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|
package image
import (
"fmt"
"strings"
"testing"
"unicode/utf8"
)
func TestPromptSubjectUsesTranslationFirst(t *testing.T) {
t.Parallel()
if got := promptSubject(" apple ", "ябълка"); got != "apple" {
t.Fatalf("promptSubject() = %q, want %q", got, "apple")
}
}
func TestPromptSubjectFallsBackToOriginalWord(t *testing.T) {
t.Parallel()
if got := promptSubject(" ", "ябълка"); got != "ябълка" {
t.Fatalf("promptSubject() = %q, want %q", got, "ябълка")
}
}
func TestSanitizeSceneDescriptionRemovesLabelsAndFences(t *testing.T) {
t.Parallel()
scene := "```text\nScene: A bright apple sits centered on a wooden table.\n```"
if got := sanitizeSceneDescription(scene); got != "A bright apple sits centered on a wooden table" {
t.Fatalf("sanitizeSceneDescription() = %q", got)
}
}
func TestUsableSceneDescriptionRejectsTrivialContent(t *testing.T) {
t.Parallel()
if usableSceneDescription("A") {
t.Fatal("usableSceneDescription() unexpectedly accepted trivial scene")
}
if usableSceneDescription("A single, perfectly") {
t.Fatal("usableSceneDescription() unexpectedly accepted incomplete scene fragment")
}
}
func TestFallbackVisualDirectionForPhrase(t *testing.T) {
t.Parallel()
got := fallbackVisualDirection("to indulge someone")
if got == "" || !usableSceneDescription(got) {
t.Fatalf("fallbackVisualDirection() returned unusable phrase direction: %q", got)
}
}
func TestFallbackVisualDirectionForSingleWord(t *testing.T) {
t.Parallel()
got := fallbackVisualDirection("apple")
if got == "" || !strings.Contains(got, "single apple") {
t.Fatalf("fallbackVisualDirection() = %q", got)
}
}
func TestBuildEducationalPromptTruncatesLongSceneWithoutBreakingUTF8(t *testing.T) {
t.Parallel()
style := "Photorealism"
subject := "ябълка"
for {
template := fmt.Sprintf(
"Generate a %s flashcard image illustrating \"%s\". Scene: "+
"The image should be educational and suitable for language learning flashcards. "+
"Requirements: The main subject or concept must be clearly visible, centered, well lit, and easy to identify.",
style, subject,
)
if (maxImagePromptChars-len(template))%2 == 1 {
break
}
subject += "x"
}
scene := strings.Repeat("Ярка сцена с ябълки и хора, ", 80)
got := buildEducationalPrompt(style, scene, subject)
if !utf8.ValidString(got) {
t.Fatalf("buildEducationalPrompt() returned invalid UTF-8: %q", got)
}
if len(got) > maxImagePromptChars {
t.Fatalf("buildEducationalPrompt() length = %d, want <= %d", len(got), maxImagePromptChars)
}
if !strings.Contains(got, "...") {
t.Fatalf("buildEducationalPrompt() = %q, want truncated scene marker", got)
}
}
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