add missing basket examples

schema_salad/tests/basket.yml

@@ -0,0 +1,9 @@
+basket:
+  - product: bananas
+    price: 0.39
+    per: pound
+    weight: 1
+  - product: cucumbers
+    price: 0.79
+    per: item
+    count: 3

schema_salad/tests/basket_schema.yml

@@ -0,0 +1,52 @@
+- name: Product
+  doc: |
+    The base type for a product.  This is an abstract type, so it
+    can't be used directly, but can be used to define other types.
+  type: record
+  abstract: true
+  fields:
+    product: string
+    price: float
+
+- name: ByWeight
+  doc: |
+    A product, sold by weight.  Products may be sold by pound or by
+    kilogram.  Weights may be fractional.
+  type: record
+  extends: Product
+  fields:
+    per:
+      type:
+        type: enum
+        symbols:
+          - pound
+          - kilogram
+      jsonldPredicate: "#per"
+    weight: float
+
+- name: ByCount
+  doc: |
+    A product, sold by count.  The count must be a integer value.
+  type: record
+  extends: Product
+  fields:
+    per:
+      type:
+        type: enum
+        symbols:
+          - item
+      jsonldPredicate: "#per"
+    count: int
+
+- name: Basket
+  doc: |
+    A basket of products.  The 'documentRoot' field indicates it is a
+    valid starting point for a document.  The 'basket' field will
+    validate subtypes of 'Product' (ByWeight and ByCount).
+  type: record
+  documentRoot: true
+  fields:
+    basket:
+      type:
+        type: array
+        items: Product