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Tests/SwiftNLPTests/AllMiniLM_pipelineTest.swift

+import XCTest
+import SwiftAnnoy
+import NaturalLanguage
+@testable import SwiftNLP
+
+final class AllMiniLM_pipelineTest: XCTestCase {
+    
+    // test fetching names of all the files
+    func testFileNameFetching() throws {
+        let redditCommentNames = TestUtils.getJsonFiles(prefix: "RC")
+        print("reddit comment files: \(redditCommentNames)")
+        let redditSubmissionNames = TestUtils.getJsonFiles(prefix: "RS")
+        print("reddit submission files: \(redditSubmissionNames)")
+    }
+    
+    // test reading reddit submission json files into actual objects
+    func testRedditSubmissions() throws {
+        let redditSubmissionJson = TestUtils.loadAllRedditSubmission()
+        for jsonData in redditSubmissionJson {
+            let redditSubmission = readRedditSubmissionJson(json: jsonData)
+            XCTAssertNotNil(redditSubmission, "Failed to decode RedditSubmissionData")
+        }
+    }
+    
+    // test reading reddit comment json files into actual objects
+    func testRedditComments() throws {
+        let redditCommentJson = TestUtils.loadAllRedditComment()
+        for jsonData in redditCommentJson {
+            let redditComment = readRedditCommentJson(json: jsonData)
+            XCTAssertNotNil(redditComment, "Failed to decode RedditCommentData")
+        }
+    }
+    
+    func test20kDownload() async throws {
+        
+        let result = try await downloadSubredditFromServer(subreddit: "StopGaming")
+        print("Loaded \(result.count) threads from server.")
+        if let random = result.randomElement() {
+            let (key, value) = random
+            print("Key: \(key), Value: \(value)")
+        }
+        XCTAssertEqual(result.count, 34829, "Failed to load subreddit data from https://reddit-top20k.cworld.ai")
+        
+    }
+    
+    
+    func testDocumentReading() async throws {
+        // loads all json data for test documents
+        let redditCommentJson = TestUtils.loadAllRedditComment()
+        let redditSubmissionJson = TestUtils.loadAllRedditSubmission()
+        
+        let redditComments = redditCommentJson.compactMap { readRedditCommentJson(json: $0)}
+        let redditSubmissions = redditSubmissionJson.compactMap { readRedditSubmissionJson(json: $0) }
+        
+        var bodies: [String] = []
+        
+        // load all the reddit comments' body as comment to the document
+        for comment in redditComments {
+            //debugPrint("Processing \(comment.posts.count) comments")
+            
+            for post in comment.posts {
+                if let body = post.body {
+                    bodies.append(body)
+                }
+            }
+        }
+        
+        for submission in redditSubmissions {
+            //debugPrint("Processing \(submission.posts.count) submissions")
+            
+            for post in submission.posts {
+                if let p = post.selftext {
+                    //debugPrint(p)
+                    bodies.append(p)
+                }
+            }
+        }
+        
+        // Debug code
+//        bodies = Array(bodies.prefix(10))
+//        print(bodies)
+        
+        //start to encode the db and query
+        var database_embedding: [[Float]] = []
+        var query_embedding: [Float] = []
+        let query = "stop playing video games"
+        var embedding_dim: Int = 384
+        var model = MiniLMEmbeddings()
+        query_embedding = await model.encode(sentence: query)!
+        
+        var i = 1
+        //append sentence embedding to database_embedding
+        for string in bodies {
+            if let vector = await model.encode(sentence: string) {
+                database_embedding.append(vector)
+                print(i)
+                i += 1
+            } else {
+                fatalError("Error occurred1")
+            }
+            
+        }
+        
+        let index = AnnoyIndex<Float>(itemLength: embedding_dim, metric: .euclidean)
+        
+        try? index.addItems(items: &database_embedding)
+        try? index.build(numTrees: 50)
+        
+        let results = index.getNNsForVector(vector: &query_embedding, neighbors: 10)
+        
+        if let finalresult = results {
+            let extractedIndeices = finalresult.indices
+            for index in extractedIndeices {
+                if index < bodies.count {
+                    print(bodies[index])
+                } else {
+                    print("Index \(index) out of range.")
+                }
+            }
+        }
+        print(results)
+    }
+}