Codify instance type names

provider/cmd/pulumi-resource-aws/schema.json

@@ -39645,7 +39645,7 @@
                     "value": "m5ad.large"
                 },
                 {
-                    "name": "M5as_XLarge",
+                    "name": "M5ad_XLarge",
                     "value": "m5ad.xlarge"
                 },
                 {
@@ -40687,6 +40687,11 @@
                     "name": "Hs1_8XLarge",
                     "value": "hs1.8xlarge",
                     "deprecationMessage": "This instancetype has been deprecated"
+                },
+                {
+                    "name": "M5as_XLarge",
+                    "value": "m5ad.xlarge",
+                    "deprecationMessage": "Has a typo, use M5ad_XLarge instead"
                 }
             ]
         },

provider/enum_test.go

@@ -0,0 +1,46 @@
+// Copyright 2016-2024, Pulumi Corporation.
+
+package provider
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestInstanceTypeName(t *testing.T) {
+	type testCase struct {
+		Value string
+		Name  string
+	}
+
+	testCases := []testCase{
+		{Name: "A1_2XLarge", Value: "a1.2xlarge"},
+		{Name: "A1_Metal", Value: "a1.metal"},
+		{Name: "C6a_Large", Value: "c6a.large"},
+		{Name: "C7g_Medium", Value: "c7g.medium"},
+		{Name: "M1_Small", Value: "m1.small"},
+		{Name: "M7a_Metal", Value: "m7a.metal-48xl"},
+		{Name: "T1_Micro", Value: "t1.micro"},
+		{Name: "T2_Nano", Value: "t2.nano"},
+	}
+
+	for _, tc := range testCases {
+		actual, err := instanceTypeName(tc.Value)
+		assert.NoError(t, err)
+		assert.Equal(t, tc.Name, actual)
+	}
+}
+
+func TestInstanceTypeNameErr(t *testing.T) {
+	testCases := []string{
+		"a1.metal.pc",
+		"m7a.metal-96xl",
+	}
+
+	for _, tc := range testCases {
+		actual, err := instanceTypeName(tc)
+		assert.Error(t, err)
+		assert.Equal(t, "", actual)
+	}
+}