diff --git a/tests/optical_component/test_AHotOpticalComponent.py b/tests/optical_component/test_AHotOpticalComponent.py
index b7e3ec4..37b9fcd 100644
--- a/tests/optical_component/test_AHotOpticalComponent.py
+++ b/tests/optical_component/test_AHotOpticalComponent.py
@@ -21,7 +21,7 @@ class TestAHotOpticalComponent(TestCase):
     wl = np.arange(201, 205, 1) << u.nm
 
     def setUp(self):
-        self.target = FileTarget("data/target/target_demo_1.csv")
+        self.target = FileTarget("data/target/target_demo_1.csv", self.wl)
 
     def test___init__(self):
         comp = HotOpticalComponent(self.target, SpectralQty(self.wl, np.repeat(0.5, 4) << u.dimensionless_unscaled),
diff --git a/tests/optical_component/test_Atmosphere.py b/tests/optical_component/test_Atmosphere.py
index 13bc0ba..91bf156 100644
--- a/tests/optical_component/test_Atmosphere.py
+++ b/tests/optical_component/test_Atmosphere.py
@@ -6,7 +6,7 @@ import astropy.units as u
 
 class TestAtmosphere(TestCase):
     def setUp(self):
-        self.target = FileTarget("data/target/target_demo_1.csv")
+        self.target = FileTarget("data/target/target_demo_1.csv", np.arange(200, 208) << u.nm)
         self.atmosphere = Atmosphere(self.target, "data/atmosphere/atmosphere_transmittance_1.csv",
                                      "data/atmosphere/atmosphere_emission_1.csv")
 
diff --git a/tests/optical_component/test_BeamSplitter.py b/tests/optical_component/test_BeamSplitter.py
index 4fb5d8a..8b6061c 100644
--- a/tests/optical_component/test_BeamSplitter.py
+++ b/tests/optical_component/test_BeamSplitter.py
@@ -10,7 +10,7 @@ class TestBeamSplitter(TestCase):
     wl = np.arange(201, 205, 1) << u.nm
 
     def setUp(self):
-        self.target = FileTarget("data/target/target_demo_1.csv")
+        self.target = FileTarget("data/target/target_demo_1.csv", self.wl)
         self.splitter = BeamSplitter(self.target, "data/beamsplitter/beamsplitter_transmittance.csv", 0.5,
                                      temp=300 * u.K)
 
diff --git a/tests/optical_component/test_Filter.py b/tests/optical_component/test_Filter.py
index 4eed642..ebb5c02 100644
--- a/tests/optical_component/test_Filter.py
+++ b/tests/optical_component/test_Filter.py
@@ -13,7 +13,7 @@ class TestFilter(TestCase):
                                                              0.0, 0.0] << u.W / (u.m ** 2 * u.nm)))
 
     def test_fromFile(self):
-        target = FileTarget("data/target/target_demo_1.csv")
+        target = FileTarget("data/target/target_demo_1.csv", np.arange(200, 210, 1) << u.nm)
         filt = Filter.fromFile(target, "data/filter/filter_transmittance.csv")
         self.assertEqual(filt.calcSignal(), SpectralQty(np.arange(200, 210, 1) << u.nm,
                                                         [1.10e-15, 1.20e-15, 1.30e-15, 1.40e-15, 1.35e-15, 1.44e-15,
diff --git a/tests/optical_component/test_Lens.py b/tests/optical_component/test_Lens.py
index 71d12ab..edd5595 100644
--- a/tests/optical_component/test_Lens.py
+++ b/tests/optical_component/test_Lens.py
@@ -10,7 +10,7 @@ class TestLens(TestCase):
     wl = np.arange(201, 205, 1) << u.nm
 
     def setUp(self):
-        self.target = FileTarget("data/target/target_demo_1.csv")
+        self.target = FileTarget("data/target/target_demo_1.csv", self.wl)
         self.lens = Lens(self.target, "data/lens/lens_transmittance.csv", 0.5, temp=300 * u.K)
 
     def test___init__(self):
diff --git a/tests/optical_component/test_Mirror.py b/tests/optical_component/test_Mirror.py
index 20060d4..5669673 100644
--- a/tests/optical_component/test_Mirror.py
+++ b/tests/optical_component/test_Mirror.py
@@ -10,7 +10,7 @@ class TestMirror(TestCase):
     wl = np.arange(201, 205, 1) << u.nm
 
     def setUp(self):
-        self.target = FileTarget("data/target/target_demo_1.csv")
+        self.target = FileTarget("data/target/target_demo_1.csv", self.wl)
         self.mirror = Mirror(self.target, "data/mirror/mirror_reflectance.csv", 0.5, temp=300 * u.K)
 
     def test___init__(self):
diff --git a/tests/optical_component/test_StrayLight.py b/tests/optical_component/test_StrayLight.py
index 032b645..2d7f0f2 100644
--- a/tests/optical_component/test_StrayLight.py
+++ b/tests/optical_component/test_StrayLight.py
@@ -6,7 +6,7 @@ import astropy.units as u
 
 class TestStrayLight(TestCase):
     def setUp(self):
-        self.target = FileTarget("data/target/target_demo_1.csv")
+        self.target = FileTarget("data/target/target_demo_1.csv", np.arange(200, 210) << u.nm)
         self.zodiac = StrayLight(self.target, "data/straylight/zodiacal_emission_1.csv")
 
     def test_calcSignal(self):