Add test for rebuilding when pod version updates

Author: kylefleming

test/change_podfile.py

@@ -233,6 +233,39 @@ class A {
 """
 ) 
 
+def oldPodVersion():
+    return (wrapper(
+"""
+pod "ReactiveSwift", "= 3.0.0", :binary => true
+""") ,
+"""
+import ReactiveSwift
+class A {
+    // Works on 3.x but not 4.x
+    let a = A.b(SignalProducer<Int, NSError>.empty)
+    static func b<U: BindingSource>(_ b: U) -> Bool {
+        return true
+    }
+}
+"""
+)
+
+def upgradePodVersion():
+    return (wrapper(
+"""
+pod "ReactiveSwift", "= 4.0.0", :binary => true
+""") ,
+"""
+import ReactiveSwift
+class A {
+    func b() {
+        // Works on 4.x but not 3.x
+        Lifetime.make().token.dispose()
+    }
+}
+"""
+)
+
 
 if __name__ == "__main__":
     arg = sys.argv[1]

test/test.sh

@@ -7,7 +7,7 @@ build() {
 
 rm -rf Pods
 
-cases=("initial" "addSwiftPod" "revertToSourceCode" "addDifferentNamePod" "addSubPod" "deleteAPod" "addVendoredLibPod" "universalFlag" "multiplePlatforms" "multiplePlatformsWithALLFlag")
+cases=("initial" "addSwiftPod" "revertToSourceCode" "addDifferentNamePod" "addSubPod" "deleteAPod" "addVendoredLibPod" "universalFlag" "multiplePlatforms" "multiplePlatformsWithALLFlag" "oldPodVersion" "upgradePodVersion")
 for action in ${cases[@]}; do
     python change_podfile.py ${action}
     bundle exec pod install