merge imports in _tmp_dangerfile.swift

Author: 417-72KI

Sources/RunnerLib/Files Import/DangerFileGenerator.swift

@@ -25,6 +25,19 @@ public final class DangerFileGenerator {
             dangerContent.replaceSubrange(replacementRange, with: fileContent)
         })
 
+        mergeImports(in: &dangerContent)
+
         try dangerContent.write(toFile: fileName, atomically: false, encoding: .utf8)
     }
 }
+
+private extension DangerFileGenerator {
+    func mergeImports(in content: inout String) {
+        var lines = content.split(separator: "\n",
+                                  omittingEmptySubsequences: false)
+        let imports = Set(lines.filter { $0.hasPrefix("import ") })
+        lines.removeAll { imports.contains($0) }
+        lines.insert(contentsOf: imports.sorted(), at: 0)
+        content = lines.joined(separator: "\n")
+    }
+}

Tests/RunnerLibTests/__Snapshots__/DangerFileGeneratorTests/testItGeneratesTheCorrectFileWhenOneOfTheImportedFilesIsMissing.1.txt

@@ -1,6 +1,11 @@
+import Danger
+
 file2Content ⚠️
 
 // fileImport: GeneratedTestFile3.swift
+
+let danger = Danger()
+
 file1Content 👍🏻
 secondLine
 message("Text")

Tests/RunnerLibTests/__Snapshots__/DangerFileGeneratorTests/testItGeneratesTheCorrectFileWhenThereIsAreMultipleImports.1.txt

@@ -1,8 +1,15 @@
+import Danger
+import Foundation
+
 file2Content ⚠️
 
+
 file3Content 👩‍👩‍👦‍👦
 secondLine
 really really really really really really really really really really really really really really really really really really really really really really long text
+
+let danger = Danger()
+
 file1Content 👍🏻
 secondLine
 message("Text")