diff --git a/homeassistant/components/ista_ecotrend/quality_scale.yaml b/homeassistant/components/ista_ecotrend/quality_scale.yaml
index ed7f170eadc..7e1e6fb92d9 100644
--- a/homeassistant/components/ista_ecotrend/quality_scale.yaml
+++ b/homeassistant/components/ista_ecotrend/quality_scale.yaml
@@ -6,9 +6,7 @@ rules:
   appropriate-polling: done
   brands: done
   common-modules: done
-  config-flow-test-coverage:
-    status: todo
-    comment: test_form/docstrings outdated, test already_configuret, test abort conditions in reauth,
+  config-flow-test-coverage: done
   config-flow: done
   dependency-transparency: done
   docs-actions:
diff --git a/tests/components/ista_ecotrend/conftest.py b/tests/components/ista_ecotrend/conftest.py
index 7edf2e4717b..161c03c15d1 100644
--- a/tests/components/ista_ecotrend/conftest.py
+++ b/tests/components/ista_ecotrend/conftest.py
@@ -80,7 +80,7 @@ def mock_ista() -> Generator[MagicMock]:
             "26e93f1a-c828-11ea-87d0-0242ac130003",
             "eaf5c5c8-889f-4a3c-b68c-e9a676505762",
         ]
-        client.get_consumption_data = get_consumption_data
+        client.get_consumption_data.return_value = get_consumption_data()
 
         yield client
 
diff --git a/tests/components/ista_ecotrend/test_config_flow.py b/tests/components/ista_ecotrend/test_config_flow.py
index d6c88c51c99..e29c12f01f2 100644
--- a/tests/components/ista_ecotrend/test_config_flow.py
+++ b/tests/components/ista_ecotrend/test_config_flow.py
@@ -11,6 +11,8 @@ from homeassistant.const import CONF_EMAIL, CONF_PASSWORD
 from homeassistant.core import HomeAssistant
 from homeassistant.data_entry_flow import FlowResultType
 
+from tests.common import MockConfigEntry
+
 
 @pytest.mark.usefixtures("mock_ista")
 async def test_form(hass: HomeAssistant, mock_setup_entry: AsyncMock) -> None:
@@ -47,14 +49,14 @@ async def test_form(hass: HomeAssistant, mock_setup_entry: AsyncMock) -> None:
         (IndexError, "unknown"),
     ],
 )
-async def test_form_invalid_auth(
+async def test_form_error_and_recover(
     hass: HomeAssistant,
     mock_setup_entry: AsyncMock,
     mock_ista: MagicMock,
     side_effect: Exception,
     error_text: str,
 ) -> None:
-    """Test we handle invalid auth."""
+    """Test config flow error and recover."""
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": SOURCE_USER}
     )
@@ -89,10 +91,10 @@ async def test_form_invalid_auth(
     assert len(mock_setup_entry.mock_calls) == 1
 
 
+@pytest.mark.usefixtures("mock_ista")
 async def test_reauth(
     hass: HomeAssistant,
-    ista_config_entry: AsyncMock,
-    mock_ista: MagicMock,
+    ista_config_entry: MockConfigEntry,
 ) -> None:
     """Test reauth flow."""
 
@@ -131,12 +133,12 @@ async def test_reauth(
 )
 async def test_reauth_error_and_recover(
     hass: HomeAssistant,
-    ista_config_entry: AsyncMock,
+    ista_config_entry: MockConfigEntry,
     mock_ista: MagicMock,
     side_effect: Exception,
     error_text: str,
 ) -> None:
-    """Test reauth flow."""
+    """Test reauth flow error and recover."""
 
     ista_config_entry.add_to_hass(hass)
 
@@ -174,3 +176,31 @@ async def test_reauth_error_and_recover(
         CONF_PASSWORD: "new-password",
     }
     assert len(hass.config_entries.async_entries()) == 1
+
+
+@pytest.mark.usefixtures("mock_ista")
+async def test_form__already_configured(
+    hass: HomeAssistant,
+    ista_config_entry: MockConfigEntry,
+) -> None:
+    """Test we abort form login when entry is already configured."""
+
+    ista_config_entry.add_to_hass(hass)
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_USER}
+    )
+
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "user"
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={
+            CONF_EMAIL: "new@example.com",
+            CONF_PASSWORD: "new-password",
+        },
+    )
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "already_configured"
diff --git a/tests/components/ista_ecotrend/test_init.py b/tests/components/ista_ecotrend/test_init.py
index a15e4577252..b73232a7d74 100644
--- a/tests/components/ista_ecotrend/test_init.py
+++ b/tests/components/ista_ecotrend/test_init.py
@@ -1,11 +1,12 @@
 """Test the ista EcoTrend init."""
 
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 
 from pyecotrend_ista import KeycloakError, LoginError, ParserError, ServerError
 import pytest
 from syrupy.assertion import SnapshotAssertion
 
+from homeassistant.components.ista_ecotrend.const import DOMAIN
 from homeassistant.config_entries import SOURCE_REAUTH, ConfigEntryState
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import device_registry as dr
@@ -60,7 +61,7 @@ async def test_config_entry_auth_failed(
     mock_ista: MagicMock,
     side_effect: Exception,
 ) -> None:
-    """Test config entry not ready."""
+    """Test config entry auth failed."""
     mock_ista.login.side_effect = side_effect
     ista_config_entry.add_to_hass(hass)
     await hass.config_entries.async_setup(ista_config_entry.entry_id)
@@ -88,3 +89,49 @@ async def test_device_registry(
         device_registry, ista_config_entry.entry_id
     ):
         assert device == snapshot
+
+
+async def test_update_failed(
+    hass: HomeAssistant,
+    ista_config_entry: MockConfigEntry,
+    mock_ista: MagicMock,
+) -> None:
+    """Test coordinator update failed."""
+
+    with patch(
+        "homeassistant.components.ista_ecotrend.PLATFORMS",
+        [],
+    ):
+        mock_ista.get_consumption_data.side_effect = ServerError
+        ista_config_entry.add_to_hass(hass)
+        await hass.config_entries.async_setup(ista_config_entry.entry_id)
+        await hass.async_block_till_done()
+
+        assert ista_config_entry.state is ConfigEntryState.SETUP_RETRY
+
+
+async def test_auth_failed(
+    hass: HomeAssistant, ista_config_entry: MockConfigEntry, mock_ista: MagicMock
+) -> None:
+    """Test coordinator auth failed and reauth flow started."""
+    with patch(
+        "homeassistant.components.ista_ecotrend.PLATFORMS",
+        [],
+    ):
+        mock_ista.get_consumption_data.side_effect = LoginError
+        ista_config_entry.add_to_hass(hass)
+        await hass.config_entries.async_setup(ista_config_entry.entry_id)
+        await hass.async_block_till_done()
+
+        assert ista_config_entry.state is ConfigEntryState.SETUP_ERROR
+
+        flows = hass.config_entries.flow.async_progress()
+        assert len(flows) == 1
+
+        flow = flows[0]
+        assert flow.get("step_id") == "reauth_confirm"
+        assert flow.get("handler") == DOMAIN
+
+        assert "context" in flow
+        assert flow["context"].get("source") == SOURCE_REAUTH
+        assert flow["context"].get("entry_id") == ista_config_entry.entry_id