diff --git a/.github/workflows/test-credential-commands.yml b/.github/workflows/test-credential-commands.yml
index 9fa6dbc72..1bef9707d 100644
--- a/.github/workflows/test-credential-commands.yml
+++ b/.github/workflows/test-credential-commands.yml
@@ -82,7 +82,27 @@ jobs:
             command_line: rit list credential
             assert_file_path: testdata/gha_workflows/credential_workflow/assert1.txt
             expected_result: PASSED
-
+        - name: RIT SET CREDENTIAL command ERROR (3)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: rit set credential --flag=test
+            assert_file_path: testdata/gha_workflows/credential_workflow/assert3.txt
+            expected_result: PASSED
+            specific_line: 1
+        - name: RIT DELETE CREDENTIAL command ERROR (4)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: rit delete credential --flag=test
+            assert_file_path: testdata/gha_workflows/credential_workflow/assert3.txt
+            expected_result: PASSED
+            specific_line: 1
+        - name: RIT DELETE CREDENTIAL command ERROR (5)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: rit delete credential --provider=new_test
+            contains: no such file or directory
+            expected_result: PASSED
+            
   macos:
       runs-on: macos-latest
       steps:
@@ -117,7 +137,27 @@ jobs:
             command_line: rit list credential
             assert_file_path: testdata/gha_workflows/credential_workflow/assert1.txt
             expected_result: PASSED
-
+        - name: RIT SET CREDENTIAL command ERROR (3)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: rit set credential --flag=test
+            assert_file_path: testdata/gha_workflows/credential_workflow/assert3.txt
+            expected_result: PASSED
+            specific_line: 1
+        - name: RIT DELETE CREDENTIAL command ERROR (4)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: rit delete credential --flag=test
+            assert_file_path: testdata/gha_workflows/credential_workflow/assert3.txt
+            expected_result: PASSED
+            specific_line: 1
+        - name: RIT DELETE CREDENTIAL command ERROR (5)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: rit delete credential --provider=new_test
+            contains: no such file or directory
+            expected_result: PASSED
+            
   windows:
       runs-on: windows-latest
       steps:
@@ -153,3 +193,23 @@ jobs:
             command_line: ./rit.exe list credential
             assert_file_path: testdata/gha_workflows/credential_workflow/assert1.txt
             expected_result: PASSED
+        - name: RIT SET CREDENTIAL command ERROR (3)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: ./rit.exe set credential --flag=test
+            assert_file_path: testdata/gha_workflows/credential_workflow/assert3.txt
+            expected_result: PASSED
+            specific_line: 1
+        - name: RIT DELETE CREDENTIAL command ERROR (4)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: ./rit.exe delete credential --flag=test
+            assert_file_path: testdata/gha_workflows/credential_workflow/assert3.txt
+            expected_result: PASSED
+            specific_line: 1
+        - name: RIT DELETE CREDENTIAL command ERROR (5)
+          uses: GuillaumeFalourd/test-cli-commands-action@v1
+          with:
+            command_line: ./rit.exe delete credential --provider=new_test
+            contains: The system cannot find the file specified.
+            expected_result: PASSED
diff --git a/testdata/gha_workflows/credential_workflow/assert3.txt b/testdata/gha_workflows/credential_workflow/assert3.txt
new file mode 100644
index 000000000..c3712cffa
--- /dev/null
+++ b/testdata/gha_workflows/credential_workflow/assert3.txt
@@ -0,0 +1 @@
+Error: unknown flag: --flag