diff --git a/README.md b/README.md
index 7a67857..38357a6 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,16 @@
 # Lockgate
 
-Modules to calcualte the forces on lock gates.
+Modules to calculate the forces on lock gates.
+It consists of different modules to calcualte the force for different situations.
+The following modules are identified:
+
+1. Lockgate1: 
+2. Lockgate2: 
+3. Lockgate3: 
+4. Lockgate4: 
+5. Lockgate5: 
+6. Lockgate6: 
+7. Lockgate7: 
+8. Lockgate8: 
+
+More info can be found on read the docs
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index a1e5722..642651f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ dynamic = ["version"]
 authors = [
     { name = "Sam van der Zwan", email = "sam.vanderzwan@deltares.nl" },
 ]
-description = "Modules to calcualte the forces on lock gates."
+description = "Modules to calculate the forces on lock gates."
 readme = "README.md"
 classifiers = [
     "Programming Language :: Python :: 3",
@@ -19,7 +19,9 @@ classifiers = [
     "Topic :: Scientific/Engineering :: Physics",
 ]
 
-dependencies = ["coloredlogs~=15.0.1"]
+dependencies = ["coloredlogs~=15.0.1",
+                "numpy~=1.21.2",
+]
 
 [project.optional-dependencies]
 dev = [
diff --git a/src/lockgate/lockgate3/LGATE3.py b/src/lockgate/lockgate3/LGATE3.py
index fe44338..92bb054 100644
--- a/src/lockgate/lockgate3/LGATE3.py
+++ b/src/lockgate/lockgate3/LGATE3.py
@@ -205,5 +205,5 @@ def gate7(fileName):
   fileout.close()
 
 if __name__ == "__main__":
-    filename = 'B001'
+    filename = r'.\test_data\lockgate3\B001'
     gate7(filename)
diff --git a/src/lockgate/lockgate8/REFL2.py b/src/lockgate/lockgate8/REFL2.py
index 3f38723..a0e455b 100644
--- a/src/lockgate/lockgate8/REFL2.py
+++ b/src/lockgate/lockgate8/REFL2.py
@@ -292,7 +292,9 @@ def refl(fileName, maxsteps):
     alfa = (hlm-hv)/na0
     print(alfa)
     fileout.close()
+
+
 if __name__ == "__main__":
     maxsteps = 500 # Number of steps going over a period of wave between two sections
-    filename = 'R21'
+    filename = r'.\test_data\lockgate8\R21'
     refl(filename, maxsteps)
diff --git a/test_data/lockgate3/B001.IN b/test_data/lockgate3/B001.IN
new file mode 100644
index 0000000..5b7a66b
--- /dev/null
+++ b/test_data/lockgate3/B001.IN
@@ -0,0 +1,7 @@
+-5.00     12.00
+-4.90     12.50     0.40     1.00    0.00
+13.00      1.50     
+ 0.90      0.70     0.90     0.70
+ 0.00
+1000.      0.02
+-.01309
\ No newline at end of file
diff --git a/test_data/lockgate8/R10.IN b/test_data/lockgate8/R10.IN
new file mode 100644
index 0000000..792fdf6
--- /dev/null
+++ b/test_data/lockgate8/R10.IN
@@ -0,0 +1,15 @@
+** Hv		Zk
+ 0.00     -4.00
+** LAB		LCD		LEF			LGH		LIJ		LKL 
+ 3.75      7.50      7.50     7.50     7.50     3.75
+** BAB		BCD		BEF			BGH		BIJ		BKL
+25.00     22.00     19.00    16.00    13.00    10.00
+** dt		tinit	tend
+ 0.05      0.00    240.00
+** NTM
+ 4
+** TM		QM
+-10.00     10.00
+  0.00     10.00
+100.00     10.00
+500.00     10.00
diff --git a/test_data/lockgate8/R20.IN b/test_data/lockgate8/R20.IN
new file mode 100644
index 0000000..d0ede3f
--- /dev/null
+++ b/test_data/lockgate8/R20.IN
@@ -0,0 +1,9 @@
+ 0.00     -4.00
+ 7.50     15.00     15.00    15.00    15.00     7.50
+40.00     34.00     28.00    22.00    16.00    10.00
+ 0.1       0.00    240.00
+ 4
+-10.00     10.00
+  0.00     10.00
+100.00     10.00
+500.00     10.00
diff --git a/test_data/lockgate8/R21.IN b/test_data/lockgate8/R21.IN
new file mode 100644
index 0000000..f23721b
--- /dev/null
+++ b/test_data/lockgate8/R21.IN
@@ -0,0 +1,9 @@
+ 0.00     -4.00
+ 7.50     15.00     15.00    15.00    15.00     7.50
+40.00     40.00     40.00    40.00    40.00    40.00
+ 0.1       0.00    240.00
+ 4
+-10.00     10.00
+  0.00     10.00
+100.00     10.00
+500.00     10.00