adding missing test files

tests/expectations/expectation_ss_old_steadystate.m

+function [ys_, check_] = expectation_ss_old_steadystate(ys_orig_, exo_)
+% Steady state generated by Dynare preprocessor
+    ys_=zeros(6,1);
+    global M_
+    ys_(4)=0;
+    ys_(6)=0;
+    ys_(5)=0.3333333333333333;
+    ys_(3)=((1/M_.params(1)-(1-M_.params(4)))/(M_.params(3)*ys_(5)^(1-M_.params(3))))^(1/(M_.params(3)-1));
+    ys_(1)=ys_(5)^(1-M_.params(3))*ys_(3)^M_.params(3);
+    ys_(2)=ys_(1)-M_.params(4)*ys_(3);
+    M_.params(5)=(1-M_.params(3))*ys_(1)/(ys_(2)*ys_(5)^(1+M_.params(6)));
+    check_=0;
+end

tests/steady_state/walsh1_old_ss_steadystate.m

+function [ys,check] = wlash1_old_ss_steadystate(ys0,exo)
+    global M_
+    
+    check = 0;
+    
+    params = M_.params;
+    alpha = params(1);
+    beta = params(2);
+    delta = params(3);
+    gamm = params(4);
+    phi1 = params(5);
+    eta = params(6);
+    a = params(7);
+    b = params(8);
+    rho = params(9);
+    phi2 = params(10);
+    Psi = params(11);
+    thetass = params(12);
+ 
+    pi = thetass-1;
+    en = 1/3;
+    eR = 1/beta;
+    y_k = (1/alpha)*(1/beta-1+delta);
+    ek = en*y_k^(-1/(1-alpha));
+    ec = ek*(y_k-delta);
+    em = ec*(a/(1-a))^(-1/b)*((thetass-beta)/thetass)^(-1/b);
+    ey = ek*y_k;
+    Xss = a*ec^(1-b)*(1+(a/(1-a))^(-1/b)*((thetass-beta)/thetass)^((b-1)/b));
+    Psi = (1-alpha)*(ey/en)*Xss^((b-phi1)/(1-b))*a*ec^(-b)*(1-en)^eta;
+    n = log(en);
+    k = log(ek);
+    m = log(em);
+    c = log(ec);
+    y = log(ey);
+    R = log(eR);
+    z = 0;
+    u = 0;
+    
+    ys = [y c k m n R pi z u]';
+    M_.params(11) = Psi;
+