Adding Provider-Defined Function Testing

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/hashicorp/terraform-plugin-go v0.22.0
 	github.com/hashicorp/terraform-plugin-mux v0.15.0
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.33.0
-	github.com/hashicorp/terraform-plugin-testing v1.6.0
+	github.com/hashicorp/terraform-plugin-testing v1.7.0
 )
 
 require (
@@ -26,15 +26,15 @@ require (
 	github.com/hashicorp/go-checkpoint v0.5.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
 	github.com/hashicorp/go-cty v1.4.1-0.20200414143053-d3edf31b6320 // indirect
-	github.com/hashicorp/go-hclog v1.5.0 // indirect
+	github.com/hashicorp/go-hclog v1.6.2 // indirect
 	github.com/hashicorp/go-immutable-radix v1.3.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/hashicorp/go-plugin v1.6.0 // indirect
 	github.com/hashicorp/go-uuid v1.0.3 // indirect
 	github.com/hashicorp/go-version v1.6.0 // indirect
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/hashicorp/hc-install v0.6.3 // indirect
-	github.com/hashicorp/hcl/v2 v2.19.1 // indirect
+	github.com/hashicorp/hcl/v2 v2.20.0 // indirect
 	github.com/hashicorp/logutils v1.0.0 // indirect
 	github.com/hashicorp/terraform-exec v0.20.0 // indirect
 	github.com/hashicorp/terraform-json v0.21.0 // indirect
@@ -53,13 +53,13 @@ require (
 	github.com/vmihailenco/msgpack v4.0.4+incompatible // indirect
 	github.com/vmihailenco/msgpack/v5 v5.4.1 // indirect
 	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
-	github.com/zclconf/go-cty v1.14.2 // indirect
-	golang.org/x/crypto v0.19.0 // indirect
-	golang.org/x/exp v0.0.0-20230809150735-7b3493d9a819 // indirect
+	github.com/zclconf/go-cty v1.14.3 // indirect
+	golang.org/x/crypto v0.21.0 // indirect
 	golang.org/x/mod v0.15.0 // indirect
-	golang.org/x/net v0.20.0 // indirect
-	golang.org/x/sys v0.17.0 // indirect
+	golang.org/x/net v0.21.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/tools v0.13.0 // indirect
 	google.golang.org/appengine v1.6.8 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240123012728-ef4313101c80 // indirect
 	google.golang.org/grpc v1.62.0 // indirect

go.sum

@@ -51,8 +51,8 @@ github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9n
 github.com/hashicorp/go-cleanhttp v0.5.2/go.mod h1:kO/YDlP8L1346E6Sodw+PrpBSV4/SoxCXGY6BqNFT48=
 github.com/hashicorp/go-cty v1.4.1-0.20200414143053-d3edf31b6320 h1:1/D3zfFHttUKaCaGKZ/dR2roBXv0vKbSCnssIldfQdI=
 github.com/hashicorp/go-cty v1.4.1-0.20200414143053-d3edf31b6320/go.mod h1:EiZBMaudVLy8fmjf9Npq1dq9RalhveqZG5w/yz3mHWs=
-github.com/hashicorp/go-hclog v1.5.0 h1:bI2ocEMgcVlz55Oj1xZNBsVi900c7II+fWDyV9o+13c=
-github.com/hashicorp/go-hclog v1.5.0/go.mod h1:W4Qnvbt70Wk/zYJryRzDRU/4r0kIg0PVHBcfoyhpF5M=
+github.com/hashicorp/go-hclog v1.6.2 h1:NOtoftovWkDheyUM/8JW3QMiXyxJK3uHRK7wV04nD2I=
+github.com/hashicorp/go-hclog v1.6.2/go.mod h1:W4Qnvbt70Wk/zYJryRzDRU/4r0kIg0PVHBcfoyhpF5M=
 github.com/hashicorp/go-immutable-radix v1.3.0 h1:8exGP7ego3OmkfksihtSouGMZ+hQrhxx+FVELeXpVPE=
 github.com/hashicorp/go-immutable-radix v1.3.0/go.mod h1:0y9vanUI8NX6FsYoO3zeMjhV/C5i9g4Q3DwcSNZ4P60=
 github.com/hashicorp/go-memdb v1.3.4 h1:XSL3NR682X/cVk2IeV0d70N4DZ9ljI885xAEU8IoK3c=
@@ -71,8 +71,8 @@ github.com/hashicorp/golang-lru v0.5.4 h1:YDjusn29QI/Das2iO9M0BHnIbxPeyuCHsjMW+l
 github.com/hashicorp/golang-lru v0.5.4/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/hashicorp/hc-install v0.6.3 h1:yE/r1yJvWbtrJ0STwScgEnCanb0U9v7zp0Gbkmcoxqs=
 github.com/hashicorp/hc-install v0.6.3/go.mod h1:KamGdbodYzlufbWh4r9NRo8y6GLHWZP2GBtdnms1Ln0=
-github.com/hashicorp/hcl/v2 v2.19.1 h1://i05Jqznmb2EXqa39Nsvyan2o5XyMowW5fnCKW5RPI=
-github.com/hashicorp/hcl/v2 v2.19.1/go.mod h1:ThLC89FV4p9MPW804KVbe/cEXoQ8NZEh+JtMeeGErHE=
+github.com/hashicorp/hcl/v2 v2.20.0 h1:l++cRs/5jQOiKVvqXZm/P1ZEfVXJmvLS9WSVxkaeTb4=
+github.com/hashicorp/hcl/v2 v2.20.0/go.mod h1:WmcD/Ym72MDOOx5F62Ly+leloeu6H7m0pG7VBiU6pQk=
 github.com/hashicorp/logutils v1.0.0 h1:dLEQVugN8vlakKOUE3ihGLTZJRB4j+M2cdTm/ORI65Y=
 github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO+LraFDTW64=
 github.com/hashicorp/terraform-exec v0.20.0 h1:DIZnPsqzPGuUnq6cH8jWcPunBfY+C+M8JyYF3vpnuEo=
@@ -91,8 +91,8 @@ github.com/hashicorp/terraform-plugin-mux v0.15.0 h1:+/+lDx0WUsIOpkAmdwBIoFU8UP9
 github.com/hashicorp/terraform-plugin-mux v0.15.0/go.mod h1:9ezplb1Dyq394zQ+ldB0nvy/qbNAz3mMoHHseMTMaKo=
 github.com/hashicorp/terraform-plugin-sdk/v2 v2.33.0 h1:qHprzXy/As0rxedphECBEQAh3R4yp6pKksKHcqZx5G8=
 github.com/hashicorp/terraform-plugin-sdk/v2 v2.33.0/go.mod h1:H+8tjs9TjV2w57QFVSMBQacf8k/E1XwLXGCARgViC6A=
-github.com/hashicorp/terraform-plugin-testing v1.6.0 h1:Wsnfh+7XSVRfwcr2jZYHsnLOnZl7UeaOBvsx6dl/608=
-github.com/hashicorp/terraform-plugin-testing v1.6.0/go.mod h1:cJGG0/8j9XhHaJZRC+0sXFI4uzqQZ9Az4vh6C4GJpFE=
+github.com/hashicorp/terraform-plugin-testing v1.7.0 h1:I6aeCyZ30z4NiI3tzyDoO6fS7YxP5xSL1ceOon3gTe8=
+github.com/hashicorp/terraform-plugin-testing v1.7.0/go.mod h1:sbAreCleJNOCz+y5vVHV8EJkIWZKi/t4ndKiUjM9vao=
 github.com/hashicorp/terraform-registry-address v0.2.3 h1:2TAiKJ1A3MAkZlH1YI/aTVcLZRu7JseiXNRHbOAyoTI=
 github.com/hashicorp/terraform-registry-address v0.2.3/go.mod h1:lFHA76T8jfQteVfT7caREqguFrW3c4MFSPhZB7HHgUM=
 github.com/hashicorp/terraform-svchost v0.1.1 h1:EZZimZ1GxdqFRinZ1tpJwVxxt49xc/S52uzrw4x0jKQ=
@@ -154,26 +154,26 @@ github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV
 github.com/xanzy/ssh-agent v0.3.3 h1:+/15pJfg/RsTxqYcX6fHqOXZwwMP+2VyYWJeWM2qQFM=
 github.com/xanzy/ssh-agent v0.3.3/go.mod h1:6dzNDKs0J9rVPHPhaGCukekBHKqfl+L3KghI1Bc68Uw=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-github.com/zclconf/go-cty v1.14.2 h1:kTG7lqmBou0Zkx35r6HJHUQTvaRPr5bIAf3AoHS0izI=
-github.com/zclconf/go-cty v1.14.2/go.mod h1:VvMs5i0vgZdhYawQNq5kePSpLAoz8u1xvZgrPIxfnZE=
+github.com/zclconf/go-cty v1.14.3 h1:1JXy1XroaGrzZuG6X9dt7HL6s9AwbY+l4UNL8o5B6ho=
+github.com/zclconf/go-cty v1.14.3/go.mod h1:VvMs5i0vgZdhYawQNq5kePSpLAoz8u1xvZgrPIxfnZE=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.19.0 h1:ENy+Az/9Y1vSrlrvBSyna3PITt4tiZLf7sgCjZBX7Wo=
-golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
-golang.org/x/exp v0.0.0-20230809150735-7b3493d9a819 h1:EDuYyU/MkFXllv9QF9819VlI9a4tzGuCbhG0ExK9o1U=
-golang.org/x/exp v0.0.0-20230809150735-7b3493d9a819/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
+golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=
+golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.15.0 h1:SernR4v+D55NyBH2QiEQrlBAnj1ECL6AGrA5+dPaMY8=
 golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.20.0 h1:aCL9BSgETF1k+blQaYUBx9hJ9LOGP3gAVemcZlf1Kpo=
-golang.org/x/net v0.20.0/go.mod h1:z8BVo6PvndSri0LbOE3hAn0apkU+1YvI6E70E9jsnvY=
+golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -186,8 +186,8 @@ golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
-golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
+golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

internal/framework5provider/bool_function.go

@@ -0,0 +1,39 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
+package framework
+
+import (
+	"context"
+
+	"github.com/hashicorp/terraform-plugin-framework/function"
+)
+
+var _ function.Function = BoolFunction{}
+
+func NewBoolFunction() function.Function {
+	return &BoolFunction{}
+}
+
+type BoolFunction struct{}
+
+func (f BoolFunction) Metadata(ctx context.Context, req function.MetadataRequest, resp *function.MetadataResponse) {
+	resp.Name = "bool"
+}
+
+func (f BoolFunction) Definition(ctx context.Context, req function.DefinitionRequest, resp *function.DefinitionResponse) {
+	resp.Definition = function.Definition{
+		Parameters: []function.Parameter{
+			function.BoolParameter{},
+		},
+		Return: function.BoolReturn{},
+	}
+}
+
+func (f BoolFunction) Run(ctx context.Context, req function.RunRequest, resp *function.RunResponse) {
+	var arg bool
+
+	resp.Error = req.Arguments.Get(ctx, &arg)
+
+	resp.Error = function.ConcatFuncErrors(resp.Error, resp.Result.Set(ctx, arg))
+}

internal/framework5provider/bool_function_test.go

@@ -0,0 +1,90 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
+package framework
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-framework/providerserver"
+	"github.com/hashicorp/terraform-plugin-go/tfprotov5"
+	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
+	"github.com/hashicorp/terraform-plugin-testing/knownvalue"
+	"github.com/hashicorp/terraform-plugin-testing/plancheck"
+	"github.com/hashicorp/terraform-plugin-testing/statecheck"
+	"github.com/hashicorp/terraform-plugin-testing/tfversion"
+)
+
+func TestBoolFunction_known(t *testing.T) {
+	resource.UnitTest(t, resource.TestCase{
+		TerraformVersionChecks: []tfversion.TerraformVersionCheck{
+			tfversion.SkipBelow(tfversion.Version1_8_0),
+		},
+		ProtoV5ProviderFactories: map[string]func() (tfprotov5.ProviderServer, error){
+			"framework": providerserver.NewProtocol5WithError(New()),
+		},
+		Steps: []resource.TestStep{
+			{
+				Config: `
+				output "test" {
+					value = provider::framework::bool(true)
+				}`,
+				ConfigStateChecks: []statecheck.StateCheck{
+					statecheck.ExpectKnownOutputValue("test", knownvalue.Bool(true)),
+				},
+			},
+		},
+	})
+}
+
+func TestBoolFunction_null(t *testing.T) {
+	resource.UnitTest(t, resource.TestCase{
+		TerraformVersionChecks: []tfversion.TerraformVersionCheck{
+			tfversion.SkipBelow(tfversion.Version1_8_0),
+		},
+		ProtoV5ProviderFactories: map[string]func() (tfprotov5.ProviderServer, error){
+			"framework": providerserver.NewProtocol5WithError(New()),
+		},
+		Steps: []resource.TestStep{
+			{
+				Config: `
+				output "test" {
+					value = provider::framework::bool(null)
+				}`,
+				ExpectError: regexp.MustCompile("Invalid function argument"),
+			},
+		},
+	})
+}
+
+func TestBoolFunction_unknown(t *testing.T) {
+	resource.UnitTest(t, resource.TestCase{
+		TerraformVersionChecks: []tfversion.TerraformVersionCheck{
+			tfversion.SkipBelow(tfversion.Version1_8_0),
+		},
+		ProtoV5ProviderFactories: map[string]func() (tfprotov5.ProviderServer, error){
+			"framework": providerserver.NewProtocol5WithError(New()),
+		},
+		Steps: []resource.TestStep{
+			{
+				Config: `
+				resource "terraform_data" "test" {
+					input = provider::framework::bool(true)
+				}
+
+				output "test" {
+					value = terraform_data.test.output
+				}`,
+				ConfigPlanChecks: resource.ConfigPlanChecks{
+					PreApply: []plancheck.PlanCheck{
+						plancheck.ExpectUnknownOutputValue("test"),
+					},
+				},
+				ConfigStateChecks: []statecheck.StateCheck{
+					statecheck.ExpectKnownOutputValue("test", knownvalue.Bool(true)),
+				},
+			},
+		},
+	})
+}

internal/framework5provider/float64_function.go

@@ -0,0 +1,39 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
+package framework
+
+import (
+	"context"
+
+	"github.com/hashicorp/terraform-plugin-framework/function"
+)
+
+var _ function.Function = Float64Function{}
+
+func NewFloat64Function() function.Function {
+	return &Float64Function{}
+}
+
+type Float64Function struct{}
+
+func (f Float64Function) Metadata(ctx context.Context, req function.MetadataRequest, resp *function.MetadataResponse) {
+	resp.Name = "float64"
+}
+
+func (f Float64Function) Definition(ctx context.Context, req function.DefinitionRequest, resp *function.DefinitionResponse) {
+	resp.Definition = function.Definition{
+		Parameters: []function.Parameter{
+			function.Float64Parameter{},
+		},
+		Return: function.Float64Return{},
+	}
+}
+
+func (f Float64Function) Run(ctx context.Context, req function.RunRequest, resp *function.RunResponse) {
+	var arg float64
+
+	resp.Error = req.Arguments.Get(ctx, &arg)
+
+	resp.Error = function.ConcatFuncErrors(resp.Error, resp.Result.Set(ctx, arg))
+}

internal/framework5provider/float64_function_test.go

@@ -0,0 +1,90 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
+package framework
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-framework/providerserver"
+	"github.com/hashicorp/terraform-plugin-go/tfprotov5"
+	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
+	"github.com/hashicorp/terraform-plugin-testing/knownvalue"
+	"github.com/hashicorp/terraform-plugin-testing/plancheck"
+	"github.com/hashicorp/terraform-plugin-testing/statecheck"
+	"github.com/hashicorp/terraform-plugin-testing/tfversion"
+)
+
+func TestFloat64Function_known(t *testing.T) {
+	resource.UnitTest(t, resource.TestCase{
+		TerraformVersionChecks: []tfversion.TerraformVersionCheck{
+			tfversion.SkipBelow(tfversion.Version1_8_0),
+		},
+		ProtoV5ProviderFactories: map[string]func() (tfprotov5.ProviderServer, error){
+			"framework": providerserver.NewProtocol5WithError(New()),
+		},
+		Steps: []resource.TestStep{
+			{
+				Config: `
+				output "test" {
+					value = provider::framework::float64(1.23)
+				}`,
+				ConfigStateChecks: []statecheck.StateCheck{
+					statecheck.ExpectKnownOutputValue("test", knownvalue.Float64Exact(1.23)),
+				},
+			},
+		},
+	})
+}
+
+func TestFloat64Function_null(t *testing.T) {
+	resource.UnitTest(t, resource.TestCase{
+		TerraformVersionChecks: []tfversion.TerraformVersionCheck{
+			tfversion.SkipBelow(tfversion.Version1_8_0),
+		},
+		ProtoV5ProviderFactories: map[string]func() (tfprotov5.ProviderServer, error){
+			"framework": providerserver.NewProtocol5WithError(New()),
+		},
+		Steps: []resource.TestStep{
+			{
+				Config: `
+				output "test" {
+					value = provider::framework::float64(null)
+				}`,
+				ExpectError: regexp.MustCompile("Invalid function argument"),
+			},
+		},
+	})
+}
+
+func TestFloat64Function_unknown(t *testing.T) {
+	resource.UnitTest(t, resource.TestCase{
+		TerraformVersionChecks: []tfversion.TerraformVersionCheck{
+			tfversion.SkipBelow(tfversion.Version1_8_0),
+		},
+		ProtoV5ProviderFactories: map[string]func() (tfprotov5.ProviderServer, error){
+			"framework": providerserver.NewProtocol5WithError(New()),
+		},
+		Steps: []resource.TestStep{
+			{
+				Config: `
+				resource "terraform_data" "test" {
+					input = provider::framework::float64(1.23)
+				}
+
+				output "test" {
+					value = terraform_data.test.output
+				}`,
+				ConfigPlanChecks: resource.ConfigPlanChecks{
+					PreApply: []plancheck.PlanCheck{
+						plancheck.ExpectUnknownOutputValue("test"),
+					},
+				},
+				ConfigStateChecks: []statecheck.StateCheck{
+					statecheck.ExpectKnownOutputValue("test", knownvalue.Float64Exact(1.23)),
+				},
+			},
+		},
+	})
+}