From 94fd9c52828b628f2417aa85ce2fe694545424a6 Mon Sep 17 00:00:00 2001
From: Matthias Koeppe <mkoeppe@math.ucdavis.edu>
Date: Sun, 3 Oct 2021 09:48:50 -0700
Subject: [PATCH] is_{Real,Complex}[Double]Field: In doctests, add deprecation
 warning to expected output

---
 src/sage/rings/complex_double.pyx | 4 ++++
 src/sage/rings/complex_mpfr.pyx   | 4 ++++
 src/sage/rings/real_double.pyx    | 4 ++++
 src/sage/rings/real_mpfr.pyx      | 4 ++++
 4 files changed, 16 insertions(+)

diff --git a/src/sage/rings/complex_double.pyx b/src/sage/rings/complex_double.pyx
index 6977939b789..7a2d45d1028 100644
--- a/src/sage/rings/complex_double.pyx
+++ b/src/sage/rings/complex_double.pyx
@@ -123,6 +123,10 @@ def is_ComplexDoubleField(x):
 
         sage: from sage.rings.complex_double import is_ComplexDoubleField
         sage: is_ComplexDoubleField(CDF)
+        doctest:warning...
+        DeprecationWarning: is_ComplexDoubleField is deprecated;
+        use isinstance(..., sage.rings.abc.ComplexDoubleField) instead
+        See https://trac.sagemath.org/32610 for details.
         True
         sage: is_ComplexDoubleField(ComplexField(53))
         False
diff --git a/src/sage/rings/complex_mpfr.pyx b/src/sage/rings/complex_mpfr.pyx
index d51bbdbc469..3021ab5d177 100644
--- a/src/sage/rings/complex_mpfr.pyx
+++ b/src/sage/rings/complex_mpfr.pyx
@@ -169,6 +169,10 @@ def is_ComplexField(x):
 
         sage: from sage.rings.complex_mpfr import is_ComplexField as is_CF
         sage: is_CF(ComplexField())
+        doctest:warning...
+        DeprecationWarning: is_ComplexField is deprecated;
+        use isinstance(..., sage.rings.abc.ComplexField) instead
+        See https://trac.sagemath.org/32610 for details.
         True
         sage: is_CF(ComplexField(12))
         True
diff --git a/src/sage/rings/real_double.pyx b/src/sage/rings/real_double.pyx
index bccbc382bff..d3ad8ecfb0e 100644
--- a/src/sage/rings/real_double.pyx
+++ b/src/sage/rings/real_double.pyx
@@ -84,6 +84,10 @@ def is_RealDoubleField(x):
 
         sage: from sage.rings.real_double import is_RealDoubleField
         sage: is_RealDoubleField(RDF)
+        doctest:warning...
+        DeprecationWarning: is_RealDoubleField is deprecated;
+        use isinstance(..., sage.rings.abc.RealDoubleField) instead
+        See https://trac.sagemath.org/32610 for details.
         True
         sage: is_RealDoubleField(RealField(53))
         False
diff --git a/src/sage/rings/real_mpfr.pyx b/src/sage/rings/real_mpfr.pyx
index cefe99b6c1c..bd9b7931463 100644
--- a/src/sage/rings/real_mpfr.pyx
+++ b/src/sage/rings/real_mpfr.pyx
@@ -5906,6 +5906,10 @@ def is_RealField(x):
     EXAMPLES::
 
         sage: sage.rings.real_mpfr.is_RealField(RR)
+        doctest:warning...
+        DeprecationWarning: is_RealField is deprecated;
+        use isinstance(..., sage.rings.abc.RealField) instead
+        See https://trac.sagemath.org/32610 for details.
         True
         sage: sage.rings.real_mpfr.is_RealField(CC)
         False