Add tests for main package, manager, and various components

- Introduced unit tests for the main package to ensure compilation.
- Added tests for the manager, including validation of upload sessions and handling of Blender binary paths.
- Implemented tests for job token generation and validation, ensuring security and integrity.
- Created tests for configuration management and database schema to verify functionality.
- Added tests for logger and runner components to enhance overall test coverage and reliability.

internal/manager/jobs_test.go

@@ -0,0 +1,145 @@
+package api
+
+import (
+	"archive/tar"
+	"bytes"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestGenerateAndCheckETag(t *testing.T) {
+	etag := generateETag(map[string]interface{}{"a": 1})
+	if etag == "" {
+		t.Fatal("expected non-empty etag")
+	}
+	req := httptest.NewRequest("GET", "/x", nil)
+	req.Header.Set("If-None-Match", etag)
+	if !checkETag(req, etag) {
+		t.Fatal("expected etag match")
+	}
+}
+
+func TestUploadSessionPhase(t *testing.T) {
+	if got := uploadSessionPhase("uploading"); got != "upload" {
+		t.Fatalf("unexpected phase: %q", got)
+	}
+	if got := uploadSessionPhase("select_blend"); got != "action_required" {
+		t.Fatalf("unexpected phase: %q", got)
+	}
+	if got := uploadSessionPhase("something_else"); got != "processing" {
+		t.Fatalf("unexpected fallback phase: %q", got)
+	}
+}
+
+func TestParseTarHeader_AndTruncateString(t *testing.T) {
+	var buf bytes.Buffer
+	tw := tar.NewWriter(&buf)
+	_ = tw.WriteHeader(&tar.Header{Name: "a.txt", Mode: 0644, Size: 3, Typeflag: tar.TypeReg})
+	_, _ = tw.Write([]byte("abc"))
+	_ = tw.Close()
+
+	raw := buf.Bytes()
+	if len(raw) < 512 {
+		t.Fatal("tar buffer unexpectedly small")
+	}
+	var h tar.Header
+	if err := parseTarHeader(raw[:512], &h); err != nil {
+		t.Fatalf("parseTarHeader failed: %v", err)
+	}
+	if h.Name != "a.txt" {
+		t.Fatalf("unexpected parsed name: %q", h.Name)
+	}
+
+	if got := truncateString("abcdef", 5); got != "ab..." {
+		t.Fatalf("truncateString = %q, want %q", got, "ab...")
+	}
+}
+
+func TestValidateUploadSessionForJobCreation_MissingSession(t *testing.T) {
+	s := &Manager{
+		uploadSessions: map[string]*UploadSession{},
+	}
+	_, _, err := s.validateUploadSessionForJobCreation("missing", 1)
+	if err == nil {
+		t.Fatal("expected validation error for missing session")
+	}
+	sessionErr, ok := err.(*uploadSessionValidationError)
+	if !ok || sessionErr.Code != uploadSessionExpiredCode {
+		t.Fatalf("expected %s validation error, got %#v", uploadSessionExpiredCode, err)
+	}
+}
+
+func TestValidateUploadSessionForJobCreation_ContextMissing(t *testing.T) {
+	tmpDir := t.TempDir()
+	s := &Manager{
+		uploadSessions: map[string]*UploadSession{
+			"s1": {
+				SessionID: "s1",
+				UserID:    9,
+				TempDir:   tmpDir,
+				Status:    "completed",
+				CreatedAt: time.Now(),
+			},
+		},
+	}
+
+	if _, _, err := s.validateUploadSessionForJobCreation("s1", 9); err == nil {
+		t.Fatal("expected error when context.tar is missing")
+	}
+}
+
+func TestValidateUploadSessionForJobCreation_NotReady(t *testing.T) {
+	tmpDir := t.TempDir()
+	s := &Manager{
+		uploadSessions: map[string]*UploadSession{
+			"s1": {
+				SessionID: "s1",
+				UserID:    9,
+				TempDir:   tmpDir,
+				Status:    "processing",
+				CreatedAt: time.Now(),
+			},
+		},
+	}
+
+	_, _, err := s.validateUploadSessionForJobCreation("s1", 9)
+	if err == nil {
+		t.Fatal("expected error for session that is not completed")
+	}
+	sessionErr, ok := err.(*uploadSessionValidationError)
+	if !ok || sessionErr.Code != uploadSessionNotReadyCode {
+		t.Fatalf("expected %s validation error, got %#v", uploadSessionNotReadyCode, err)
+	}
+}
+
+func TestValidateUploadSessionForJobCreation_Success(t *testing.T) {
+	tmpDir := t.TempDir()
+	contextPath := filepath.Join(tmpDir, "context.tar")
+	if err := os.WriteFile(contextPath, []byte("tar-bytes"), 0644); err != nil {
+		t.Fatalf("write context.tar: %v", err)
+	}
+
+	s := &Manager{
+		uploadSessions: map[string]*UploadSession{
+			"s1": {
+				SessionID: "s1",
+				UserID:    9,
+				TempDir:   tmpDir,
+				Status:    "completed",
+				CreatedAt: time.Now(),
+			},
+		},
+	}
+
+	session, gotPath, err := s.validateUploadSessionForJobCreation("s1", 9)
+	if err != nil {
+		t.Fatalf("expected valid session, got error: %v", err)
+	}
+	if session == nil || gotPath != contextPath {
+		t.Fatalf("unexpected result: session=%v path=%q", session, gotPath)
+	}
+}
+