devenv: adhoc tests for quick and easy repro directly in dagger

Signed-off-by: Solomon Hykes <sh.github.6811@hykes.org>

.dagger/env/dev/adhoc.cue

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"dagger.io/dagger/op"
+)
+
+// Reproduce inline issue.
+// See https://github.com/dagger/dagger/issues/395
+test: adhoc: repro395: {
+	good: {
+		// This field is correctly computed because its intermediary pipeline is not inlined.
+		hello: sayHello.message
+
+		// Intermediary pipeline cannot be inlined: it must be visible in a field
+		sayHello: {
+			message: {
+				string
+				#up: [
+					op.#FetchContainer & { ref: "alpine" },
+					op.#Exec & {
+						args: ["sh", "-c", "echo hello > /message"]
+					},
+					op.#Export & { source: "/message", format: "string" },
+				]
+			}
+	  	}
+	}
+	bad: {
+		// This field is NOT correctly computed because its intermediary pipeline is inlined.
+		hello: {
+			message: {
+				string
+				#up: [
+					op.#FetchContainer & { ref: "alpine" },
+					op.#Exec & {
+						args: ["sh", "-c", "echo hello > /message"]
+					},
+					op.#Export & { source: "/message", format: "string" },
+				]
+			}
+	  	}.message
+
+	}
+}