added tests

tests/functional/metrics/fixtures.py

@@ -626,3 +626,42 @@
     meta:
         my_meta: 'testing'
 """
+
+conversion_semantic_model_purchasing_yml = """
+version: 2
+
+semantic_models:
+  - name: semantic_purchasing
+    model: ref('purchasing')
+    measures:
+      - name: num_orders
+        agg: COUNT
+        expr: purchased_at
+      - name: num_visits
+        agg: SUM
+        expr: 1
+    dimensions:
+      - name: purchased_at
+        type: TIME
+    entities:
+      - name: purchase
+        type: primary
+        expr: '1'
+    defaults:
+      agg_time_dimension: purchased_at
+
+"""
+
+conversion_metric_yml = """
+version: 2
+metrics:
+    - name: converted_orders_over_visits
+      label: Number of orders converted from visits
+      type: conversion
+      type_params:
+        conversion_type_params:
+          base_measure: num_visits
+          conversion_measure: num_orders
+          entity: purchase
+          calculation: conversion_rate
+"""

tests/functional/metrics/test_metrics.py

@@ -7,6 +7,8 @@
 
 
 from tests.functional.metrics.fixtures import (
+    conversion_semantic_model_purchasing_yml,
+    conversion_metric_yml,
     mock_purchase_data_csv,
     models_people_sql,
     models_people_metrics_yml,
@@ -339,3 +341,61 @@ def test_simple_metric(
         # initial run
         with pytest.raises(ParsingError):
             run_dbt(["run"])
+
+
+class TestConversionMetric:
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "purchasing.sql": purchasing_model_sql,
+            "metricflow_time_spine.sql": metricflow_time_spine_sql,
+            "semantic_models.yml": conversion_semantic_model_purchasing_yml,
+            "conversion_metric.yml": conversion_metric_yml,
+        }
+
+    @pytest.fixture(scope="class")
+    def seeds(self):
+        return {
+            "mock_purchase_data.csv": mock_purchase_data_csv,
+        }
+
+    def test_conversion_metric(
+        self,
+        project,
+    ):
+        # initial parse
+        runner = dbtRunner()
+        result = runner.invoke(["parse"])
+        assert result.success
+        assert isinstance(result.result, Manifest)
+
+        # make sure the metric is in the manifest
+        manifest = get_manifest(project.project_root)
+        metric_ids = list(manifest.metrics.keys())
+        expected_metric_ids = [
+            "metric.test.converted_orders_over_visits",
+        ]
+        assert metric_ids == expected_metric_ids
+        assert manifest.metrics[
+            "metric.test.converted_orders_over_visits"
+        ].type_params.conversion_type_params
+        assert (
+            len(
+                manifest.metrics[
+                    "metric.test.converted_orders_over_visits"
+                ].type_params.input_measures
+            )
+            == 2
+        )
+        assert (
+            manifest.metrics[
+                "metric.test.converted_orders_over_visits"
+            ].type_params.conversion_type_params.window
+            is None
+        )
+        assert (
+            manifest.metrics[
+                "metric.test.converted_orders_over_visits"
+            ].type_params.conversion_type_params.entity
+            == "purchase"
+        )

tests/unit/test_semantic_layer_nodes_satisfy_protocols.py

@@ -2,6 +2,8 @@
 import copy
 
 from dbt.contracts.graph.nodes import (
+    ConstantPropertyInput,
+    ConversionTypeParams,
     Metric,
     MetricInput,
     MetricInputMeasure,
@@ -233,6 +235,21 @@ def complex_metric_input_measure(where_filter) -> MetricInputMeasure:
     )
 
 
+@pytest.fixture(scope="session")
+def conversion_type_params(
+    simple_metric_input_measure, metric_time_window
+) -> ConversionTypeParams:
+    return ConversionTypeParams(
+        base_measure=simple_metric_input_measure,
+        conversion_measure=simple_metric_input_measure,
+        entity="entity",
+        window=metric_time_window,
+        constant_properties=[
+            ConstantPropertyInput(base_property="base", conversion_property="conversion")
+        ],
+    )
+
+
 @pytest.fixture(scope="session")
 def complex_metric_type_params(
     metric_time_window, simple_metric_input, simple_metric_input_measure
@@ -245,6 +262,7 @@ def complex_metric_type_params(
         window=metric_time_window,
         grain_to_date=TimeGranularity.DAY,
         metrics=[simple_metric_input],
+        conversion_type_params=conversion_type_params,
     )