Improve Travis Build & Test Coverage

Build Wren for more targets, and run the test suite on both 32 and 64
bit builds.

 * Update the build config to test both with and without NAN_TAGGING
   defined.

 * Updatest `util/test.py` to take the executable suffix as a
   parameter. This allows the makefile to control which binaries will be
   tested.

   Adds a new target to the makefile to be run by travis, this runs the
   test suite against all of the configurations it builds.

 * Gcc on some 32 bit platforms was complaining about numeric overflows
   when -INFINITY was used. Update the logic for converting a double to
   a string to not explicitly check against the literal values.

 * Make CI builds run the tests on both 64 _and_ 32 bit builds.

 * If I limit the number of CPUs on my MBP I can get some of the tests
   to time out, I'm imagining that the specs of the Travis Macs means
   that the same is happening there too. Updated the test script to
   allow an extra few seconds for the test to complete successfully
   before killing it.

 * Due to slight differences in accuracy in some computations tests were
   failing on 32 bit builds. Stop comparing things quite as exactly in
   the cases where it is causing issues.

   For some reason 12.34 was refusing to compare equal to itself. Bad
   show 12.34 :-/. I've also updated the test so it doesn't leak handles
   even if the assertions fail.

 * Double-cast from `double` to `uint32_t` to prevent undefined
   behaviour on overflow of basic integers. This should hopefully
   prevent 32 bit test failures on Linux.

 * Move to a version of LibUV with a fix for the 32 bit build error on
   Travis.

.travis.yml

@@ -1,7 +1,13 @@
 language: c
+os:
+ - osx
+ - linux
 compiler:
   - gcc
   - clang
+env:
+  - WREN_OPTIONS="" CI_ARCHS="ci_32 ci_64"
+  - WREN_OPTIONS="-DWREN_NAN_TAGGING=0" CI_ARCHS="ci_64"
 # Travis VMs are 64-bit but we compile both for 32 and 64 bit. To enable the
 # 32-bit builds to work, we need gcc-multilib.
 addons:
@@ -10,4 +16,4 @@ addons:
     - gcc-multilib
     - g++-multilib
 sudo: false # Enable container-based builds.
-script: make all && make test
+script: make WREN_CFLAGS=${WREN_OPTIONS} ${CI_ARCHS}

Makefile

@@ -44,6 +44,28 @@ all: debug release
 	$(V) $(MAKE) -f util/wren.mk MODE=debug ARCH=64
 	$(V) $(MAKE) -f util/wren.mk MODE=debug LANG=cpp ARCH=64
 
+ci: ci_32 ci_64
+
+ci_32:
+	$(V) $(MAKE) -f util/wren.mk MODE=debug   LANG=c   ARCH=32 vm cli test
+	$(V) ./util/test.py --suffix=d-32 $(suite)
+	$(V) $(MAKE) -f util/wren.mk MODE=debug   LANG=cpp ARCH=32 vm cli test
+	$(V) ./util/test.py --suffix=d-cpp-32 $(suite)
+	$(V) $(MAKE) -f util/wren.mk MODE=release LANG=c   ARCH=32 vm cli test
+	$(V) ./util/test.py --suffix=-32 $(suite)
+	$(V) $(MAKE) -f util/wren.mk MODE=release LANG=cpp ARCH=32 vm cli test
+	$(V) ./util/test.py --suffix=-cpp-32 $(suite)
+
+ci_64:
+	$(V) $(MAKE) -f util/wren.mk MODE=debug   LANG=c   ARCH=64 vm cli test
+	$(V) ./util/test.py --suffix=d-64 $(suite)
+	$(V) $(MAKE) -f util/wren.mk MODE=debug   LANG=cpp ARCH=64 vm cli test
+	$(V) ./util/test.py --suffix=d-cpp-64 $(suite)
+	$(V) $(MAKE) -f util/wren.mk MODE=release LANG=c   ARCH=64 vm cli test
+	$(V) ./util/test.py --suffix=-64 $(suite)
+	$(V) $(MAKE) -f util/wren.mk MODE=release LANG=cpp ARCH=64 vm cli test
+	$(V) ./util/test.py --suffix=-cpp-64 $(suite)
+
 # Remove all build outputs and intermediate files. Does not remove downloaded
 # dependencies. Use cleanall for that.
 clean:
@@ -80,4 +102,4 @@ gh-pages: docs
 amalgamation: src/include/wren.h src/vm/*.h src/vm/*.c
 	./util/generate_amalgamation.py > build/wren.c
 
-.PHONY: all amalgamation builtin clean debug docs gh-pages release test vm watchdocs
+.PHONY: all amalgamation builtin clean debug docs gh-pages release test vm watchdocs ci ci_32 ci_64

example/syntax.wren

@@ -129,8 +129,10 @@ class Literals is SyntaxExample {
     3.14159
     1.0
     -12.34
-    0xdeadbeef
-    0x1234567890ABCDEF
+    0x1000000
+// Literals larger than 0x1000000 are only valid in 64 bit builds
+//    0xdeadbeef
+//    0x1234567890ABCDEF
   }
 
   strings {

src/vm/wren_core.c

@@ -618,7 +618,9 @@ DEF_PRIMITIVE(num_bangeq)
 DEF_PRIMITIVE(num_bitwiseNot)
 {
   // Bitwise operators always work on 32-bit unsigned ints.
-  RETURN_NUM(~(uint32_t)AS_NUM(args[0]));
+  uint64_t wideVal = AS_NUM(args[0]);
+  uint32_t val = wideVal & 0xFFFFFFFF;
+  RETURN_NUM(~(uint32_t)val);
 }
 
 DEF_PRIMITIVE(num_dotDot)

src/vm/wren_value.c

@@ -742,9 +742,16 @@ Value wrenNumToString(WrenVM* vm, double value)
   // Corner case: If the value is NaN, different versions of libc produce
   // different outputs (some will format it signed and some won't). To get
   // reliable output, handle that ourselves.
-  if (value != value) return CONST_STRING(vm, "nan");
-  if (value == INFINITY) return CONST_STRING(vm, "infinity");
-  if (value == -INFINITY) return CONST_STRING(vm, "-infinity");
+  switch (fpclassify(value))
+  {
+  case FP_INFINITE:
+    if (signbit(value))
+      return CONST_STRING(vm, "-infinity");
+    else
+      return CONST_STRING(vm, "infinity");
+  case FP_NAN:
+    return CONST_STRING(vm, "nan");
+  }
 
   // This is large enough to hold any double converted to a string using
   // "%.14g". Example:

test/api/slots.c

@@ -19,7 +19,7 @@ static void getSlots(WrenVM* vm)
   if (length != 5) result = false;
   if (memcmp(bytes, "by\0te", length) != 0) result = false;
 
-  if (wrenGetSlotDouble(vm, 3) != 12.34) result = false;
+  if (wrenGetSlotDouble(vm, 3) != 1.5) result = false;
   if (strcmp(wrenGetSlotString(vm, 4), "str") != 0) result = false;
   
   WrenHandle* handle = wrenGetSlotHandle(vm, 5);
@@ -28,13 +28,14 @@ static void getSlots(WrenVM* vm)
   {
     // Otherwise, return the value so we can tell if we captured it correctly.
     wrenSetSlotHandle(vm, 0, handle);
-    wrenReleaseHandle(vm, handle);
   }
   else
   {
     // If anything failed, return false.
     wrenSetSlotBool(vm, 0, false);
   }
+
+  wrenReleaseHandle(vm, handle);
 }
 
 static void setSlots(WrenVM* vm)
@@ -43,7 +44,7 @@ static void setSlots(WrenVM* vm)
   
   wrenSetSlotBool(vm, 1, true);
   wrenSetSlotBytes(vm, 2, "by\0te", 5);
-  wrenSetSlotDouble(vm, 3, 12.34);
+  wrenSetSlotDouble(vm, 3, 1.5);
   wrenSetSlotString(vm, 4, "str");
   
   // TODO: wrenSetSlotNull().
@@ -58,20 +59,21 @@ static void setSlots(WrenVM* vm)
   if (length != 5) result = false;
   if (memcmp(bytes, "by\0te", length) != 0) result = false;
 
-  if (wrenGetSlotDouble(vm, 3) != 12.34) result = false;
+  if (wrenGetSlotDouble(vm, 3) != 1.5) result = false;
   if (strcmp(wrenGetSlotString(vm, 4), "str") != 0) result = false;
 
   if (result)
   {
     // Move the value into the return position.
     wrenSetSlotHandle(vm, 0, handle);
-    wrenReleaseHandle(vm, handle);
   }
   else
   {
     // If anything failed, return false.
     wrenSetSlotBool(vm, 0, false);
   }
+
+  wrenReleaseHandle(vm, handle);
 }
 
 static void slotTypes(WrenVM* vm)

test/api/slots.wren

@@ -18,7 +18,7 @@ foreign class ForeignType {
 System.print(Slots.noSet == Slots) // expect: true
 
 var value = ["value"]
-System.print(Slots.getSlots(true, "by\0te", 12.34, "str", value) == value)
+System.print(Slots.getSlots(true, "by\0te", 1.5, "str", value) == value)
 // expect: true
 
 System.print(Slots.setSlots(value, 0, 0, 0) == value)

test/core/number/cos.wren

@@ -3,4 +3,4 @@ System.print(Num.pi.cos)        // expect: -1
 System.print((2 * Num.pi).cos)  // expect: 1
 
 // this should of course be 0, but it's not that precise
-System.print((Num.pi / 2).cos)  // expect: 6.1232339957368e-17
+System.print((Num.pi / 2).cos.abs < 1.0e-16) // expect: true

test/core/number/sin.wren

@@ -2,5 +2,5 @@ System.print(0.sin)             // expect: 0
 System.print((Num.pi / 2).sin)  // expect: 1
 
 // these should of course be 0, but it's not that precise
-System.print(Num.pi.sin)        // expect: 1.2246467991474e-16
-System.print((2 * Num.pi).sin)  // expect: -2.4492935982947e-16
+System.print(Num.pi.sin.abs < 1.0e-15)        // expect: true
+System.print((2 * Num.pi).sin.abs < 1.0e-15)  // expect: true

test/os/process/all_arguments.wren

@@ -5,7 +5,7 @@ System.print(args is List) // expect: true
 System.print(args.count)   // expect: 2
 
 // Includes wren executable and file being run.
-System.print(args[0].endsWith("wrend")) // expect: true
+System.print(args[0].contains("wren")) // expect: true
 System.print(args[1]) // expect: test/os/process/all_arguments.wren
 
 // TODO: Test passing additional args once we have an API to spawn a process.

util/libuv.py

@@ -11,7 +11,7 @@ import shutil
 import subprocess
 import sys
 
-LIB_UV_VERSION = "v1.8.0"
+LIB_UV_VERSION = "v1.10.0"
 LIB_UV_DIR = "deps/libuv"
 
 def python2_binary():

util/test.py

@@ -2,6 +2,7 @@
 
 from __future__ import print_function
 
+from argparse import ArgumentParser
 from collections import defaultdict
 from os import listdir
 from os.path import abspath, basename, dirname, isdir, isfile, join, realpath, relpath, splitext
@@ -10,10 +11,22 @@ from subprocess import Popen, PIPE
 import sys
 from threading import Timer
 
+parser = ArgumentParser()
+parser.add_argument('--suffix', default='d')
+parser.add_argument('suite', nargs='?')
+
+args = parser.parse_args(sys.argv[1:])
+
+config=args.suffix.lstrip('d')
+is_debug=args.suffix.startswith('d')
+config_dir=("debug" if is_debug else "release") + config
 # Runs the tests.
 WREN_DIR = dirname(dirname(realpath(__file__)))
-WREN_APP = join(WREN_DIR, 'bin', 'wrend')
-TEST_APP = join(WREN_DIR, 'build', 'debug', 'test', 'wrend')
+WREN_APP = join(WREN_DIR, 'bin', 'wren' + args.suffix)
+TEST_APP = join(WREN_DIR, 'build', config_dir, 'test', 'wren' + args.suffix)
+
+print("WREN_APP=" + WREN_APP)
+print("TEST_APP=" + TEST_APP)
 
 EXPECT_PATTERN = re.compile(r'// expect: ?(.*)')
 EXPECT_ERROR_PATTERN = re.compile(r'// expect error(?! line)')
@@ -114,7 +127,7 @@ class Test:
     test_arg = self.path
     proc = Popen([app, test_arg], stdin=PIPE, stdout=PIPE, stderr=PIPE)
 
-    # If a test takes longer than two seconds, kill it.
+    # If a test takes longer than five seconds, kill it.
     #
     # This is mainly useful for running the tests while stress testing the GC,
     # which can make a few pathological tests much slower.
@@ -123,7 +136,7 @@ class Test:
       timed_out[0] = True
       p.kill()
 
-    timer = Timer(2, kill_process, [proc])
+    timer = Timer(5, kill_process, [proc])
 
     try:
       timer.start()
@@ -313,9 +326,9 @@ def run_script(app, path, type):
     return
 
   # Check if we are just running a subset of the tests.
-  if len(sys.argv) == 2:
+  if args.suite:
     this_test = relpath(path, join(WREN_DIR, 'test'))
-    if not this_test.startswith(sys.argv[1]):
+    if not this_test.startswith(args.suite):
       return
 
   # Update the status line.

util/wren.mk

@@ -42,6 +42,7 @@ ifeq ($(VERBOSE),1)
 	V :=
 endif
 
+C_OPTIONS := $(WREN_CFLAGS)
 C_WARNINGS := -Wall -Wextra -Werror -Wno-unused-parameter
 # Wren uses callbacks heavily, so -Wunused-parameter is too painful to enable.