feat: add text mode at file adapter

Signed-off-by: Taoyuesong <634774653@qq.com>

Author: Taoyuesong

Casbin.UnitTests/ModelTests/EnforcerTest.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using Casbin.Model;
@@ -700,28 +701,6 @@ public async Task TestInitEmptyAsync()
         await TestEnforceAsync(e, "alice", "/alice_data/resource1", "GET", true);
     }
 
-    [Fact]
-    public void TestInitEmptyByInputStream()
-    {
-        Enforcer e = new();
-
-        IModel m = DefaultModel.Create();
-        m.AddDef("r", "r", "sub, obj, act");
-        m.AddDef("p", "p", "sub, obj, act");
-        m.AddDef("e", "e", "some(where (p.eft == allow))");
-        m.AddDef("m", "m", "r.sub == p.sub && keyMatch(r.obj, p.obj) && regexMatch(r.act, p.act)");
-
-        using (FileStream fs = new("Examples/keymatch_policy.csv", FileMode.Open, FileAccess.Read,
-                   FileShare.ReadWrite))
-        {
-            FileAdapter a = new(fs);
-            e.SetModel(m);
-            e.SetAdapter(a);
-            e.LoadPolicy();
-
-            TestEnforce(e, "alice", "/alice_data/resource1", "GET", true);
-        }
-    }
 
     [Fact]
     public async Task TestInitEmptyByInputStreamAsync()

Casbin.UnitTests/PersistTests/FileTests/FileAdapterTest.cs

@@ -0,0 +1,109 @@
+using System.IO;
+using System.Threading.Tasks;
+using Casbin.Persist.Adapter.File;
+using Xunit;
+
+namespace Casbin.UnitTests.PersistTests.FileTests;
+
+public class FileAdapterTest
+{
+    [Fact]
+    public void TestLoadPolicy()
+    {
+        // Test read file
+        FileAdapter adapter = new("examples/rbac_policy.csv");
+        Enforcer e = new("examples/rbac_model.conf", adapter);
+        e.LoadPolicy();
+        e.BuildRoleLinks();
+
+        Assert.True(e.Enforce("alice", "data1", "read"));
+        Assert.False(e.Enforce("alice", "data1", "write"));
+        Assert.True(e.Enforce("alice", "data2", "read"));
+        Assert.True(e.Enforce("alice", "data2", "write"));
+        Assert.False(e.Enforce("bob", "data1", "read"));
+        Assert.False(e.Enforce("bob", "data1", "write"));
+        Assert.False(e.Enforce("bob", "data2", "read"));
+        Assert.True(e.Enforce("bob", "data2", "write"));
+
+        // Test read file by create API
+        adapter = FileAdapter.CreateFromFile("examples/rbac_policy.csv");
+        e = new("examples/rbac_model.conf", adapter);
+        e.LoadPolicy();
+        e.BuildRoleLinks();
+
+        Assert.True(e.Enforce("alice", "data1", "read"));
+        Assert.False(e.Enforce("alice", "data1", "write"));
+        Assert.True(e.Enforce("alice", "data2", "read"));
+        Assert.True(e.Enforce("alice", "data2", "write"));
+        Assert.False(e.Enforce("bob", "data1", "read"));
+        Assert.False(e.Enforce("bob", "data1", "write"));
+        Assert.False(e.Enforce("bob", "data2", "read"));
+        Assert.True(e.Enforce("bob", "data2", "write"));
+
+        // Test read text
+        string text = File.ReadAllText("examples/rbac_policy.csv");
+        adapter = FileAdapter.CreateFromText(text);
+        e = new("examples/rbac_model.conf", adapter);
+        e.LoadPolicy();
+        e.BuildRoleLinks();
+
+        Assert.True(e.Enforce("alice", "data1", "read"));
+        Assert.False(e.Enforce("alice", "data1", "write"));
+        Assert.True(e.Enforce("alice", "data2", "read"));
+        Assert.True(e.Enforce("alice", "data2", "write"));
+        Assert.False(e.Enforce("bob", "data1", "read"));
+        Assert.False(e.Enforce("bob", "data1", "write"));
+        Assert.False(e.Enforce("bob", "data2", "read"));
+        Assert.True(e.Enforce("bob", "data2", "write"));
+    }
+
+    [Fact]
+    public async Task TestLoadPolicyAsync()
+    {
+        // Test read file
+        FileAdapter adapter = new("examples/rbac_policy.csv");
+        Enforcer e = new("examples/rbac_model.conf", adapter);
+        await e.LoadPolicyAsync();
+        e.BuildRoleLinks();
+
+        Assert.True(await e.EnforceAsync("alice", "data1", "read"));
+        Assert.False(await e.EnforceAsync("alice", "data1", "write"));
+        Assert.True(await e.EnforceAsync("alice", "data2", "read"));
+        Assert.True(await e.EnforceAsync("alice", "data2", "write"));
+        Assert.False(await e.EnforceAsync("bob", "data1", "read"));
+        Assert.False(await e.EnforceAsync("bob", "data1", "write"));
+        Assert.False(await e.EnforceAsync("bob", "data2", "read"));
+        Assert.True(await e.EnforceAsync("bob", "data2", "write"));
+
+        // Test read file by create API
+        adapter = FileAdapter.CreateFromFile("examples/rbac_policy.csv");
+        e = new("examples/rbac_model.conf", adapter);
+        await e.LoadPolicyAsync();
+        e.BuildRoleLinks();
+
+        Assert.True(await e.EnforceAsync("alice", "data1", "read"));
+        Assert.False(await e.EnforceAsync("alice", "data1", "write"));
+        Assert.True(await e.EnforceAsync("alice", "data2", "read"));
+        Assert.True(await e.EnforceAsync("alice", "data2", "write"));
+        Assert.False(await e.EnforceAsync("bob", "data1", "read"));
+        Assert.False(await e.EnforceAsync("bob", "data1", "write"));
+        Assert.False(await e.EnforceAsync("bob", "data2", "read"));
+        Assert.True(await e.EnforceAsync("bob", "data2", "write"));
+
+        // Test read text
+        string text = File.ReadAllText("examples/rbac_policy.csv");
+        adapter = FileAdapter.CreateFromText(text);
+        e = new("examples/rbac_model.conf", adapter);
+        await e.LoadPolicyAsync();
+        e.BuildRoleLinks();
+
+        Assert.True(await e.EnforceAsync("alice", "data1", "read"));
+        Assert.False(await e.EnforceAsync("alice", "data1", "write"));
+        Assert.True(await e.EnforceAsync("alice", "data2", "read"));
+        Assert.True(await e.EnforceAsync("alice", "data2", "write"));
+        Assert.False(await e.EnforceAsync("bob", "data1", "read"));
+        Assert.False(await e.EnforceAsync("bob", "data1", "write"));
+        Assert.False(await e.EnforceAsync("bob", "data2", "read"));
+        Assert.True(await e.EnforceAsync("bob", "data2", "write"));
+    }
+}