make spo user get command return current user if no arguments are provided

docs/docs/cmd/spo/user/user-get.mdx

@@ -49,6 +49,11 @@ Get user by login name for a web
 ```sh
 m365 spo user get --webUrl https://contoso.sharepoint.com/sites/project-x --loginName "i:0#.f|membership|[email protected]"
 ```
+Get user logged-in currently
+
+```sh
+m365 spo user get --webUrl https://contoso.sharepoint.com/sites/project-x
+```
 
 ## Response
 

src/m365/spo/commands/user/user-get.spec.ts

@@ -116,7 +116,6 @@ describe(commands.USER_GET, () => {
     }));
   });
 
-
   it('retrieves user by email with output option json', async () => {
     sinon.stub(request, 'get').callsFake(async (opts) => {
       if ((opts.url as string).indexOf('/_api/web/siteusers/GetByEmail') > -1) {
@@ -215,6 +214,53 @@ describe(commands.USER_GET, () => {
     }));
   });
 
+
+  it('retrieves current logged in user', async () => {
+    sinon.stub(request, 'get').callsFake(async (opts) => {
+      if (opts.url === 'https://contoso.sharepoint.com/_api/web/currentuser') {
+        return {
+          "value": [{
+            "Id": 6,
+            "IsHiddenInUI": false,
+            "LoginName": "i:0#.f|membership|[email protected]",
+            "Title": "John Doe",
+            "PrincipalType": 1,
+            "Email": "[email protected]",
+            "Expiration": "",
+            "IsEmailAuthenticationGuestUser": false,
+            "IsShareByEmailGuestUser": false,
+            "IsSiteAdmin": false,
+            "UserId": { "NameId": "10010001b0c19a2", "NameIdIssuer": "urn:federation:microsoftonline" },
+            "UserPrincipalName": "[email protected]"
+          }]
+        };
+      }
+      throw 'Invalid request';
+    });
+
+    await command.action(logger, {
+      options: {
+        webUrl: 'https://contoso.sharepoint.com'
+      }
+    });
+    assert(loggerLogSpy.calledWith({
+      value: [{
+        Id: 6,
+        IsHiddenInUI: false,
+        LoginName: "i:0#.f|membership|[email protected]",
+        Title: "John Doe",
+        PrincipalType: 1,
+        Email: "[email protected]",
+        Expiration: "",
+        IsEmailAuthenticationGuestUser: false,
+        IsShareByEmailGuestUser: false,
+        IsSiteAdmin: false,
+        UserId: { NameId: "10010001b0c19a2", NameIdIssuer: "urn:federation:microsoftonline" },
+        UserPrincipalName: "[email protected]"
+      }]
+    }));
+  });
+
   it('handles error correctly', async () => {
     sinon.stub(request, 'get').callsFake(() => {
       throw 'An error has occurred';
@@ -244,18 +290,6 @@ describe(commands.USER_GET, () => {
     assert.notStrictEqual(actual, true);
   });
 
-  it('fails validation if id or email or loginName options are not passed', async () => {
-    sinon.stub(cli, 'getSettingWithDefaultValue').callsFake((settingName, defaultValue) => {
-      if (settingName === settingsNames.prompt) {
-        return false;
-      }
-
-      return defaultValue;
-    });
-
-    const actual = await command.validate({ options: { webUrl: 'https://contoso.sharepoint.com' } }, commandInfo);
-    assert.notStrictEqual(actual, true);
-  });
 
   it('fails validation if id, email and loginName options are passed (multiple options)', async () => {
     sinon.stub(cli, 'getSettingWithDefaultValue').callsFake((settingName, defaultValue) => {
@@ -328,4 +362,9 @@ describe(commands.USER_GET, () => {
     const actual = await command.validate({ options: { webUrl: 'https://contoso.sharepoint.com', loginName: "i:0#.f|membership|[email protected]" } }, commandInfo);
     assert.strictEqual(actual, true);
   });
+
+  it('passes validation if the url is valid and no other options are provided', async () => {
+    const actual = await command.validate({ options: { webUrl: 'https://contoso.sharepoint.com' } }, commandInfo);
+    assert.strictEqual(actual, true);
+  });
 }); 

src/m365/spo/commands/user/user-get.ts

@@ -76,7 +76,10 @@ class SpoUserGetCommand extends SpoCommand {
   }
 
   #initOptionSets(): void {
-    this.optionSets.push({ options: ['id', 'email', 'loginName'] });
+    this.optionSets.push({
+      options: ['id', 'email', 'loginName'],
+      runsWhen: (args) => args.options.id || args.options.loginName || args.options.email
+    });
   }
 
   public async commandAction(logger: Logger, args: CommandArgs): Promise<void> {
@@ -95,6 +98,9 @@ class SpoUserGetCommand extends SpoCommand {
     else if (args.options.loginName) {
       requestUrl = `${args.options.webUrl}/_api/web/siteusers/GetByLoginName('${formatting.encodeQueryParameter(args.options.loginName)}')`;
     }
+    else {
+      requestUrl = `${args.options.webUrl}/_api/web/currentuser`;
+    }
 
     const requestOptions: CliRequestOptions = {
       url: requestUrl,