OSD-25868: Adds aws-hosted-cp as a valid Platform name (#275)

* OSD-25868: Adds `aws-hosted-cp` as a valid Platform name
This extends the Platform structs to accept `aws-hosted-cp` as a valid value for looking up
AWSHCP `ByName()`. This value is used internally still and blocks integrating the updated
verifier.

* Handle empty string lookups as an error

pkg/data/cloud/platform.go

@@ -8,25 +8,25 @@ import (
 
 // Platform type represents specific Platform types and how they map to their respective platforms.
 type Platform struct {
-	// names holds 2 unique lowercase names of the Platform (e.g., "aws"). We use a fixed-
-	// size array so that this struct remains comparable. Any of the 2 values can be used to refer
+	// names holds 3 unique lowercase names of the Platform (e.g., "aws"). We use a fixed-
+	// size array so that this struct remains comparable. Any of the 3 values can be used to refer
 	// to this specific Platform via Platform.ByName(), but only the first (element
 	// 0) element will be the "preferred name" returned by Platform.String()
-	names [2]string
+	names [3]string
 }
 
 var (
 	AWSClassic = Platform{
-		names: [2]string{"aws-classic", "aws"},
+		names: [3]string{"aws-classic", "aws"},
 	}
 	AWSHCP = Platform{
-		names: [2]string{"aws-hcp", "hostedcluster"},
+		names: [3]string{"aws-hcp", "aws-hosted-cp", "hostedcluster"},
 	}
 	AWSHCPZeroEgress = Platform{
-		names: [2]string{"aws-hcp-zeroegress"},
+		names: [3]string{"aws-hcp-zeroegress"},
 	}
 	GCPClassic = Platform{
-		names: [2]string{"gcp-classic", "gcp"},
+		names: [3]string{"gcp-classic", "gcp"},
 	}
 )
 
@@ -40,6 +40,11 @@ func (plat Platform) String() string {
 // platform if the provided name isn't supported
 func ByName(name string) (Platform, error) {
 	normalizedName := strings.TrimSpace(strings.ToLower(name))
+
+	if normalizedName == "" {
+		return Platform{}, fmt.Errorf("attempted to lookup Platform with empty string")
+	}
+
 	if slices.Contains(AWSClassic.names[:], normalizedName) {
 		return AWSClassic, nil
 	}

pkg/data/cloud/platform_test.go

@@ -59,7 +59,7 @@ func TestPlatform_String(t *testing.T) {
 
 func TestPlatform_IsValid(t *testing.T) {
 	type fields struct {
-		names [2]string
+		names [3]string
 	}
 	tests := []struct {
 		name   string
@@ -84,7 +84,7 @@ func TestPlatform_IsValid(t *testing.T) {
 		{
 			name: "fake platform",
 			fields: fields{
-				names: [2]string{"foo", "bar"},
+				names: [3]string{"foo", "bar"},
 			},
 			want: false,
 		},
@@ -123,6 +123,10 @@ func TestByName(t *testing.T) {
 			name: "aws-hcp",
 			want: AWSHCP,
 		},
+		{
+			name: "aws-hosted-cp",
+			want: AWSHCP,
+		},
 		{
 			name: "hostedcluster",
 			want: AWSHCP,
@@ -139,6 +143,10 @@ func TestByName(t *testing.T) {
 			name: "invalid name",
 			want: Platform{},
 		},
+		{
+			name: "",
+			want: Platform{},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {