remove read succesS

pkg/commands/cache_test.go

@@ -21,7 +21,7 @@ import (
 )
 
 func Test_caching(t *testing.T) {
-	c := caching{layer: fakeLayer{}, readSuccess: true}
+	c := caching{layer: fakeLayer{}}
 
 	actual := c.Layer().(fakeLayer)
 	expected := fakeLayer{}
@@ -29,8 +29,4 @@ func Test_caching(t *testing.T) {
 	if actualLen != expectedLen {
 		t.Errorf("expected layer tar content to be %v but was %v", expectedLen, actualLen)
 	}
-
-	if !c.ReadSuccess() {
-		t.Errorf("expected ReadSuccess to be %v but was %v", true, c.ReadSuccess())
-	}
 }

pkg/commands/copy_test.go

@@ -385,10 +385,6 @@ func Test_CachingCopyCommand_ExecuteCommand(t *testing.T) {
 			} else if c.layer != nil && !tc.expectLayer {
 				t.Error("expected the command to have no layer set but instead found a layer")
 			}
-
-			if c.readSuccess != tc.expectLayer {
-				t.Errorf("expected read success to be %v but was %v", tc.expectLayer, c.readSuccess)
-			}
 		})
 	}
 }

pkg/commands/run_test.go

@@ -313,10 +313,6 @@ func Test_CachingRunCommand_ExecuteCommand(t *testing.T) {
 			} else if c.layer != nil && !tc.expectLayer {
 				t.Error("expected the command to have no layer set but instead found a layer")
 			}
-
-			if c.readSuccess != tc.expectLayer {
-				t.Errorf("expected read success to be %v but was %v", tc.expectLayer, c.readSuccess)
-			}
 		})
 	}
 }