From 98b2b4020c8ff559aef7b4953da5a457848fd232 Mon Sep 17 00:00:00 2001
From: Lakshmi Vyshnavi Vutukuri <vutukuri@pdx.edu>
Date: Sun, 9 Feb 2025 13:53:12 -0800
Subject: [PATCH] Created a Player Selector component; Added index; Added tests

---
 app/index.tsx                                |  30 +--
 components/PlayerSelector.tsx                |  64 ++++++
 components/__tests__/PlayerSelector.test.tsx |  57 +++++
 package-lock.json                            | 215 +++++++++++++++++++
 package.json                                 |   4 +
 5 files changed, 358 insertions(+), 12 deletions(-)
 create mode 100644 components/PlayerSelector.tsx
 create mode 100644 components/__tests__/PlayerSelector.test.tsx

diff --git a/app/index.tsx b/app/index.tsx
index 866b635..7c7e016 100644
--- a/app/index.tsx
+++ b/app/index.tsx
@@ -1,15 +1,21 @@
-import { Text, View } from "react-native";
+import React, { useState } from "react";
+import { ScrollView, Text } from "react-native";
+import PlayerSelector from "@/components/PlayerSelector";
+
+const IndexScreen = () => {
+  const [playerCount, setPlayerCount] = useState(2);
 
-export default function Index() {
   return (
-    <View
-      style={{
-        flex: 1,
-        justifyContent: "center",
-        alignItems: "center",
-      }}
-    >
-      <Text>Edit app/index.tsx to edit this screen.</Text>
-    </View>
+    <ScrollView contentContainerStyle={{ padding: 20, flexGrow: 1 }}>
+      <Text style={{ fontSize: 24, marginBottom: 30, marginTop: 50 }}>
+        Poker Chip Helper
+      </Text>
+
+      <PlayerSelector
+        playerCount={playerCount}
+        setPlayerCount={setPlayerCount}
+      />
+    </ScrollView>
   );
-}
+};
+export default IndexScreen;
diff --git a/components/PlayerSelector.tsx b/components/PlayerSelector.tsx
new file mode 100644
index 0000000..b51ff4c
--- /dev/null
+++ b/components/PlayerSelector.tsx
@@ -0,0 +1,64 @@
+import React from "react";
+import { View, Text, Button, Image, StyleSheet } from "react-native";
+
+interface PlayerSelectorProps {
+  playerCount: number;
+  setPlayerCount: React.Dispatch<React.SetStateAction<number>>;
+}
+
+const PlayerSelector: React.FC<PlayerSelectorProps> = ({
+  playerCount,
+  setPlayerCount,
+}) => {
+  const increasePlayers = () => {
+    if (playerCount < 8) setPlayerCount(playerCount + 1);
+  };
+
+  const decreasePlayers = () => {
+    if (playerCount > 2) setPlayerCount(playerCount - 1);
+  };
+
+  return (
+    <View style={styles.container}>
+      <View style={styles.header}>
+        <Image
+          source={{
+            uri: "https://static.thenounproject.com/png/3890959-200.png",
+          }}
+          style={styles.icon}
+        />
+        <Text style={styles.title}>Select Number of Players:</Text>
+      </View>
+
+      <Text style={styles.playerCount}>{playerCount}</Text>
+      <View style={{ flexDirection: "row" }}>
+        <Button title="-" onPress={decreasePlayers} />
+        <Button title="+" onPress={increasePlayers} />
+      </View>
+    </View>
+  );
+};
+
+const styles = StyleSheet.create({
+  container: {
+    padding: 20,
+  },
+  header: {
+    flexDirection: "row",
+    alignItems: "center",
+  },
+  title: {
+    fontSize: 18,
+    marginLeft: 10, // Spacing between icon and text
+  },
+  icon: {
+    width: 48, // Increased size
+    height: 48, // Increased size
+  },
+  playerCount: {
+    fontSize: 24,
+    marginVertical: 10,
+  },
+});
+
+export default PlayerSelector;
diff --git a/components/__tests__/PlayerSelector.test.tsx b/components/__tests__/PlayerSelector.test.tsx
new file mode 100644
index 0000000..0e29d1c
--- /dev/null
+++ b/components/__tests__/PlayerSelector.test.tsx
@@ -0,0 +1,57 @@
+import React from "react";
+import { fireEvent, render } from "@testing-library/react-native";
+import PlayerSelector from "@/components/PlayerSelector";
+
+describe("PlayerSelector Component", () => {
+  it("renders the initial player count and buttons correctly", () => {
+    const setPlayerCount = jest.fn();
+    const { getByText, getByRole } = render(
+      <PlayerSelector playerCount={4} setPlayerCount={setPlayerCount} />
+    );
+
+    expect(getByText("Select Number of Players:")).toBeTruthy();
+    expect(getByText("4")).toBeTruthy();
+    expect(getByRole("button", { name: "-" })).toBeTruthy();
+    expect(getByRole("button", { name: "+" })).toBeTruthy();
+  });
+
+  it('increases player count when "+" button is pressed', () => {
+    const setPlayerCount = jest.fn();
+    const { getByRole } = render(
+      <PlayerSelector playerCount={4} setPlayerCount={setPlayerCount} />
+    );
+
+    fireEvent.press(getByRole("button", { name: "+" }));
+    expect(setPlayerCount).toHaveBeenCalledWith(5);
+  });
+
+  it('decreases player count when "-" button is pressed', () => {
+    const setPlayerCount = jest.fn();
+    const { getByRole } = render(
+      <PlayerSelector playerCount={4} setPlayerCount={setPlayerCount} />
+    );
+
+    fireEvent.press(getByRole("button", { name: "-" }));
+    expect(setPlayerCount).toHaveBeenCalledWith(3);
+  });
+
+  it("does not increase player count beyond 8", () => {
+    const setPlayerCount = jest.fn();
+    const { getByRole } = render(
+      <PlayerSelector playerCount={8} setPlayerCount={setPlayerCount} />
+    );
+
+    fireEvent.press(getByRole("button", { name: "+" }));
+    expect(setPlayerCount).not.toHaveBeenCalled();
+  });
+
+  it("does not decrease player count below 2", () => {
+    const setPlayerCount = jest.fn();
+    const { getByRole } = render(
+      <PlayerSelector playerCount={2} setPlayerCount={setPlayerCount} />
+    );
+
+    fireEvent.press(getByRole("button", { name: "-" }));
+    expect(setPlayerCount).not.toHaveBeenCalled();
+  });
+});
diff --git a/package-lock.json b/package-lock.json
index c88e0f4..6556332 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -35,6 +35,10 @@
       },
       "devDependencies": {
         "@babel/core": "^7.25.2",
+        "@testing-library/dom": "^10.4.0",
+        "@testing-library/jest-native": "^5.4.3",
+        "@testing-library/react": "^16.2.0",
+        "@testing-library/react-native": "^13.0.1",
         "@types/jest": "^29.5.12",
         "@types/react": "~18.3.12",
         "@types/react-test-renderer": "^18.3.0",
@@ -4476,6 +4480,136 @@
         "@sinonjs/commons": "^3.0.0"
       }
     },
+    "node_modules/@testing-library/dom": {
+      "version": "10.4.0",
+      "resolved": "https://registry.npmjs.org/@testing-library/dom/-/dom-10.4.0.tgz",
+      "integrity": "sha512-pemlzrSESWbdAloYml3bAJMEfNh1Z7EduzqPKprCH5S341frlpYnUEW0H72dLxa6IsYr+mPno20GiSm+h9dEdQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.10.4",
+        "@babel/runtime": "^7.12.5",
+        "@types/aria-query": "^5.0.1",
+        "aria-query": "5.3.0",
+        "chalk": "^4.1.0",
+        "dom-accessibility-api": "^0.5.9",
+        "lz-string": "^1.5.0",
+        "pretty-format": "^27.0.2"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@testing-library/dom/node_modules/ansi-styles": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-5.2.0.tgz",
+      "integrity": "sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
+    "node_modules/@testing-library/dom/node_modules/pretty-format": {
+      "version": "27.5.1",
+      "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-27.5.1.tgz",
+      "integrity": "sha512-Qb1gy5OrP5+zDf2Bvnzdl3jsTf1qXVMazbvCoKhtKqVs4/YK4ozX4gKQJJVyNe+cajNPn0KoC0MC3FUmaHWEmQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-regex": "^5.0.1",
+        "ansi-styles": "^5.0.0",
+        "react-is": "^17.0.1"
+      },
+      "engines": {
+        "node": "^10.13.0 || ^12.13.0 || ^14.15.0 || >=15.0.0"
+      }
+    },
+    "node_modules/@testing-library/dom/node_modules/react-is": {
+      "version": "17.0.2",
+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-17.0.2.tgz",
+      "integrity": "sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@testing-library/jest-native": {
+      "version": "5.4.3",
+      "resolved": "https://registry.npmjs.org/@testing-library/jest-native/-/jest-native-5.4.3.tgz",
+      "integrity": "sha512-/sSDGaOuE+PJ1Z9Kp4u7PQScSVVXGud59I/qsBFFJvIbcn4P6yYw6cBnBmbPF+X9aRIsTJRDl6gzw5ZkJNm66w==",
+      "deprecated": "DEPRECATED: This package is no longer maintained.\nPlease use the built-in Jest matchers available in @testing-library/react-native v12.4+.\n\nSee migration guide: https://callstack.github.io/react-native-testing-library/docs/migration/jest-matchers",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "chalk": "^4.1.2",
+        "jest-diff": "^29.0.1",
+        "jest-matcher-utils": "^29.0.1",
+        "pretty-format": "^29.0.3",
+        "redent": "^3.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.0.0",
+        "react-native": ">=0.59",
+        "react-test-renderer": ">=16.0.0"
+      }
+    },
+    "node_modules/@testing-library/react": {
+      "version": "16.2.0",
+      "resolved": "https://registry.npmjs.org/@testing-library/react/-/react-16.2.0.tgz",
+      "integrity": "sha512-2cSskAvA1QNtKc8Y9VJQRv0tm3hLVgxRGDB+KYhIaPQJ1I+RHbhIXcM+zClKXzMes/wshsMVzf4B9vS4IZpqDQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.12.5"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "@testing-library/dom": "^10.0.0",
+        "@types/react": "^18.0.0 || ^19.0.0",
+        "@types/react-dom": "^18.0.0 || ^19.0.0",
+        "react": "^18.0.0 || ^19.0.0",
+        "react-dom": "^18.0.0 || ^19.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "@types/react-dom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@testing-library/react-native": {
+      "version": "13.0.1",
+      "resolved": "https://registry.npmjs.org/@testing-library/react-native/-/react-native-13.0.1.tgz",
+      "integrity": "sha512-sKMRNNniSOZ68qe1OBQAWvK87WCEmbfLp/MXfn2JE3x3WrNU8OFCVL0z/YKqw0/JO/d44J8Wq6FmRSaod/+VAg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "chalk": "^4.1.2",
+        "jest-matcher-utils": "^29.7.0",
+        "pretty-format": "^29.7.0",
+        "redent": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "jest": ">=29.0.0",
+        "react": ">=18.2.0",
+        "react-native": ">=0.71",
+        "react-test-renderer": ">=18.2.0"
+      },
+      "peerDependenciesMeta": {
+        "jest": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@tootallnate/once": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-2.0.0.tgz",
@@ -4486,6 +4620,13 @@
         "node": ">= 10"
       }
     },
+    "node_modules/@types/aria-query": {
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/@types/aria-query/-/aria-query-5.0.4.tgz",
+      "integrity": "sha512-rfT93uj5s0PRL7EzccGMs3brplhcrghnDoV26NqKhCAS1hVo+WdNsPvE/yb6ilfr5hi2MEk6d5EWJTKdxg8jVw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/babel__core": {
       "version": "7.20.5",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
@@ -5204,6 +5345,16 @@
         "sprintf-js": "~1.0.2"
       }
     },
+    "node_modules/aria-query": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/aria-query/-/aria-query-5.3.0.tgz",
+      "integrity": "sha512-b0P0sZPKtyu8HkeRAfCq0IfURZK+SuwMjY1UXGBU27wpAiTwQAIlq56IbIO+ytk/JjS1fMR14ee5WBBfKi5J6A==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "dequal": "^2.0.3"
+      }
+    },
     "node_modules/array-buffer-byte-length": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/array-buffer-byte-length/-/array-buffer-byte-length-1.0.2.tgz",
@@ -6847,6 +6998,16 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/dequal": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/dequal/-/dequal-2.0.3.tgz",
+      "integrity": "sha512-0je+qPKHEMohvfRTCEo3CrPG6cAzAYgmzKyxRiYSSDkS6eGJdyVJm7WaYA5ECaAD9wLB2T4EEeymA5aFVcYXCA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/destroy": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.2.0.tgz",
@@ -6914,6 +7075,13 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/dom-accessibility-api": {
+      "version": "0.5.16",
+      "resolved": "https://registry.npmjs.org/dom-accessibility-api/-/dom-accessibility-api-0.5.16.tgz",
+      "integrity": "sha512-X7BJ2yElsnOJ30pZF4uIIDfBEVgF4XEBxL9Bxhy6dnrm5hkzqmsWHGTiHqRiITNhMyFLyAiWndIJP7Z1NTteDg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/domexception": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/domexception/-/domexception-4.0.0.tgz",
@@ -11627,6 +11795,16 @@
         "yallist": "^3.0.2"
       }
     },
+    "node_modules/lz-string": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/lz-string/-/lz-string-1.5.0.tgz",
+      "integrity": "sha512-h5bgJWpxJNswbU7qCrV0tIKQCaS3blPDrqKWx+QxzuzL1zGUzij9XCWLrSLsJPu5t+eWA/ycetzYAO5IOMcWAQ==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "lz-string": "bin/bin.js"
+      }
+    },
     "node_modules/make-dir": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-4.0.0.tgz",
@@ -12185,6 +12363,16 @@
         "node": ">=4"
       }
     },
+    "node_modules/min-indent": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/min-indent/-/min-indent-1.0.1.tgz",
+      "integrity": "sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=4"
+      }
+    },
     "node_modules/minimatch": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
@@ -14014,6 +14202,20 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/redent": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/redent/-/redent-3.0.0.tgz",
+      "integrity": "sha512-6tDA8g98We0zd0GvVeMT9arEOnTw9qM03L9cJXaCjrip1OO764RDBLBfrB4cwzNGDj5OA5ioymC9GkizgWJDUg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "indent-string": "^4.0.0",
+        "strip-indent": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/reflect.getprototypeof": {
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/reflect.getprototypeof/-/reflect.getprototypeof-1.0.10.tgz",
@@ -15403,6 +15605,19 @@
         "node": ">=6"
       }
     },
+    "node_modules/strip-indent": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-3.0.0.tgz",
+      "integrity": "sha512-laJTa3Jb+VQpaC6DseHhF7dXVqHTfJPCRDaEbid/drOhgitgYku/letMUqOXFoWV0zIIUbjpdH2t+tYj4bQMRQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "min-indent": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/strip-json-comments": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz",
diff --git a/package.json b/package.json
index 53b4a7a..c971594 100644
--- a/package.json
+++ b/package.json
@@ -42,6 +42,10 @@
   },
   "devDependencies": {
     "@babel/core": "^7.25.2",
+    "@testing-library/dom": "^10.4.0",
+    "@testing-library/jest-native": "^5.4.3",
+    "@testing-library/react": "^16.2.0",
+    "@testing-library/react-native": "^13.0.1",
     "@types/jest": "^29.5.12",
     "@types/react": "~18.3.12",
     "@types/react-test-renderer": "^18.3.0",
-- 
2.39.5