larvit/fejkdata
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Test that the shipped data loads from a Go package per module, that a bare New fails naming WithDataFS, and that a read nothing provides names the modules its reader's manifest reads

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This commit is contained in:
Lilleman auf Larv
2026-10-10 13:08:01 +02:00
committed by Lillem4n
parent bf1becbb59
commit 3368f085fd
26 changed files with 471 additions and 188 deletions
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shipped_data_test.go
+30 -10
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@@ -9,8 +9,16 @@ import (
"testing/fstest"
)
func TestNewDefaultsToShippedData(t *testing.T) {
f, err := New(WithSeed(1))
func TestABareNewFailsNamingWithDataFS(t *testing.T) {
for name, opts := range map[string][]Option{"no option": nil, "only a seed": {WithSeed(1)}} {
if _, err := New(opts...); err == nil || !strings.Contains(err.Error(), "WithDataFS(data.Modules()...)") {
t.Errorf("New(%s) = %v, want it refused, naming WithDataFS(data.Modules()...)", name, err)
}
}
}
func TestEveryShippedModuleLoads(t *testing.T) {
f, err := New(withShipped(), WithSeed(1))
if err != nil {
t.Fatalf("New() = %v", err)
}
@@ -27,7 +35,7 @@ func TestNewDefaultsToShippedData(t *testing.T) {
func TestWithDataPathLayersOverShipped(t *testing.T) {
dir := writeData(t, map[string]string{"sv_SE/word": `"only-mine"`, "greeting": `"hej"`})
f, err := New(WithDataPath(dir), WithSeed(1))
f, err := New(withShipped(), WithDataPath(dir), WithSeed(1))
if err != nil {
t.Fatalf("New = %v", err)
}
@@ -44,7 +52,7 @@ func TestWithDataPathLayersOverShipped(t *testing.T) {
func TestUserDataMayReferenceShipped(t *testing.T) {
dir := writeData(t, map[string]string{"greeting": `"Hej {/sv_SE.person}!"`})
f, err := New(WithDataPath(dir), WithSeed(1))
f, err := New(withShipped(), WithDataPath(dir), WithSeed(1))
if err != nil {
t.Fatalf("New = %v", err)
}
@@ -61,8 +69,8 @@ func TestAGeneratorWithDataSaysNothingOfNoData(t *testing.T) {
func TestAGeneratorWithNoDataRendersWhatReadsNone(t *testing.T) {
for name, opts := range map[string][]Option{
"no source": {WithoutShippedData()},
"empty folder": {WithoutShippedData(), WithDataPath(t.TempDir())},
"no module": {WithDataFS()},
"empty folder": {WithDataPath(t.TempDir())},
} {
f, err := New(opts...)
if err != nil {
@@ -83,7 +91,7 @@ func TestAGeneratorWithNoDataRendersWhatReadsNone(t *testing.T) {
}
}
func TestWithoutShippedDataListsOnlyOwn(t *testing.T) {
func TestADataPathAloneListsOnlyItsOwn(t *testing.T) {
dir := writeData(t, map[string]string{"greeting": `"hej"`})
f := newGenerator(t, dir, WithSeed(1))
if got := f.List(); !reflect.DeepEqual(got, []string{"greeting"}) {
@@ -98,7 +106,7 @@ func TestWithDataFS(t *testing.T) {
".hidden.json": {Data: []byte(`"ignored"`)},
"broken/no.json": {Data: []byte(`"x"`)},
}
f, err := New(WithoutShippedData(), WithDataFS(fsys), WithSeed(1))
f, err := New(WithDataFS(fsys), WithSeed(1))
if err != nil {
t.Fatalf("New(WithDataFS) = %v", err)
}
@@ -109,13 +117,25 @@ func TestWithDataFS(t *testing.T) {
t.Errorf("nested.x.y = %q, want z", got)
}
bad := fstest.MapFS{"broken.json": {Data: []byte(`{ not json`)}}
if _, err := New(WithoutShippedData(), WithDataFS(bad)); err == nil || !strings.Contains(err.Error(), "broken.json") {
if _, err := New(WithDataFS(bad)); err == nil || !strings.Contains(err.Error(), "broken.json") {
t.Errorf("New(bad fs) = %v, want an error naming the file", err)
}
}
func TestWithDataFSLayersEachModuleOverTheOneBefore(t *testing.T) {
a := fstest.MapFS{"x.json": {Data: []byte(`"a"`)}, "y.json": {Data: []byte(`"a"`)}}
b := fstest.MapFS{"x.json": {Data: []byte(`"b"`)}}
f, err := New(WithDataFS(a, b))
if err != nil {
t.Fatalf("New(WithDataFS(a, b)) = %v", err)
}
if got := fake(t, f, "x") + fake(t, f, "y"); got != "ba" {
t.Errorf("x and y = %q, want b's x and a's y", got)
}
}
func TestFakeIsSafeForConcurrentUse(t *testing.T) {
f, err := New(WithSeed(1))
f, err := New(withShipped(), WithSeed(1))
if err != nil {
t.Fatal(err)
}