Sync with upstream crossplane-runtime changes

* Bump crossplane-runtime
* Update GetInteger to handle floats locally
* Use new claim.Reference type

Signed-off-by: Steven Borrelli <steve@borrelli.org>

go.mod

@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/bufbuild/buf v1.27.1
-	github.com/crossplane/crossplane-runtime v1.13.0
+	github.com/crossplane/crossplane-runtime v1.14.0-rc.0.0.20231019152856-a5df125af6f8
 	github.com/go-logr/logr v1.2.4
 	github.com/go-logr/zapr v1.2.4
 	github.com/google/go-cmp v0.6.0
@@ -35,7 +35,7 @@ require (
 	github.com/docker/docker-credential-helpers v0.8.0 // indirect
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
-	github.com/emicklei/go-restful/v3 v3.10.2 // indirect
+	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
 	github.com/evanphx/json-patch/v5 v5.6.0 // indirect
 	github.com/felixge/fgprof v0.9.3 // indirect
 	github.com/go-chi/chi/v5 v5.0.10 // indirect
@@ -72,7 +72,7 @@ require (
 	github.com/rs/cors v1.10.1 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
-	github.com/spf13/afero v1.9.5 // indirect
+	github.com/spf13/afero v1.10.0 // indirect
 	github.com/spf13/cobra v1.7.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/tetratelabs/wazero v1.5.0 // indirect
@@ -98,11 +98,11 @@ require (
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	k8s.io/client-go v0.28.2 // indirect
+	k8s.io/client-go v0.28.3 // indirect
 	k8s.io/klog/v2 v2.100.1 // indirect
 	k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 // indirect
 	k8s.io/utils v0.0.0-20230505201702-9f6742963106 // indirect
-	sigs.k8s.io/controller-runtime v0.15.0 // indirect
+	sigs.k8s.io/controller-runtime v0.16.3 // indirect
 	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
 )

go.sum

@@ -70,8 +70,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.3 h1:qMCsGGgs+MAzDFyp9LpAe1Lqy/fY/qCovCm0q
 github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/creack/pty v1.1.18 h1:n56/Zwd5o6whRC5PMGretI4IdRLlmBXYNjScPaBgsbY=
-github.com/crossplane/crossplane-runtime v1.13.0 h1:EumInUbS8mXV7otwoI3xa0rPczexJOky4XLVlHxxjO0=
-github.com/crossplane/crossplane-runtime v1.13.0/go.mod h1:FuKIC8Mg8hE2gIAMyf2wCPkxkFPz+VnMQiYWBq1/p5A=
+github.com/crossplane/crossplane-runtime v1.14.0-rc.0.0.20231019152856-a5df125af6f8 h1:AWDPFzOHzOCNgyjMuc/TrE3xUlvzWVj7Wi/WG9IheRA=
+github.com/crossplane/crossplane-runtime v1.14.0-rc.0.0.20231019152856-a5df125af6f8/go.mod h1:aOP+5W2wKpvthVs3pFNbVOe1jwrKYbJho0ThGNCVz9o=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -89,8 +89,8 @@ github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKoh
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
 github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
-github.com/emicklei/go-restful/v3 v3.10.2 h1:hIovbnmBTLjHXkqEBUz3HGpXZdM7ZrE9fJIZIqlJLqE=
-github.com/emicklei/go-restful/v3 v3.10.2/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
+github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g=
+github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
@@ -248,8 +248,8 @@ github.com/morikuni/aec v1.0.0 h1:nP9CBfwrvYnBRgY6qfDQkygYDmYwOilePFkwzv4dU8A=
 github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7PXmsc=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
-github.com/onsi/ginkgo/v2 v2.9.5 h1:+6Hr4uxzP4XIUyAkg61dWBw8lb/gc4/X5luuxN/EC+Q=
-github.com/onsi/gomega v1.27.7 h1:fVih9JD6ogIiHUN6ePK7HJidyEDpWGVB5mzM7cWNXoU=
+github.com/onsi/ginkgo/v2 v2.11.0 h1:WgqUCUt/lT6yXoQ8Wef0fsNn5cAuMK7+KT9UFRz2tcU=
+github.com/onsi/gomega v1.27.10 h1:naR28SdDFlqrG6kScpT8VWpu1xWY5nJRCF3XaYyBjhI=
 github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
 github.com/opencontainers/image-spec v1.1.0-rc5 h1:Ygwkfw9bpDvs+c9E34SdgGOj41dX/cbdlwvlWt0pnFI=
@@ -264,11 +264,11 @@ github.com/pkg/profile v1.7.0/go.mod h1:8Uer0jas47ZQMJ7VD+OHknK4YDY07LPUC6dEvqDj
 github.com/pkg/sftp v1.13.1/go.mod h1:3HaPG6Dq1ILlpPZRO0HVMrsydcdLt6HRDccSgb87qRg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_golang v1.15.1 h1:8tXpTmJbyH5lydzFPoxSIJ0J46jdh3tylbvM1xCv0LI=
+github.com/prometheus/client_golang v1.16.0 h1:yk/hx9hDbrGHovbci4BY+pRMfSuuat626eFsHb7tmT8=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.4.0 h1:5lQXD3cAg1OXBf4Wq03gTrXHeaV0TQvGfUooCfx1yqY=
 github.com/prometheus/common v0.44.0 h1:+5BrQJwiBB9xsMygAB3TNvpQKOwlkc25LbISbrdOOfY=
-github.com/prometheus/procfs v0.10.0 h1:UkG7GPYkO4UZyLnyXjaWYcgOSONqwdBqFUT95ugmt6I=
+github.com/prometheus/procfs v0.10.1 h1:kYK1Va/YMlutzCGazswoHKo//tZVlFpKYh+PymziUAg=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
 github.com/rogpeppe/go-internal v1.11.0/go.mod h1:ddIwULY96R17DhadqLgMfk9H9tvdUzkipdSkR5nkCZA=
@@ -278,8 +278,8 @@ github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
-github.com/spf13/afero v1.9.5 h1:stMpOSZFs//0Lv29HduCmli3GUfpFoF3Y1Q/aXj/wVM=
-github.com/spf13/afero v1.9.5/go.mod h1:UBogFpq8E9Hx+xc5CNTTEpTnuHVmXDwZcZcE1eb/UhQ=
+github.com/spf13/afero v1.10.0 h1:EaGW2JJh15aKOejeuJ+wpFSHnbd7GE6Wvp3TsNhb6LY=
+github.com/spf13/afero v1.10.0/go.mod h1:UBogFpq8E9Hx+xc5CNTTEpTnuHVmXDwZcZcE1eb/UhQ=
 github.com/spf13/cobra v1.7.0 h1:hyqWnYt1ZQShIddO5kBpj3vu05/++x6tJ6dg8EC572I=
 github.com/spf13/cobra v1.7.0/go.mod h1:uLxZILRyS/50WlhOIKD7W6V5bgeIt+4sICxh6uRMrb0=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
@@ -349,6 +349,7 @@ golang.org/x/exp v0.0.0-20191227195350-da58074b4299/go.mod h1:2RIsYlXP63K8oxa1u0
 golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
 golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EHIKF9dgMWnmCNThgcyBT1FY9mM=
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -551,7 +552,7 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-gomodules.xyz/jsonpatch/v2 v2.3.0 h1:8NFhfS6gzxNqjLIYnZxg319wZ5Qjnx4m/CcX+Klzazc=
+gomodules.xyz/jsonpatch/v2 v2.4.0 h1:Ci3iUJyx9UeRx7CeFN8ARgGbkESwJK+KB9lLcWxY/Zw=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
 google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
@@ -675,12 +676,12 @@ honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 k8s.io/api v0.28.3 h1:Gj1HtbSdB4P08C8rs9AR94MfSGpRhJgsS+GF9V26xMM=
 k8s.io/api v0.28.3/go.mod h1:MRCV/jr1dW87/qJnZ57U5Pak65LGmQVkKTzf3AtKFHc=
-k8s.io/apiextensions-apiserver v0.27.3 h1:xAwC1iYabi+TDfpRhxh4Eapl14Hs2OftM2DN5MpgKX4=
+k8s.io/apiextensions-apiserver v0.28.3 h1:Od7DEnhXHnHPZG+W9I97/fSQkVpVPQx2diy+2EtmY08=
 k8s.io/apimachinery v0.28.3 h1:B1wYx8txOaCQG0HmYF6nbpU8dg6HvA06x5tEffvOe7A=
 k8s.io/apimachinery v0.28.3/go.mod h1:uQTKmIqs+rAYaq+DFaoD2X7pcjLOqbQX2AOiO0nIpb8=
-k8s.io/client-go v0.28.2 h1:DNoYI1vGq0slMBN/SWKMZMw0Rq+0EQW6/AK4v9+3VeY=
-k8s.io/client-go v0.28.2/go.mod h1:sMkApowspLuc7omj1FOSUxSoqjr+d5Q0Yc0LOFnYFJY=
-k8s.io/component-base v0.27.3 h1:g078YmdcdTfrCE4fFobt7qmVXwS8J/3cI1XxRi/2+6k=
+k8s.io/client-go v0.28.3 h1:2OqNb72ZuTZPKCl+4gTKvqao0AMOl9f3o2ijbAj3LI4=
+k8s.io/client-go v0.28.3/go.mod h1:LTykbBp9gsA7SwqirlCXBWtK0guzfhpoW4qSm7i9dxo=
+k8s.io/component-base v0.28.3 h1:rDy68eHKxq/80RiMb2Ld/tbH8uAE75JdCqJyi6lXMzI=
 k8s.io/klog/v2 v2.100.1 h1:7WCHKK6K8fNhTqfBhISHQ97KrnJNFZMcQvKp7gP/tmg=
 k8s.io/klog/v2 v2.100.1/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
 k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 h1:LyMgNKD2P8Wn1iAwQU5OhxCKlKJy0sHc+PcDwFB24dQ=
@@ -690,8 +691,8 @@ k8s.io/utils v0.0.0-20230505201702-9f6742963106/go.mod h1:OLgZIPagt7ERELqWJFomSt
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
-sigs.k8s.io/controller-runtime v0.15.0 h1:ML+5Adt3qZnMSYxZ7gAverBLNPSMQEibtzAgp0UPojU=
-sigs.k8s.io/controller-runtime v0.15.0/go.mod h1:7ngYvp1MLT+9GeZ+6lH3LOlcHkp/+tzA/fmHa4iq9kk=
+sigs.k8s.io/controller-runtime v0.16.3 h1:2TuvuokmfXvDUamSx1SuAOO3eTyye+47mJCigwG62c4=
+sigs.k8s.io/controller-runtime v0.16.3/go.mod h1:j7bialYoSn142nv9sCOJmQgDXQXxnroFU4VnX/brVJ0=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
 sigs.k8s.io/structured-merge-diff/v4 v4.2.3 h1:PRbqxJClWWYMNV1dhaG4NsibJbArud9kFxnAMREiWFE=

resource/composed/composed.go

@@ -25,6 +25,8 @@ import (
 	xpv1 "github.com/crossplane/crossplane-runtime/apis/common/v1"
 	"github.com/crossplane/crossplane-runtime/pkg/fieldpath"
 	"github.com/crossplane/crossplane-runtime/pkg/resource"
+
+	"github.com/crossplane/function-sdk-go/errors"
 )
 
 // New returns a new unstructured composed resource.
@@ -171,14 +173,27 @@ func (cd *Unstructured) GetInteger(path string) (int64, error) {
 	}
 
 	// If not, try return (and truncate) a float64.
-	if f64, err := fieldpath.Pave(cd.Object).GetNumber(path); err == nil {
+	if f64, err := getNumber(p, path); err == nil {
 		return int64(f64), nil
 	}
 
 	// If both fail, return our original error.
 	return 0, err
 }
 
+func getNumber(p *fieldpath.Paved, path string) (float64, error) {
+	v, err := p.GetValue(path)
+	if err != nil {
+		return 0, err
+	}
+
+	f, ok := v.(float64)
+	if !ok {
+		return 0, errors.Errorf("%s: not a (float64) number", path)
+	}
+	return f, nil
+}
+
 // SetValue at the supplied field path.
 func (cd *Unstructured) SetValue(path string, value any) error {
 	return fieldpath.Pave(cd.Object).SetValue(path, value)

resource/composite/composite.go

@@ -21,6 +21,7 @@ limitations under the License.
 package composite
 
 import (
+	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
@@ -29,6 +30,7 @@ import (
 	xpv1 "github.com/crossplane/crossplane-runtime/apis/common/v1"
 	"github.com/crossplane/crossplane-runtime/pkg/fieldpath"
 	"github.com/crossplane/crossplane-runtime/pkg/resource"
+	"github.com/crossplane/crossplane-runtime/pkg/resource/unstructured/claim"
 )
 
 // New returns a new unstructured composite resource (XR).
@@ -145,16 +147,16 @@ func (xr *Unstructured) GetCompositionUpdatePolicy() *xpv1.UpdatePolicy {
 }
 
 // GetClaimReference of this composite resource.
-func (xr *Unstructured) GetClaimReference() *corev1.ObjectReference {
-	out := &corev1.ObjectReference{}
+func (xr *Unstructured) GetClaimReference() *claim.Reference {
+	out := &claim.Reference{}
 	if err := fieldpath.Pave(xr.Object).GetValueInto("spec.claimRef", out); err != nil {
 		return nil
 	}
 	return out
 }
 
 // SetClaimReference of this composite resource.
-func (xr *Unstructured) SetClaimReference(ref *corev1.ObjectReference) {
+func (xr *Unstructured) SetClaimReference(ref *claim.Reference) {
 	_ = fieldpath.Pave(xr.Object).SetValue("spec.claimRef", ref)
 }
 
@@ -309,14 +311,26 @@ func (xr *Unstructured) GetInteger(path string) (int64, error) {
 	}
 
 	// If not, try return (and truncate) a float64.
-	if f64, err := fieldpath.Pave(xr.Object).GetNumber(path); err == nil {
+	if f64, err := getNumber(p, path); err == nil {
 		return int64(f64), nil
 	}
 
-	// If both fail, return our original error.
 	return 0, err
 }
 
+func getNumber(p *fieldpath.Paved, path string) (float64, error) {
+	v, err := p.GetValue(path)
+	if err != nil {
+		return 0, err
+	}
+
+	f, ok := v.(float64)
+	if !ok {
+		return 0, errors.Errorf("%s: not a (float64) number", path)
+	}
+	return f, nil
+}
+
 // SetValue at the supplied field path.
 func (xr *Unstructured) SetValue(path string, value any) error {
 	return fieldpath.Pave(xr.Object).SetValue(path, value)

resource/composite/composite_test.go

@@ -17,22 +17,33 @@ limitations under the License.
 package composite
 
 import (
-	"fmt"
+	"errors"
+	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/apimachinery/pkg/util/yaml"
-)
 
-func Example() {
+	"github.com/crossplane/crossplane-runtime/pkg/fieldpath"
+)
 
-	manifest := []byte(`
+var manifest = []byte(`
 apiVersion: example.org/v1
 kind: CoolCompositeResource
 metadata:
   name: my-cool-xr
 spec:
-  coolness: 9001
+  intfield: 9001
+  floatfield: 9.001
+  floatexp: 10e3
+  notanint: foo
 `)
 
+func TestGetInteger(t *testing.T) {
+	errNotFound := func(path string) error {
+		p := &fieldpath.Paved{}
+		_, err := p.GetValue(path)
+		return err
+	}
 	// Create a new, empty XR.
 	xr := New()
 
@@ -41,8 +52,98 @@ spec:
 	// for you.
 	_ = yaml.Unmarshal(manifest, xr)
 
-	// Get the spec.coolness field of the XR.
-	coolness, _ := xr.GetInteger("spec.coolness")
-	fmt.Println(coolness)
-	// Output: 9001
+	type args struct {
+		path string
+	}
+	type want struct {
+		i   int64
+		err error
+	}
+
+	cases := map[string]struct {
+		reason string
+		args   args
+		want   want
+	}{
+		"Integer": {
+			reason: "Correctly return an integer",
+			args: args{
+				path: "spec.intfield",
+			},
+			want: want{
+				i:   9001,
+				err: nil,
+			},
+		},
+		"Float": {
+			reason: "Correctly truncates a float",
+			args: args{
+				path: "spec.floatfield",
+			},
+			want: want{
+				i:   9,
+				err: nil,
+			},
+		},
+		"FloatExp": {
+			reason: "Correctly truncates a float with an exponent",
+			args: args{
+				path: "spec.floatexp",
+			},
+			want: want{
+				i:   10000,
+				err: nil,
+			},
+		},
+		"ParseString": {
+			reason: "Error when not a number",
+			args: args{
+				path: "spec.notanint",
+			},
+			want: want{
+				i:   0,
+				err: errors.New("spec.notanint: not a (int64) number"),
+			},
+		},
+		"MissingField": {
+			reason: "Return 0 and error on a missing field",
+			args: args{
+				path: "badfield",
+			},
+			want: want{
+				i:   0,
+				err: errNotFound("badfield"),
+			},
+		},
+	}
+
+	for name, tc := range cases {
+		t.Run(name, func(t *testing.T) {
+			i, err := xr.GetInteger(tc.args.path)
+
+			if diff := cmp.Diff(tc.want.i, i); diff != "" {
+				t.Errorf("%s\nGetInteger(...): -want i, +got i:\n%s", tc.reason, diff)
+			}
+			if diff := cmp.Diff(tc.want.err, err, EquateErrors()); diff != "" {
+				t.Errorf("%s\nGetInteger(...): -want err, +got err:\n%s", tc.reason, diff)
+			}
+		})
+	}
+
+}
+
+// EquateErrors returns true if the supplied errors are of the same type and
+// produce identical strings. This mirrors the error comparison behaviour of
+// https://github.com/go-test/deep,
+//
+// This differs from cmpopts.EquateErrors, which does not test for error strings
+// and instead returns whether one error 'is' (in the errors.Is sense) the
+// other.
+func EquateErrors() cmp.Option {
+	return cmp.Comparer(func(a, b error) bool {
+		if a == nil || b == nil {
+			return a == nil && b == nil
+		}
+		return a.Error() == b.Error()
+	})
 }

sdk_test.go

@@ -76,5 +76,5 @@ func Example() {
 	fmt.Println(string(j))
 
 	// Output:
-	// {"meta":{"ttl":"60s"}, "desired":{"resources":{"new":{"resource":{"apiVersion":"example.org/v1", "kind":"CoolResource", "metadata":{"labels":{"coolness":"high"}}, "spec":{"widgets":9001}}}}}}
+	// {"meta":{"ttl":"60s"},"desired":{"resources":{"new":{"resource":{"apiVersion":"example.org/v1","kind":"CoolResource","metadata":{"labels":{"coolness":"high"}},"spec":{"widgets":9001}}}}}}
 }