From d29e6a64e1d14b521d6f179b73e9abfc9acdcf16 Mon Sep 17 00:00:00 2001
From: Tommy Hofmann <thofma@gmail.com>
Date: Tue, 14 Nov 2023 18:23:00 +0100
Subject: [PATCH] Reduce number of tests for is_isometric_with_isometry (#1286)

---
 test/QuadForm/Quad/Spaces.jl | 64 +++++++++++++++++++-----------------
 test/runtests.jl             |  4 +--
 2 files changed, 35 insertions(+), 33 deletions(-)

diff --git a/test/QuadForm/Quad/Spaces.jl b/test/QuadForm/Quad/Spaces.jl
index 41a3b0156c..44ff78630e 100644
--- a/test/QuadForm/Quad/Spaces.jl
+++ b/test/QuadForm/Quad/Spaces.jl
@@ -158,40 +158,42 @@
   @test fl
 
   F,a = number_field(x^2 - 2, :a)
-  tt = [[-4, 13, -5, 16],
-      [-4, 19, 5, -24],
-      [1, -1, 0, 1],
-      [3, 8, -2, -5],
-      [-3, -13, 4, 17],
-      [7, 19, -3, -8],
-      [3, -17, -1, 6],
-      [11, -9, 5, -4],
-      [-5, 7, -3, 4],
-      [10, 27, -3, -8]]
-  dd = [[7//5*a - 5//8, -2//9],
-      [-a + 8//3, 4//5*a - 4//3],
-      [2*a - 9//4, 10//9*a - 3],
-      [-a - 1, -9//7*a - 4],
-      [-9//2, 1//2*a - 5//4],
-      [a - 1//3, 1//2*a - 7//4],
-      [-3//7*a - 5//6, 9//2*a + 5//9],
-      [-1//2*a + 3//4, 1//10*a - 10//9],
-      [2//3*a + 1//5, 3//10*a + 1//4],
-      [3//5*a + 7//9, -1//2*a + 1//9],
-      [-1//3, a - 10//7],
-      [6//5, -9//2*a - 7//3],
-      [5//3*a - 1, -5//7*a + 1//9],
-      [4//5*a + 1, -10//9*a + 7//5],
-      [2//5*a - 6//5, -3//4*a - 5],
-      [-2*a + 2, -1//8*a + 4//7],
-      [a - 1//8, 2*a - 10//7],
-      [5//4, 9*a + 1],
-      [-5//7*a - 1//3, -3//5*a + 4//7],
-      [-5//3*a + 1//2, -1//9*a - 8//9]]
+  tt = [#[-4, 13, -5, 16],
+        #[-4, 19, 5, -24],
+        [1, -1, 0, 1],
+      #[3, 8, -2, -5],
+      #[-3, -13, 4, 17],
+      #[7, 19, -3, -8],
+      #[3, -17, -1, 6],
+      #[11, -9, 5, -4],
+      #[-5, 7, -3, 4],
+      #[10, 27, -3, -8]
+      ]
+  dd = [#[7//5*a - 5//8, -2//9],
+      #[-a + 8//3, 4//5*a - 4//3],
+      #[2*a - 9//4, 10//9*a - 3],
+      [-a - 1, -9*7*a - 4*49],
+      #[-9//2, 1//2*a - 5//4],
+      #[a - 1//3, 1//2*a - 7//4],
+      #[-3//7*a - 5//6, 9//2*a + 5//9],
+      #[-1//2*a + 3//4, 1//10*a - 10//9],
+      #[2//3*a + 1//5, 3//10*a + 1//4],
+      #[3//5*a + 7//9, -1//2*a + 1//9],
+      #[-1//3, a - 10//7],
+      #[6//5, -9//2*a - 7//3],
+      #[5//3*a - 1, -5//7*a + 1//9],
+      #[4//5*a + 1, -10//9*a + 7//5],
+      #[2//5*a - 6//5, -3//4*a - 5],
+      #[-2*a + 2, -1//8*a + 4//7],
+      #[a - 1//8, 2*a - 10//7],
+      #[5//4, 9*a + 1],
+      #[-5//7*a - 1//3, -3//5*a + 4//7],
+      #[-5//3*a + 1//2, -1//9*a - 8//9]
+     ]
   tt = [matrix(F, 2, 2, [F(s) for s in t]) for t in tt]
   dd = [diagonal_matrix([F(s) for s in d]) for d in dd]
 
-  for i in 1:10
+  for i in 1:1
     t = rand(tt)
     d = rand(dd)
     q1 = quadratic_space(F, d)
diff --git a/test/runtests.jl b/test/runtests.jl
index c300ce263d..a0204408c0 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -121,8 +121,8 @@ end
 if fl === "true" && !no_parallel && !Sys.iswindows()
   isparallel = true
   # CPU_THREADS reports number of logical cores (including hyperthreading)
-  # So be pessimistic and divide by 2 on Linux (less memory?)
-  n_procs = div(Sys.CPU_THREADS, Sys.islinux() ? 2 : 1)
+  # So be pessimistic and divide by 2
+  n_procs = min(div(Sys.CPU_THREADS, 2), 1)
   if Sys.islinux()
     # there is not enough memory to support >= 2 jobs
     isparallel = false