test: purl in productinfo (#4476)

fixes #4186

Adds unit tests for the ProductInfo class and functions.

Signed-off-by: Aryan Bakliwal <[email protected]>

Author: AryanBakliwal

test/test_util.py

@@ -77,3 +77,88 @@ def test_cve_scanner(self):
         assert (
             instance_attrs["all_cve_data"] == DefaultDict[ProductInfo, CVEData]
         ), "Type of all_cve_data has been changed. Make sure it isn't breaking OutputEngine!"
+
+
+class TestProductInfo:
+    """Tests the ProductInfo class and functions"""
+
+    def test_product_info_with_purl(self):
+        vendor = "vendor_name"
+        product = "product_name"
+        version = "1.0.0"
+        location = "location/to/product"
+        purl = "pkg:type/namespace/product@version"
+
+        product_info = ProductInfo(
+            vendor=vendor,
+            product=product,
+            version=version,
+            location=location,
+            purl=purl,
+        )
+
+        assert product_info.vendor == vendor
+        assert product_info.product == product
+        assert product_info.version == version
+        assert product_info.location == location
+        assert product_info.purl == purl
+
+    def test_product_info_without_purl(self):
+        vendor = "vendor_name"
+        product = "product_name"
+        version = "1.0.0"
+        location = "location/to/product"
+
+        product_info = ProductInfo(
+            vendor=vendor, product=product, version=version, location=location
+        )
+
+        assert product_info.vendor == vendor
+        assert product_info.product == product
+        assert product_info.version == version
+        assert product_info.location == location
+        assert product_info.purl is None
+
+    def test_product_info_equality(self):
+        vendor = "vendor_name"
+        product = "product_name"
+        version = "1.0.0"
+        location_1 = "location/to/product"
+        location_2 = "different/location/to/product"
+        purl = "pkg:type/namespace/product@version"
+
+        product_info_1 = ProductInfo(
+            vendor=vendor,
+            product=product,
+            version=version,
+            location=location_1,
+            purl=purl,
+        )
+        product_info_2 = ProductInfo(
+            vendor=vendor, product=product, version=version, location=location_2
+        )
+
+        assert (
+            product_info_1 == product_info_2
+        )  # Should be equal based on vendor, product, version
+
+    def test_product_info_hashing(self):
+        vendor = "vendor_name"
+        product = "product_name"
+        version = "1.0.0"
+        location_1 = "location/to/product"
+        location_2 = "different/location/to/product"
+        purl = "pkg:type/namespace/product@version"
+
+        product_info_1 = ProductInfo(
+            vendor=vendor,
+            product=product,
+            version=version,
+            location=location_1,
+            purl=purl,
+        )
+        product_info_2 = ProductInfo(
+            vendor=vendor, product=product, version=version, location=location_2
+        )
+
+        assert hash(product_info_1) == hash(product_info_2)  # Hashes should be the same