First version

CHDataManagement/Preview Content/MockImage.swift

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+import SwiftUI
+
+/// An image loaded from the app resources for test purposes
+struct MockImage {
+
+    let name: String
+
+    static var images: [ImageResource] {
+        ["image1", "image2", "image3", "image4"]
+            .map(ImageResource.init)
+    }
+}
+
+extension MockImage: ExpressibleByStringLiteral {
+
+    init(stringLiteral value: StringLiteralType) {
+        self.name = value
+    }
+}

CHDataManagement/Preview Content/Page+Mock.swift

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+import Foundation
+
+extension Page {
+
+    static var empty: Page {
+        .init(
+            id: "my-id",
+            isDraft: true,
+            metadata: [
+                .init(language: .english, headline: "Title"),
+                .init(language: .german, headline: "Titel")
+            ],
+            externalFiles: [],
+            requiredFiles: [],
+            images: [])
+    }
+}
+

CHDataManagement/Preview Content/Post+Mock.swift

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+
+extension Post {
+
+    static var empty: Post {
+        .init(id: 0,
+              isDraft: true,
+              startDate: .now,
+              title: .init(en: "The title", de: "Der Titel"),
+              text: .init(en: "", de: ""),
+              tags: [],
+              images: [])
+    }
+
+    static var mock: Post {
+        Post(
+            id: 1,
+            isDraft: false,
+            startDate: .now,
+            endDate: nil,
+            title: .init(en: "The title", de: "Der Titel"),
+            text: .init(
+                en: "Very nice and solitary hike from Oberau to Krottenkopf. Challenging and rewarding, due to the length and height.",
+                de: "Sehr schöne und einsame Tour von Oberau zum Krottenkopf. Abwechslungsreich und stellenweise fordernd, aufgrund der Länge und der Höhenmeter auch anstrengend."
+            ),
+            tags: [
+                Tag(en: "Nature", de: "Natur"),
+                Tag(en: "Sports", de: "Sport"),
+                Tag(en: "Hiking", de: "Wandern")
+            ],
+            images: []
+        )
+    }
+
+    static var fullMock: Post {
+        .init(
+            id: 2,
+            isDraft: true,
+            startDate: .now.addingTimeInterval(-86400), endDate: .now,
+            title: .init(en: "A longer title", de: "Ein langer Titel"),
+            text: .init(
+                en: "Very nice and solitary hike from Oberau to Krottenkopf. Challenging and rewarding, due to the length and height.",
+                de: "Sehr schöne und einsame Tour von Oberau zum Krottenkopf. Abwechslungsreich und stellenweise fordernd, aufgrund der Länge und der Höhenmeter auch anstrengend."
+            ),
+            tags: [
+                Tag(en: "Nature", de: "Natur"),
+                Tag(en: "Sports", de: "Sport"),
+                Tag(en: "Hiking", de: "Wandern"),
+                Tag(en: "Mountains", de: "Berge")
+            ],
+            images: MockImage.images
+        )
+    }
+}

CHDataManagement/Preview Content/Preview Assets.xcassets/image1.imageset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "image1.jpg",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

CHDataManagement/Preview Content/Preview Assets.xcassets/image2.imageset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "image2.jpg",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

CHDataManagement/Preview Content/Preview Assets.xcassets/image3.imageset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "image3.jpg",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

CHDataManagement/Preview Content/Preview Assets.xcassets/image4.imageset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "image4.jpg",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}