diff --git a/plugins/plugin-tools/src/config.ts b/plugins/plugin-tools/src/config.ts
index aaa5bea..20d7ff5 100644
--- a/plugins/plugin-tools/src/config.ts
+++ b/plugins/plugin-tools/src/config.ts
@@ -1,9 +1,3 @@
-import type {JunoConfig, JunoConfigFnOrObject} from '@junobuild/config';
-import {
-  junoConfigExist as junoConfigExistTools,
-  readJunoConfig as readJunoConfigTools,
-  type ConfigFilename
-} from '@junobuild/config-loader';
 import {
   CMC_ID,
   CYCLES_INDEX_ID,
@@ -20,6 +14,7 @@ import {
   SNS_WASM_ID
 } from './constants';
 import {JunoPluginError} from './error';
+import {assertJunoConfig, junoConfigExist, readJunoConfig} from './fs';
 import type {ConfigArgs, IcpIds, JunoParams} from './types';
 
 export const useDockerContainer = ({params, mode}: ConfigArgs): boolean =>
@@ -158,27 +153,3 @@ export const container = ({
 
   return undefined;
 };
-
-const JUNO_CONFIG_FILE: {filename: ConfigFilename} = {filename: 'juno.config'};
-
-const readJunoConfig = async ({mode}: ConfigArgs): Promise<JunoConfig> => {
-  const config = (userConfig: JunoConfigFnOrObject): JunoConfig =>
-    typeof userConfig === 'function' ? userConfig({mode}) : userConfig;
-
-  return await readJunoConfigTools({
-    ...JUNO_CONFIG_FILE,
-    config
-  });
-};
-
-export const assertJunoConfig = async () => {
-  const exist = await junoConfigExist();
-
-  if (!exist) {
-    throw new JunoPluginError(
-      `No Juno configuration found. Run "juno init" to configure your dapp.`
-    );
-  }
-};
-
-const junoConfigExist = (): Promise<boolean> => junoConfigExistTools(JUNO_CONFIG_FILE);
diff --git a/plugins/plugin-tools/src/fs.ts b/plugins/plugin-tools/src/fs.ts
new file mode 100644
index 0000000..d5560a0
--- /dev/null
+++ b/plugins/plugin-tools/src/fs.ts
@@ -0,0 +1,32 @@
+import type {JunoConfig, JunoConfigFnOrObject} from '@junobuild/config';
+import {
+  junoConfigExist as junoConfigExistTools,
+  readJunoConfig as readJunoConfigTools,
+  type ConfigFilename
+} from '@junobuild/config-loader';
+import {JunoPluginError} from './error';
+import type {ConfigArgs} from './types';
+
+const JUNO_CONFIG_FILE: {filename: ConfigFilename} = {filename: 'juno.config'};
+
+export const readJunoConfig = async ({mode}: ConfigArgs): Promise<JunoConfig> => {
+  const config = (userConfig: JunoConfigFnOrObject): JunoConfig =>
+    typeof userConfig === 'function' ? userConfig({mode}) : userConfig;
+
+  return await readJunoConfigTools({
+    ...JUNO_CONFIG_FILE,
+    config
+  });
+};
+
+export const assertJunoConfig = async () => {
+  const exist = await junoConfigExist();
+
+  if (!exist) {
+    throw new JunoPluginError(
+      `No Juno configuration found. Run "juno init" to configure your dapp.`
+    );
+  }
+};
+
+export const junoConfigExist = (): Promise<boolean> => junoConfigExistTools(JUNO_CONFIG_FILE);
diff --git a/plugins/plugin-tools/src/init.ts b/plugins/plugin-tools/src/init.ts
index 15eab58..e3cdf1d 100644
--- a/plugins/plugin-tools/src/init.ts
+++ b/plugins/plugin-tools/src/init.ts
@@ -1,11 +1,11 @@
 import {
-  assertJunoConfig,
   container as containerConfig,
   icpIds as icpIdsConfig,
   orbiterId as orbiterIdConfig,
   satelliteId as satelliteIdConfig,
   useDockerContainer
 } from './config';
+import {assertJunoConfig} from './fs';
 import type {ConfigArgs, IcpIds} from './types';
 
 export const initConfig = async (
diff --git a/plugins/plugin-tools/src/tests/config.spec.ts b/plugins/plugin-tools/src/tests/config.spec.ts
index 2beb211..74b162f 100644
--- a/plugins/plugin-tools/src/tests/config.spec.ts
+++ b/plugins/plugin-tools/src/tests/config.spec.ts
@@ -1,14 +1,7 @@
 import type {JunoConfig} from '@junobuild/config';
 import * as configLoader from '@junobuild/config-loader';
 
-import {
-  assertJunoConfig,
-  container,
-  icpIds,
-  orbiterId,
-  satelliteId,
-  useDockerContainer
-} from '../config';
+import {container, icpIds, orbiterId, satelliteId, useDockerContainer} from '../config';
 import {
   CMC_ID,
   CYCLES_INDEX_ID,
@@ -413,22 +406,4 @@ describe('config', () => {
       expect(url).toBeUndefined();
     });
   });
-
-  describe('assertJunoConfig', () => {
-    beforeEach(() => {
-      vi.clearAllMocks();
-    });
-
-    it('throws if config does not exist', async () => {
-      vi.spyOn(configLoader, 'junoConfigExist').mockResolvedValue(false);
-
-      await expect(assertJunoConfig()).rejects.toThrow(JunoPluginError);
-    });
-
-    it('resolves if config exists', async () => {
-      vi.spyOn(configLoader, 'junoConfigExist').mockResolvedValue(true);
-
-      await expect(assertJunoConfig()).resolves.toBeUndefined();
-    });
-  });
 });
diff --git a/plugins/plugin-tools/src/tests/fs.spec.ts b/plugins/plugin-tools/src/tests/fs.spec.ts
new file mode 100644
index 0000000..51bc905
--- /dev/null
+++ b/plugins/plugin-tools/src/tests/fs.spec.ts
@@ -0,0 +1,71 @@
+import * as configLoader from '@junobuild/config-loader';
+import {JunoPluginError} from '../error';
+import {assertJunoConfig, junoConfigExist, readJunoConfig} from '../fs';
+
+vi.mock('@junobuild/config-loader', async () => {
+  // eslint-disable-next-line @typescript-eslint/consistent-type-imports
+  const actual = await vi.importActual<typeof import('@junobuild/config-loader')>(
+    '@junobuild/config-loader'
+  );
+
+  return {
+    ...actual,
+    junoConfigExist: vi.fn(),
+    readJunoConfig: vi.fn()
+  };
+});
+
+describe('fs', () => {
+  beforeEach(() => {
+    vi.resetAllMocks();
+    vi.clearAllMocks();
+  });
+
+  describe('readJunoConfig', () => {
+    it('throws if config does not exist', async () => {
+      vi.spyOn(configLoader, 'readJunoConfig').mockRejectedValueOnce(new Error());
+
+      await expect(assertJunoConfig()).rejects.toThrow();
+    });
+
+    it('resolves if config exists', async () => {
+      const mockConfig = {
+        satellite: {ids: {development: 'dev-custom-id'}}
+      };
+
+      vi.spyOn(configLoader, 'readJunoConfig').mockResolvedValue(mockConfig);
+
+      const result = await readJunoConfig({mode: 'development'});
+
+      expect(result).toEqual(mockConfig);
+    });
+  });
+
+  describe('assertJunoConfig', () => {
+    it('throws if config does not exist', async () => {
+      vi.spyOn(configLoader, 'junoConfigExist').mockResolvedValue(false);
+
+      await expect(assertJunoConfig()).rejects.toThrow(JunoPluginError);
+    });
+
+    it('resolves if config exists', async () => {
+      vi.spyOn(configLoader, 'junoConfigExist').mockResolvedValue(true);
+
+      await expect(assertJunoConfig()).resolves.toBeUndefined();
+    });
+  });
+
+  describe('junoConfigExist', () => {
+    it('resolves false if config not exist', async () => {
+      vi.spyOn(configLoader, 'junoConfigExist').mockResolvedValue(false);
+
+      await expect(junoConfigExist()).resolves.toBeFalsy();
+    });
+
+    it('resolves true if config exists', async () => {
+      vi.spyOn(configLoader, 'junoConfigExist').mockResolvedValue(true);
+
+      await expect(junoConfigExist()).resolves.toBeTruthy();
+    });
+  });
+});