terraform/configs/config_build_test.go

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package configs
import (
"fmt"
"io/ioutil"
"path/filepath"
"reflect"
"sort"
"strings"
"testing"
"github.com/davecgh/go-spew/spew"
version "github.com/hashicorp/go-version"
"github.com/hashicorp/hcl/v2"
)
func TestBuildConfig(t *testing.T) {
parser := NewParser(nil)
mod, diags := parser.LoadConfigDir("testdata/config-build")
assertNoDiagnostics(t, diags)
if mod == nil {
t.Fatal("got nil root module; want non-nil")
}
versionI := 0
cfg, diags := BuildConfig(mod, ModuleWalkerFunc(
func(req *ModuleRequest) (*Module, *version.Version, hcl.Diagnostics) {
// For the sake of this test we're going to just treat our
// SourceAddr as a path relative to our fixture directory.
// A "real" implementation of ModuleWalker should accept the
// various different source address syntaxes Terraform supports.
sourcePath := filepath.Join("testdata/config-build", req.SourceAddr)
mod, diags := parser.LoadConfigDir(sourcePath)
version, _ := version.NewVersion(fmt.Sprintf("1.0.%d", versionI))
versionI++
return mod, version, diags
},
))
assertNoDiagnostics(t, diags)
if cfg == nil {
t.Fatal("got nil config; want non-nil")
}
var got []string
cfg.DeepEach(func(c *Config) {
got = append(got, fmt.Sprintf("%s %s", strings.Join(c.Path, "."), c.Version))
})
sort.Strings(got)
want := []string{
" <nil>",
"child_a 1.0.0",
"child_a.child_c 1.0.1",
"child_b 1.0.2",
"child_b.child_c 1.0.3",
}
if !reflect.DeepEqual(got, want) {
t.Fatalf("wrong result\ngot: %swant: %s", spew.Sdump(got), spew.Sdump(want))
}
if _, exists := cfg.Children["child_a"].Children["child_c"].Module.Outputs["hello"]; !exists {
t.Fatalf("missing output 'hello' in child_a.child_c")
}
if _, exists := cfg.Children["child_b"].Children["child_c"].Module.Outputs["hello"]; !exists {
t.Fatalf("missing output 'hello' in child_b.child_c")
}
if cfg.Children["child_a"].Children["child_c"].Module == cfg.Children["child_b"].Children["child_c"].Module {
t.Fatalf("child_a.child_c is same object as child_b.child_c; should not be")
}
}
func TestBuildConfigDiags(t *testing.T) {
parser := NewParser(nil)
mod, diags := parser.LoadConfigDir("testdata/nested-errors")
assertNoDiagnostics(t, diags)
if mod == nil {
t.Fatal("got nil root module; want non-nil")
}
versionI := 0
cfg, diags := BuildConfig(mod, ModuleWalkerFunc(
func(req *ModuleRequest) (*Module, *version.Version, hcl.Diagnostics) {
// For the sake of this test we're going to just treat our
// SourceAddr as a path relative to our fixture directory.
// A "real" implementation of ModuleWalker should accept the
// various different source address syntaxes Terraform supports.
sourcePath := filepath.Join("testdata/nested-errors", req.SourceAddr)
mod, diags := parser.LoadConfigDir(sourcePath)
version, _ := version.NewVersion(fmt.Sprintf("1.0.%d", versionI))
versionI++
return mod, version, diags
},
))
wantDiag := `testdata/nested-errors/child_c/child_c.tf:5,1-8: ` +
`Unsupported block type; Blocks of type "invalid" are not expected here.`
assertExactDiagnostics(t, diags, []string{wantDiag})
// we should still have module structure loaded
var got []string
cfg.DeepEach(func(c *Config) {
got = append(got, fmt.Sprintf("%s %s", strings.Join(c.Path, "."), c.Version))
})
sort.Strings(got)
want := []string{
" <nil>",
"child_a 1.0.0",
"child_a.child_c 1.0.1",
}
if !reflect.DeepEqual(got, want) {
t.Fatalf("wrong result\ngot: %swant: %s", spew.Sdump(got), spew.Sdump(want))
}
}
func TestBuildConfigChildModuleBackend(t *testing.T) {
parser := NewParser(nil)
mod, diags := parser.LoadConfigDir("testdata/nested-backend-warning")
assertNoDiagnostics(t, diags)
if mod == nil {
t.Fatal("got nil root module; want non-nil")
}
cfg, diags := BuildConfig(mod, ModuleWalkerFunc(
func(req *ModuleRequest) (*Module, *version.Version, hcl.Diagnostics) {
// For the sake of this test we're going to just treat our
// SourceAddr as a path relative to our fixture directory.
// A "real" implementation of ModuleWalker should accept the
// various different source address syntaxes Terraform supports.
sourcePath := filepath.Join("testdata/nested-backend-warning", req.SourceAddr)
mod, diags := parser.LoadConfigDir(sourcePath)
version, _ := version.NewVersion("1.0.0")
return mod, version, diags
},
))
assertDiagnosticSummary(t, diags, "Backend configuration ignored")
// we should still have module structure loaded
var got []string
cfg.DeepEach(func(c *Config) {
got = append(got, fmt.Sprintf("%s %s", strings.Join(c.Path, "."), c.Version))
})
sort.Strings(got)
want := []string{
" <nil>",
"child 1.0.0",
}
if !reflect.DeepEqual(got, want) {
t.Fatalf("wrong result\ngot: %swant: %s", spew.Sdump(got), spew.Sdump(want))
}
}
func TestBuildConfigInvalidModules(t *testing.T) {
testDir := "testdata/config-diagnostics"
dirs, err := ioutil.ReadDir(testDir)
if err != nil {
t.Fatal(err)
}
for _, info := range dirs {
name := info.Name()
t.Run(name, func(t *testing.T) {
parser := NewParser(nil)
path := filepath.Join(testDir, name)
mod, diags := parser.LoadConfigDir(path)
if diags.HasErrors() {
// these tests should only trigger errors that are caught in
// the config loader.
t.Errorf("error loading config dir")
for _, diag := range diags {
t.Logf("- %s", diag)
}
}
readDiags := func(data []byte, _ error) []string {
var expected []string
for _, s := range strings.Split(string(data), "\n") {
msg := strings.TrimSpace(s)
msg = strings.ReplaceAll(msg, `\n`, "\n")
if msg != "" {
expected = append(expected, msg)
}
}
return expected
}
// Load expected errors and warnings.
// Each line in the file is matched as a substring against the
// diagnostic outputs.
// Capturing part of the path and source range in the message lets
// us also ensure the diagnostic is being attributed to the
// expected location in the source, but is not required.
// The literal characters `\n` are replaced with newlines, but
// otherwise the string is unchanged.
expectedErrs := readDiags(ioutil.ReadFile(filepath.Join(testDir, name, "errors")))
expectedWarnings := readDiags(ioutil.ReadFile(filepath.Join(testDir, name, "warnings")))
_, buildDiags := BuildConfig(mod, ModuleWalkerFunc(
func(req *ModuleRequest) (*Module, *version.Version, hcl.Diagnostics) {
// for simplicity, these tests will treat all source
// addresses as relative to the root module
sourcePath := filepath.Join(path, req.SourceAddr)
mod, diags := parser.LoadConfigDir(sourcePath)
version, _ := version.NewVersion("1.0.0")
return mod, version, diags
},
))
// we can make this less repetitive later if we want
for _, msg := range expectedErrs {
found := false
for _, diag := range buildDiags {
if diag.Severity == hcl.DiagError && strings.Contains(diag.Error(), msg) {
found = true
break
}
}
if !found {
t.Errorf("Expected error diagnostic containing %q", msg)
}
}
for _, diag := range buildDiags {
if diag.Severity != hcl.DiagError {
continue
}
found := false
for _, msg := range expectedErrs {
if strings.Contains(diag.Error(), msg) {
found = true
break
}
}
if !found {
t.Errorf("Unexpected error: %q", diag)
}
}
for _, msg := range expectedWarnings {
found := false
for _, diag := range buildDiags {
if diag.Severity == hcl.DiagWarning && strings.Contains(diag.Error(), msg) {
found = true
break
}
}
if !found {
t.Errorf("Expected warning diagnostic containing %q", msg)
}
}
for _, diag := range buildDiags {
if diag.Severity != hcl.DiagWarning {
continue
}
found := false
for _, msg := range expectedWarnings {
if strings.Contains(diag.Error(), msg) {
found = true
break
}
}
if !found {
t.Errorf("Unexpected warning: %q", diag)
}
}
})
}
}