Some version (unittest) blocks removed

std/process.d

@@ -1163,8 +1163,9 @@ version (Posix) @system unittest
     version (Posix)
     {
         import std.path : buildPath;
-        import std.file : remove, write, setAttributes;
+        import std.file : remove, write, setAttributes, tempDir;
         import core.sys.posix.sys.stat : S_IRUSR, S_IWUSR, S_IXUSR, S_IRGRP, S_IXGRP, S_IROTH, S_IXOTH;
+        import std.conv : to;
         string deleteme = buildPath(tempDir(), "deleteme.std.process.unittest.pid") ~ to!string(thisProcessID);
         write(deleteme, "");
         scope(exit) remove(deleteme);
@@ -1177,6 +1178,7 @@ version (Posix) @system unittest
 @system unittest // Specifying a working directory.
 {
     import std.path;
+    import std.file;
     TestScript prog = "echo foo>bar";
 
     auto directory = uniqueTempPath();
@@ -1191,6 +1193,7 @@ version (Posix) @system unittest
 @system unittest // Specifying a bad working directory.
 {
     import std.exception : assertThrown;
+    import std.file;
     TestScript prog = "echo";
 
     auto directory = uniqueTempPath();
@@ -1230,6 +1233,7 @@ version (Posix) @system unittest
 @system unittest // Reopening the standard streams (issue 13258)
 {
     import std.string;
+    import std.file;
     void fun()
     {
         spawnShell("echo foo").wait();
@@ -1360,6 +1364,7 @@ version (Windows)
 @system unittest
 {
     import std.string;
+    import std.conv : text;
     TestScript prog = "echo %0 %*";
     auto outputFn = uniqueTempPath();
     scope(exit) if (exists(outputFn)) remove(outputFn);
@@ -2771,6 +2776,7 @@ private struct TestScript
         version (Posix)
         {
             import core.sys.posix.sys.stat : chmod;
+            import std.conv : octal;
             chmod(path.tempCString(), octal!777);
         }
     }
@@ -3104,6 +3110,7 @@ private:
     {
         import std.algorithm.iteration : map;
         import std.array : array;
+        import std.conv : to;
         auto lpCommandLine = (to!(WCHAR[])(line) ~ '\0').ptr;
         int numArgs;
         auto args = CommandLineToArgvW(lpCommandLine, &numArgs);
@@ -3115,6 +3122,7 @@ private:
 
     @system unittest
     {
+        import std.conv : text;
         string[] testStrings = [
             `Hello`,
             `Hello, world`,
@@ -3778,11 +3786,6 @@ version (Posix)
 {
     import core.sys.posix.stdlib;
 }
-version (unittest)
-{
-    import std.conv, std.file, std.random;
-}
-
 
 private void toAStringz(in string[] a, const(char)**az)
 {

std/typecons.d

@@ -5971,16 +5971,14 @@ private template TypeMod(T)
     enum TypeMod = cast(TypeModifier)(mod1 | mod2);
 }
 
-version (unittest)
+@system unittest
 {
-    private template UnittestFuncInfo(alias f)
+    template UnittestFuncInfo(alias f)
     {
         enum name = __traits(identifier, f);
         alias type = FunctionTypeOf!f;
     }
-}
-@system unittest
-{
+
     class A
     {
         int draw() { return 1; }

std/uni.d

@@ -715,33 +715,6 @@ debug(std_uni) import std.stdio; // writefln, writeln
 
 private:
 
-version (unittest)
-{
-private:
-    struct TestAliasedString
-    {
-        string get() @safe @nogc pure nothrow { return _s; }
-        alias get this;
-        @disable this(this);
-        string _s;
-    }
-
-    bool testAliasedString(alias func, Args...)(string s, Args args)
-    {
-        import std.algorithm.comparison : equal;
-        auto a = func(TestAliasedString(s), args);
-        auto b = func(s, args);
-        static if (is(typeof(equal(a, b))))
-        {
-            // For ranges, compare contents instead of object identity.
-            return equal(a, b);
-        }
-        else
-        {
-            return a == b;
-        }
-    }
-}
 
 void copyBackwards(T,U)(T[] src, U[] dest)
 {
@@ -3509,14 +3482,10 @@ pure @safe unittest// Uint24 tests
     }}
 }
 
-version (unittest)
-{
-    private alias AllSets = AliasSeq!(InversionList!GcPolicy, InversionList!ReallocPolicy);
-}
-
 pure @safe unittest// core set primitives test
 {
     import std.conv : text;
+    alias AllSets = AliasSeq!(InversionList!GcPolicy, InversionList!ReallocPolicy);
     foreach (CodeList; AllSets)
     {
         CodeList a;
@@ -3638,6 +3607,7 @@ pure @safe unittest
 pure @safe unittest
 {   // full set operations
     import std.conv : text;
+    alias AllSets = AliasSeq!(InversionList!GcPolicy, InversionList!ReallocPolicy);
     foreach (CodeList; AllSets)
     {
         CodeList a, b, c, d;
@@ -9255,8 +9225,32 @@ if (isConvertibleToString!Range)
 
 @safe unittest
 {
+    static struct TestAliasedString
+    {
+        string get() @safe @nogc pure nothrow { return _s; }
+        alias get this;
+        @disable this(this);
+        string _s;
+    }
+
+    static bool testAliasedString(alias func, Args...)(string s, Args args)
+    {
+        import std.algorithm.comparison : equal;
+        auto a = func(TestAliasedString(s), args);
+        auto b = func(s, args);
+        static if (is(typeof(equal(a, b))))
+        {
+            // For ranges, compare contents instead of object identity.
+            return equal(a, b);
+        }
+        else
+        {
+            return a == b;
+        }
+    }
     assert(testAliasedString!asLowerCase("hEllo"));
     assert(testAliasedString!asUpperCase("hEllo"));
+    assert(testAliasedString!asCapitalized("hEllo"));
 }
 
 @safe unittest
@@ -9442,11 +9436,6 @@ if (isConvertibleToString!Range)
     return asCapitalized!(StringTypeOf!Range)(str);
 }
 
-@safe unittest
-{
-    assert(testAliasedString!asCapitalized("hEllo"));
-}
-
 @safe pure nothrow @nogc unittest
 {
     auto r = "hEllo".asCapitalized();