Add Min/Max functions

Author: bkeepers

lib/flipper/expressions/max.rb

@@ -0,0 +1,11 @@
+require "flipper/expression"
+
+module Flipper
+  module Expressions
+    class Max
+      def self.call(*args)
+        args.max
+      end
+    end
+  end
+end

lib/flipper/expressions/min.rb

@@ -0,0 +1,11 @@
+require "flipper/expression"
+
+module Flipper
+  module Expressions
+    class Min
+      def self.call(*args)
+        args.min
+      end
+    end
+  end
+end

packages/expressions/schemas/Max.schema.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://www.flippercloud.io/expressions/Max.schema.json",
+  "title": "Max",
+  "$ref": "schema.json#/$defs/arguments(n)"
+}

packages/expressions/schemas/Min.schema.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://www.flippercloud.io/expressions/Min.schema.json",
+  "title": "Min",
+  "$ref": "schema.json#/$defs/arguments(n)"
+}

packages/expressions/schemas/schema.json

@@ -29,6 +29,8 @@
         "GreaterThanOrEqualTo": { "$ref": "GreaterThanOrEqualTo.schema.json" },
         "LessThan": { "$ref": "LessThan.schema.json" },
         "LessThanOrEqualTo": { "$ref": "LessThanOrEqualTo.schema.json" },
+        "Max": { "$ref": "Max.schema.json" },
+        "Min": { "$ref": "Min.schema.json" },
         "NotEqual": { "$ref": "NotEqual.schema.json" },
         "Now": { "$ref": "Now.schema.json" },
         "Number": { "$ref": "Number.schema.json" },

packages/expressions/test/examples/Max.json

@@ -0,0 +1,32 @@
+{
+  "valid": [
+    {
+      "expression": { "Max": [] },
+      "result": { "enum": [null] }
+    },
+    {
+      "expression": { "Max": [3, 2, 1] },
+      "result": { "enum": [3] }
+    },
+    {
+      "expression": { "Max": [0.1, 0.2] },
+      "result": { "enum": [0.2] }
+    },
+    {
+      "expression": { "Max": ["a", "b"] },
+      "result": { "enum": ["b"] }
+    },
+    {
+      "expression": { "Max": 100 },
+      "result": { "enum": [100] }
+    },
+    {
+      "expression": { "Max": [{ "Number": "2" }, { "Number": "1" }] },
+      "result": { "enum": [2] }
+    }
+  ],
+  "invalid": [
+    { "Max": null },
+    { "Max": [], "Any": [] }
+  ]
+}

packages/expressions/test/examples/Min.json

@@ -0,0 +1,32 @@
+{
+  "valid": [
+    {
+      "expression": { "Min": [] },
+      "result": { "enum": [null] }
+    },
+    {
+      "expression": { "Min": [3, 2, 1] },
+      "result": { "enum": [1] }
+    },
+    {
+      "expression": { "Min": [0.1, 0.2] },
+      "result": { "enum": [0.1] }
+    },
+    {
+      "expression": { "Min": ["a", "b"] },
+      "result": { "enum": ["a"] }
+    },
+    {
+      "expression": { "Min": 100 },
+      "result": { "enum": [100] }
+    },
+    {
+      "expression": { "Min": [{ "Number": "2" }, { "Number": "1" }] },
+      "result": { "enum": [1] }
+    }
+  ],
+  "invalid": [
+    { "Min": null },
+    { "Min": [], "Any": [] }
+  ]
+}