support comparison with numbers in scientific notation

Author: lmiq

src/ShowMethodTesting.jl

@@ -87,8 +87,16 @@ function parse_show(x::String;
     for (k, v) in repl
         s = replace(s, k => v)
     end
-    # add spaces between digits and other characters (except dots), to interpret them as numbers
-    s = replace(s, r"(?<=\d)(?=[^\d.])|(?<=[^\d.])(?=\d)" => s" ")
+    #
+    # add spaces between digits and other characters (except dots and scientific notation), 
+    # to interpret them as numbers
+    # 
+    NUMBER_PATTERN = r"([+-]?\d*\.?\d+[eEfFrR][+-]?\d+|[+-]?\d*\.?\d+)"
+    # Replaces the matched number N with " N " (a space on each side).
+    # Then, it cleans up multiple consecutive spaces.
+    s = replace(s, NUMBER_PATTERN => s" \0 ")
+    # Clean up any leftover multiple spaces and surrounding whitespace.
+    s = replace(strip(s), r"\s+" => " ")
     if vector_simplify # keep only first and last array elements
         s = replace(s, r"(\[)([^,\]]+)(,.*,)([^,\]]+)(\])" => s"\1\2 \4\5")
     end

test/runtests.jl

@@ -12,20 +12,41 @@ end
         x::Int
         path::String
         vec::Vector{Float64}
+        a::Float32
+        b::Float32
+        c::Float64
+        d::Float64
     end
-    Base.show(io::IO, ::MIME"text/plain", a::A) = print(io, "Object with Int($(a.x)), $(a.path) and $(a.vec)")
-    a = A(1, "/usr/bin/bash", [1.0, π, 7.5, √2])
-    @test parse_show(a) ≈ "Object with Int(1), /usr/bin/bash and [1.0, 3.1415, 7.5, 1.4142]"
-    @test "Object with Int(1), /usr/bin/bash and [1.0, 3.1415, 7.5, 1.4142]" ≈ parse_show(a)
-    @test parse_show("Object with Int(1), /usr/bin/bash and [1.0, 3.1415, 7.5, 1.4142]") ≈ parse_show(a)
-    @test_throws AssertionError parse_show(a) ≈ "Object with Int(2), /usr/bin/bash and [1.0, 3.141592653589793, 7.5, 1.4142135623730951]"
-    @test !isapprox(parse_show(a), "Object with Int(2), /usr/bin/bash and [1.0, 3.141592653589793, 7.5, 1.4142135623730951]"; assertion_error=false)
+    Base.show(io::IO, ::MIME"text/plain", a::A) = 
+        print(io, """
+            Object with Int($(a.x)), $(a.path) and $(a.vec) vector.
+            a, b, c, d = $(a.a), $(a.b), $(a.c), $(a.d)
+        """)
+    a = A(1, "/usr/bin/bash", [1.0, π, 7.5, √2], 1.3f-17, 2.6f17, 1.3e-17, 2.6f17)
+    @test parse_show(a) ≈ """
+        Object with Int(1), /usr/bin/bash and [1.0, 3.141592653589793, 7.5, 1.4142135623730951] vector.
+        a, b, c, d = 1.3e-17, 2.6e17, 1.3e-17, 2.6000000279170253e17
+    """
+    @test """ 
+        Object with Int(1), /usr/bin/bash and [1.0, 3.141592653589793, 7.5, 1.4142135623730951] vector.
+        a, b, c, d = 1.3e-17, 2.6e17, 1.3e-17, 2.6000000279170253e17
+    """ ≈ parse_show(a)
+    @test parse_show("""
+        Object with Int(1), /usr/bin/bash and [1.0, 3.141592653589793, 7.5, 1.4142135623730951] vector.
+        a, b, c, d = 1.3e-17, 2.6e17, 1.3e-17, 2.6000000279170253e17
+    """) ≈ parse_show(a)
+    @test_throws "comparison failed" parse_show(a) ≈ "Object with Int(2), /usr/bin/bash and [1.0, 3.141592653589793, 7.5, 1.4142135623730951]"
+    # do not throw error with assertion_error == false
+    @test !isapprox(parse_show(a), """
+    Object with Int(2), /usr/bin/bash and [1.0, 3.141592653589793, 7.5, 1.4142135623730951]"  
+    """; assertion_error=false)
     # Test show method
     @test contains(repr("text/plain", parse_show(a)), "Object with Int( 1 )")
-    @test parse_show([a, a, a, a]; repl=["/usr/bin/bash" => "", r"^((?:[^\n]*\n){3}).*"s => s"\1"]) ≈ """
-        4 -element Vector{A}:
-        Object with Int( 1 ),  and [ 1.0 1.4142135623730951 ]
-        Object with Int( 1 ),  and [ 1.0 1.4142135623730951 ]
+    # Test custom multiple substitions (keep only first 3 lines)
+    @test parse_show([a, a, a, a]; repl=["/usr/bin/bash" => "", r"^((?:[^\n]*\n){3}).*"s => s"\1"], vector_simplify=false) ≈ """
+    4-element Vector{A}:
+    A(1, "/usr/bin/bash", [1.0, 3.141592653589793, 7.5, 1.4142135623730951], 1.3f-17, 2.6f17, 1.3e-17, 2.6000000279170253e17)
+    A(1, "/usr/bin/bash", [1.0, 3.141592653589793, 7.5, 1.4142135623730951], 1.3f-17, 2.6f17, 1.3e-17, 2.6000000279170253e17)
     """
     @test_throws ArgumentError parse_show([a, a, a, a]; repl=["a", "b"])
     # compact printing