terraform/internal/configs/configload/loader_load_test.go

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package configload
import (
"path/filepath"
"reflect"
"sort"
"strings"
"testing"
"github.com/davecgh/go-spew/spew"
"github.com/zclconf/go-cty/cty"
"github.com/hashicorp/terraform/internal/configs"
)
func TestLoaderLoadConfig_okay(t *testing.T) {
fixtureDir := filepath.Clean("testdata/already-installed")
loader, err := NewLoader(&Config{
ModulesDir: filepath.Join(fixtureDir, ".terraform/modules"),
})
if err != nil {
t.Fatalf("unexpected error from NewLoader: %s", err)
}
cfg, diags := loader.LoadConfig(fixtureDir)
assertNoDiagnostics(t, diags)
if cfg == nil {
t.Fatalf("config is nil; want non-nil")
}
var gotPaths []string
cfg.DeepEach(func(c *configs.Config) {
gotPaths = append(gotPaths, strings.Join(c.Path, "."))
})
sort.Strings(gotPaths)
wantPaths := []string{
"", // root module
"child_a",
"child_a.child_c",
"child_b",
"child_b.child_d",
}
if !reflect.DeepEqual(gotPaths, wantPaths) {
t.Fatalf("wrong module paths\ngot: %swant %s", spew.Sdump(gotPaths), spew.Sdump(wantPaths))
}
t.Run("child_a.child_c output", func(t *testing.T) {
output := cfg.Children["child_a"].Children["child_c"].Module.Outputs["hello"]
got, diags := output.Expr.Value(nil)
assertNoDiagnostics(t, diags)
assertResultCtyEqual(t, got, cty.StringVal("Hello from child_c"))
})
t.Run("child_b.child_d output", func(t *testing.T) {
output := cfg.Children["child_b"].Children["child_d"].Module.Outputs["hello"]
got, diags := output.Expr.Value(nil)
assertNoDiagnostics(t, diags)
assertResultCtyEqual(t, got, cty.StringVal("Hello from child_d"))
})
}
func TestLoaderLoadConfig_addVersion(t *testing.T) {
// This test is for what happens when there is a version constraint added
// to a module that previously didn't have one.
fixtureDir := filepath.Clean("testdata/add-version-constraint")
loader, err := NewLoader(&Config{
ModulesDir: filepath.Join(fixtureDir, ".terraform/modules"),
})
if err != nil {
t.Fatalf("unexpected error from NewLoader: %s", err)
}
_, diags := loader.LoadConfig(fixtureDir)
if !diags.HasErrors() {
t.Fatalf("success; want error")
}
got := diags.Error()
want := "Module version requirements have changed"
if !strings.Contains(got, want) {
t.Fatalf("wrong error\ngot:\n%s\n\nwant: containing %q", got, want)
}
}
func TestLoaderLoadConfig_loadDiags(t *testing.T) {
// building a config which didn't load correctly may cause configs to panic
fixtureDir := filepath.Clean("testdata/invalid-names")
loader, err := NewLoader(&Config{
ModulesDir: filepath.Join(fixtureDir, ".terraform/modules"),
})
if err != nil {
t.Fatalf("unexpected error from NewLoader: %s", err)
}
cfg, diags := loader.LoadConfig(fixtureDir)
if !diags.HasErrors() {
t.Fatal("success; want error")
}
if cfg == nil {
t.Fatal("partial config not returned with diagnostics")
}
if cfg.Module == nil {
t.Fatal("expected config module")
}
}