first commit

apps/backend/internal/app/app_test.go

@@ -0,0 +1,72 @@
+package app
+
+import "testing"
+
+func TestValidateStoreRuntimeMode(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name          string
+		mode          string
+		allowInMemory bool
+		expectError   bool
+	}{
+		{
+			name:          "development allows in-memory store",
+			mode:          "development",
+			allowInMemory: false,
+			expectError:   false,
+		},
+		{
+			name:          "production rejects in-memory store by default",
+			mode:          "production",
+			allowInMemory: false,
+			expectError:   true,
+		},
+		{
+			name:          "non-development can be explicitly overridden",
+			mode:          "staging",
+			allowInMemory: true,
+			expectError:   false,
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			t.Parallel()
+			err := validateStoreRuntimeMode(test.mode, test.allowInMemory)
+			if test.expectError && err == nil {
+				t.Fatalf("expected error for mode=%q allowInMemory=%v", test.mode, test.allowInMemory)
+			}
+			if !test.expectError && err != nil {
+				t.Fatalf("did not expect error for mode=%q allowInMemory=%v: %v", test.mode, test.allowInMemory, err)
+			}
+		})
+	}
+}
+
+func TestInMemoryStoreAllowed(t *testing.T) {
+	tests := []struct {
+		name    string
+		value   string
+		allowed bool
+	}{
+		{name: "empty", value: "", allowed: false},
+		{name: "true", value: "true", allowed: true},
+		{name: "uppercase true", value: "TRUE", allowed: true},
+		{name: "one", value: "1", allowed: true},
+		{name: "yes", value: "yes", allowed: true},
+		{name: "off", value: "off", allowed: false},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			t.Setenv("ALLOW_INMEMORY_STORE", test.value)
+			if got := inMemoryStoreAllowed(); got != test.allowed {
+				t.Fatalf("inMemoryStoreAllowed() = %v, want %v for %q", got, test.allowed, test.value)
+			}
+		})
+	}
+}