINT_DISABLE": "",
"FOOBAR": "2",
}, initCmd)
})
}
// test that a suitable error is returned if NewTerraform is called without a valid
// executable path
func TestNoTerraformBinary(t *testing.T) {
td := t.TempDir()
_, err := NewTerraform(td, "")
if err == nil {
t.Fatal("expected NewTerraform to error, but it did not")
}
var e *ErrNoSuitableBinary
if !errors.As(err, &e) {
t.Fatal("expected error to be ErrNoSuitableBinary")
}
}
func tfVersion(t *testing.T, v string) string {
if tfCache == nil {
t.Fatalf("tfCache not yet configured, TestMain must run first")
}
return tfCache.Version(t, v)
}