Refactor random generation into a definition to make it reusable

Signed-off-by: Tom Chauveau <tom.chauveau@epitech.eu>

tests/stdlib/kubernetes/helm/helm.cue

@@ -11,9 +11,11 @@ kubeconfig: dagger.#Secret @dagger(input)
 
 // Deploy user local chart
 TestHelmSimpleChart: {
+	random: #Random & {}
+
 	// Deploy chart
 	deploy: helm.#Chart & {
-		name:         "dagger-test-helm-simple-chart-\(random)"
+		name:         "dagger-test-helm-simple-chart-\(random.out)"
 		namespace:    "dagger-test"
 		"kubeconfig": kubeconfig
 		chartSource:  dagger.#Artifact
@@ -28,9 +30,11 @@ TestHelmSimpleChart: {
 
 // Deploy remote chart
 TestHelmRepoChart: {
+	random: #Random & {}
+
 	// Deploy chart
 	deploy: helm.#Chart & {
-		name:         "dagger-test-helm-repository-\(random)"
+		name:         "dagger-test-helm-repository-\(random.out)"
 		namespace:    "dagger-test"
 		"kubeconfig": kubeconfig
 		chart:        "redis"

tests/stdlib/kubernetes/helm/random.cue

@@ -1,21 +1,33 @@
 package helm
 
 import (
+	"strconv"
+
 	"dagger.io/alpine"
 	"dagger.io/dagger/op"
 )
 
-// Generate a random number
-random: {
-	string
-	#up: [
-		op.#Load & {from: alpine.#Image},
-		op.#Exec & {
-			always: true
-			args: ["sh", "-c", "cat /dev/urandom | tr -dc 'a-z' | fold -w 10 | head -n 1 | tr -d '\n' > /rand"]
-		},
-		op.#Export & {
-			source: "/rand"
-		},
-	]
+#Random: {
+	size: *12 | number
+
+	out: {
+		string
+
+		#up: [
+			op.#Load & {from: alpine.#Image},
+
+			op.#Exec & {
+				always: true
+				args: ["sh", "-c", #"""
+					tr -cd '[:alpha:]' < /dev/urandom | fold -w "$SIZE" | head -n 1 | tr '[A-Z]' '[a-z]' | tr -d '\n' > /rand
+					"""#,
+				]
+				env: SIZE: strconv.FormatInt(size, 10)
+			},
+
+			op.#Export & {
+				source: "/rand"
+			},
+		]
+	}
 }

tests/stdlib/kubernetes/kubernetes.cue

@@ -11,11 +11,13 @@ import (
 kubeconfig: dagger.#Secret @dagger(input)
 
 TestKubeApply: {
+	random: #Random & {}
+
 	// Pod spec
 	kubeSrc: {
 		apiVersion: "v1"
 		kind:       "Pod"
-		metadata: name: "kube-test-\(random)"
+		metadata: name: "kube-test-\(random.out)"
 		spec: {
 			restartPolicy: "Never"
 			containers: [{

tests/stdlib/kubernetes/random.cue

@@ -1,21 +1,33 @@
 package kubernetes
 
 import (
+	"strconv"
+
 	"dagger.io/alpine"
 	"dagger.io/dagger/op"
 )
 
-// Generate a random number
-random: {
-	string
-	#up: [
-		op.#Load & {from: alpine.#Image},
-		op.#Exec & {
-			always: true
-			args: ["sh", "-c", "cat /dev/urandom | tr -dc 'a-z' | fold -w 10 | head -n 1 | tr -d '\n' > /rand"]
-		},
-		op.#Export & {
-			source: "/rand"
-		},
-	]
+#Random: {
+	size: *12 | number
+
+	out: {
+		string
+
+		#up: [
+			op.#Load & {from: alpine.#Image},
+
+			op.#Exec & {
+				always: true
+				args: ["sh", "-c", #"""
+					tr -cd '[:alpha:]' < /dev/urandom | fold -w "$SIZE" | head -n 1 | tr '[A-Z]' '[a-z]' | tr -d '\n' > /rand
+					"""#,
+				]
+				env: SIZE: strconv.FormatInt(size, 10)
+			},
+
+			op.#Export & {
+				source: "/rand"
+			},
+		]
+	}
 }