feat: improve test user.changePassword (#66)

Fixes #53

src/user/__snapshots__/user.spec.js.snap

@@ -1,5 +1,15 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`user .changePassword() : changes the actual user password 1`] = `true`;
+
+exports[`user .changePassword() : changes the actual user password 2`] = `[JsonRpcError: invalid credentials]`;
+
+exports[`user .changePassword() : fails trying to change the password with invalid oldPassword 1`] = `[JsonRpcError: invalid credentials]`;
+
+exports[`user .changePassword() : fails trying to change the password without newPassword 1`] = `[JsonRpcError: invalid parameters]`;
+
+exports[`user .changePassword() : fails trying to change the password without oldPassword 1`] = `[JsonRpcError: invalid parameters]`;
+
 exports[`user .create() : creates a user with permission 1`] = `
 Object {
   "email": "wayne2@vates.fr",

src/user/user.spec.js

@@ -64,6 +64,60 @@ describe("user", () => {
     });
   });
 
+  describe(".changePassword() :", () => {
+    it("changes the actual user password", async () => {
+      const user = {
+        email: "wayne7@vates.fr",
+        password: "batman",
+      };
+      const newPassword = "newpwd";
+
+      await xo.createUser(user);
+      await testWithOtherConnection(user, xo =>
+        expect(
+          xo.call("user.changePassword", {
+            oldPassword: user.password,
+            newPassword,
+          })
+        ).resolves.toMatchSnapshot()
+      );
+
+      await testConnection({
+        credentials: {
+          email: user.email,
+          password: newPassword,
+        },
+      });
+
+      await expect(
+        testConnection({
+          credentials: user,
+        })
+      ).rejects.toMatchSnapshot();
+    });
+
+    withData(
+      {
+        "fails trying to change the password without newPassword": {
+          oldPassword: simpleUser.password,
+        },
+        "fails trying to change the password without oldPassword": {
+          newPassword: "newpwd",
+        },
+        "fails trying to change the password with invalid oldPassword": {
+          oldPassword: "falsepwd",
+          newPassword: "newpwd",
+        },
+      },
+      async data => {
+        await xo.createUser(simpleUser);
+        await testWithOtherConnection(simpleUser, xo =>
+          expect(xo.call("user.changePassword", data)).rejects.toMatchSnapshot()
+        );
+      }
+    );
+  });
+
   describe(".getAll() :", () => {
     it("gets all the users created", async () => {
       const userId1 = await xo.createUser({