adjust tests for the new zod model

src/models/fixtures/projectFixture.ts

 import { ZOD_SEED } from '@/constants';
 // eslint-disable-next-line import/no-extraneous-dependencies
-import { createFixture } from 'zod-fixture';
+import { Fixture } from 'zod-fixture';
+import { diseaseNameGenerator } from '@/models/generators/diseaseNameGenerator';
+import { diseaseGenerator } from '@/models/generators/diseaseGenerator';
+import { organismGenerator } from '@/models/generators/organismGenerator';
+import { organismNameGenerator } from '@/models/generators/organismNameGenerator';
+import { topOverviewImageGenerator } from '@/models/generators/topOverviewImageGenerator';
 import { projectSchema } from '../projectSchema';
 
-export const projectFixture = createFixture(projectSchema, {
+const projectFixtureGenerator = new Fixture({ seed: ZOD_SEED }).extend([
+  diseaseNameGenerator,
+  diseaseGenerator,
+  organismNameGenerator,
+  organismGenerator,
+  topOverviewImageGenerator,
+]);
+
+export const projectFixture = projectFixtureGenerator.fromSchema(projectSchema, {
   seed: ZOD_SEED,
   array: { min: 1, max: 1 },
 });

src/models/generators/diseaseGenerator.ts

+// eslint-disable-next-line import/no-extraneous-dependencies
+import { createFixture, Generator } from 'zod-fixture';
+import { disease } from '@/models/disease';
+import { ZOD_SEED } from '@/constants';
+import { ZodNullable } from 'zod';
+
+export const diseaseGenerator = Generator({
+  schema: ZodNullable,
+  filter: ({ context }) => {
+    // eslint-disable-next-line no-magic-numbers
+    return context.path.at(-1) === 'disease';
+  },
+  output: () =>
+    createFixture(disease, {
+      seed: ZOD_SEED,
+      array: { min: 2, max: 2 },
+    }),
+});

src/models/generators/diseaseNameGenerator.ts

+import { ZodNullable, ZodString } from 'zod';
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { Generator } from 'zod-fixture';
+
+export const diseaseNameGenerator = Generator({
+  schema: ZodNullable<ZodString>,
+  // eslint-disable-next-line no-magic-numbers
+  filter: ({ context }) => context.path.at(-1) === 'diseaseName',
+  output: ({ transform }) => transform.utils.random.string({}),
+});

src/models/generators/organismGenerator.ts

+// eslint-disable-next-line import/no-extraneous-dependencies
+import { createFixture, Generator } from 'zod-fixture';
+import { ZOD_SEED } from '@/constants';
+import { ZodNullable } from 'zod';
+import { organism } from '@/models/organism';
+
+export const organismGenerator = Generator({
+  schema: ZodNullable,
+  // eslint-disable-next-line no-magic-numbers
+  filter: ({ context }) => context.path.at(-1) === 'organism',
+  output: () =>
+    createFixture(organism, {
+      seed: ZOD_SEED,
+      array: { min: 2, max: 2 },
+    }),
+});

src/models/generators/organismNameGenerator.ts

+import { ZodNullable, ZodString } from 'zod';
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { Generator } from 'zod-fixture';
+
+export const organismNameGenerator = Generator({
+  schema: ZodNullable<ZodString>,
+  // eslint-disable-next-line no-magic-numbers
+  filter: ({ context }) => context.path.at(-1) === 'organismName',
+  output: ({ transform }) => transform.utils.random.string({}),
+});

src/models/generators/topOverviewImageGenerator.ts

+// eslint-disable-next-line import/no-extraneous-dependencies
+import { createFixture, Generator } from 'zod-fixture';
+import { ZOD_SEED } from '@/constants';
+import { ZodNullable } from 'zod';
+import { overviewImageView } from '@/models/overviewImageView';
+
+export const topOverviewImageGenerator = Generator({
+  schema: ZodNullable,
+  // eslint-disable-next-line no-magic-numbers
+  filter: ({ context }) => context.path.at(-1) === 'topOverviewImage',
+  output: () =>
+    createFixture(overviewImageView, {
+      seed: ZOD_SEED,
+      array: { min: 2, max: 2 },
+    }),
+});