feat: Improve validation messages for coder_parameter (#85)

Author: mtojek

examples/resources/coder_parameter/resource.tf

@@ -1,43 +1,43 @@
 data "coder_parameter" "example" {
-  display_name = "Region"
-  description  = "Specify a region to place your workspace."
-  immutable    = true
-  type         = "string"
+  name        = "Region"
+  description = "Specify a region to place your workspace."
+  mutable     = false
+  type        = "string"
   option {
     value = "us-central1-a"
-    label = "US Central"
+    name  = "US Central"
     icon  = "/icon/usa.svg"
   }
   option {
     value = "asia-central1-a"
-    label = "Asia"
+    name  = "Asia"
     icon  = "/icon/asia.svg"
   }
 }
 
 data "coder_parameter" "ami" {
-  display_name = "Machine Image"
+  name = "Machine Image"
   option {
     value = "ami-xxxxxxxx"
-    label = "Ubuntu"
+    name  = "Ubuntu"
     icon  = "/icon/ubuntu.svg"
   }
 }
 
-data "coder_parameter" "image" {
-  display_name = "Docker Image"
-  icon         = "/icon/docker.svg"
-  type         = "bool"
+data "coder_parameter" "is_public_instance" {
+  name = "Is public instance?"
+  icon = "/icon/docker.svg"
+  type = "bool"
 }
 
 data "coder_parameter" "cores" {
-  display_name = "CPU Cores"
-  icon         = "/icon/"
+  name = "CPU Cores"
+  icon = "/icon/"
 }
 
 data "coder_parameter" "disk_size" {
-  display_name = "Disk Size"
-  type         = "number"
+  name = "Disk Size"
+  type = "number"
   validation {
     # This can apply to number and string types.
     min = 0

provider/parameter.go

@@ -288,6 +288,9 @@ func (v *Validation) Valid(typ, value string) error {
 	}
 	switch typ {
 	case "bool":
+		if value != "true" && value != "false" {
+			return fmt.Errorf(`boolean value can be either "true" or "false"`)
+		}
 		return nil
 	case "string":
 		if v.Regex == "" {
@@ -307,13 +310,13 @@ func (v *Validation) Valid(typ, value string) error {
 	case "number":
 		num, err := strconv.Atoi(value)
 		if err != nil {
-			return fmt.Errorf("parse value %s as int: %s", value, err)
+			return fmt.Errorf("value %q is not a number", value)
 		}
 		if num < v.Min {
-			return fmt.Errorf("provided value %d is less than the minimum %d", num, v.Min)
+			return fmt.Errorf("value %d is less than the minimum %d", num, v.Min)
 		}
 		if num > v.Max {
-			return fmt.Errorf("provided value %d is more than the maximum %d", num, v.Max)
+			return fmt.Errorf("value %d is more than the maximum %d", num, v.Max)
 		}
 	}
 	return nil

provider/parameter_test.go

@@ -294,7 +294,7 @@ func TestValueValidatesType(t *testing.T) {
 		Name:  "InvalidNumber",
 		Type:  "number",
 		Value: "hi",
-		Error: regexp.MustCompile("parse value hi as int"),
+		Error: regexp.MustCompile("is not a number"),
 	}, {
 		Name:  "NumberBelowMin",
 		Type:  "number",
@@ -307,6 +307,11 @@ func TestValueValidatesType(t *testing.T) {
 		Value: "1",
 		Max:   0,
 		Error: regexp.MustCompile("is more than the maximum"),
+	}, {
+		Name:  "InvalidBool",
+		Type:  "bool",
+		Value: "cat",
+		Error: regexp.MustCompile("boolean value can be either"),
 	}} {
 		tc := tc
 		t.Run(tc.Name, func(t *testing.T) {
@@ -318,7 +323,7 @@ func TestValueValidatesType(t *testing.T) {
 			}
 			err := v.Valid(tc.Type, tc.Value)
 			if tc.Error != nil {
-				require.True(t, tc.Error.MatchString(err.Error()))
+				require.True(t, tc.Error.MatchString(err.Error()), "got: %s", err.Error())
 			}
 		})
 	}