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-rw-r--r--Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/hint_test.go673
1 files changed, 0 insertions, 673 deletions
diff --git a/Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/hint_test.go b/Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/hint_test.go
deleted file mode 100644
index c8b8d604d..000000000
--- a/Godeps/_workspace/src/code.google.com/p/freetype-go/freetype/truetype/hint_test.go
+++ /dev/null
@@ -1,673 +0,0 @@
-// Copyright 2012 The Freetype-Go Authors. All rights reserved.
-// Use of this source code is governed by your choice of either the
-// FreeType License or the GNU General Public License version 2 (or
-// any later version), both of which can be found in the LICENSE file.
-
-package truetype
-
-import (
- "reflect"
- "strings"
- "testing"
-)
-
-func TestBytecode(t *testing.T) {
- testCases := []struct {
- desc string
- prog []byte
- want []int32
- errStr string
- }{
- {
- "underflow",
- []byte{
- opDUP,
- },
- nil,
- "underflow",
- },
- {
- "infinite loop",
- []byte{
- opPUSHW000, // [-1]
- 0xff,
- 0xff,
- opDUP, // [-1, -1]
- opJMPR, // [-1]
- },
- nil,
- "too many steps",
- },
- {
- "unbalanced if/else",
- []byte{
- opPUSHB000, // [0]
- 0,
- opIF,
- },
- nil,
- "unbalanced",
- },
- {
- "vector set/gets",
- []byte{
- opSVTCA1, // []
- opGPV, // [0x4000, 0]
- opSVTCA0, // [0x4000, 0]
- opGFV, // [0x4000, 0, 0, 0x4000]
- opNEG, // [0x4000, 0, 0, -0x4000]
- opSPVFS, // [0x4000, 0]
- opSFVTPV, // [0x4000, 0]
- opPUSHB000, // [0x4000, 0, 1]
- 1,
- opGFV, // [0x4000, 0, 1, 0, -0x4000]
- opPUSHB000, // [0x4000, 0, 1, 0, -0x4000, 2]
- 2,
- },
- []int32{0x4000, 0, 1, 0, -0x4000, 2},
- "",
- },
- {
- "jumps",
- []byte{
- opPUSHB001, // [10, 2]
- 10,
- 2,
- opJMPR, // [10]
- opDUP, // not executed
- opDUP, // [10, 10]
- opPUSHB010, // [10, 10, 20, 2, 1]
- 20,
- 2,
- 1,
- opJROT, // [10, 10, 20]
- opDUP, // not executed
- opDUP, // [10, 10, 20, 20]
- opPUSHB010, // [10, 10, 20, 20, 30, 2, 1]
- 30,
- 2,
- 1,
- opJROF, // [10, 10, 20, 20, 30]
- opDUP, // [10, 10, 20, 20, 30, 30]
- opDUP, // [10, 10, 20, 20, 30, 30, 30]
- },
- []int32{10, 10, 20, 20, 30, 30, 30},
- "",
- },
- {
- "stack ops",
- []byte{
- opPUSHB010, // [10, 20, 30]
- 10,
- 20,
- 30,
- opCLEAR, // []
- opPUSHB010, // [40, 50, 60]
- 40,
- 50,
- 60,
- opSWAP, // [40, 60, 50]
- opDUP, // [40, 60, 50, 50]
- opDUP, // [40, 60, 50, 50, 50]
- opPOP, // [40, 60, 50, 50]
- opDEPTH, // [40, 60, 50, 50, 4]
- opCINDEX, // [40, 60, 50, 50, 40]
- opPUSHB000, // [40, 60, 50, 50, 40, 4]
- 4,
- opMINDEX, // [40, 50, 50, 40, 60]
- },
- []int32{40, 50, 50, 40, 60},
- "",
- },
- {
- "push ops",
- []byte{
- opPUSHB000, // [255]
- 255,
- opPUSHW001, // [255, -2, 253]
- 255,
- 254,
- 0,
- 253,
- opNPUSHB, // [1, -2, 253, 1, 2]
- 2,
- 1,
- 2,
- opNPUSHW, // [1, -2, 253, 1, 2, 0x0405, 0x0607, 0x0809]
- 3,
- 4,
- 5,
- 6,
- 7,
- 8,
- 9,
- },
- []int32{255, -2, 253, 1, 2, 0x0405, 0x0607, 0x0809},
- "",
- },
- {
- "store ops",
- []byte{
- opPUSHB011, // [1, 22, 3, 44]
- 1,
- 22,
- 3,
- 44,
- opWS, // [1, 22]
- opWS, // []
- opPUSHB000, // [3]
- 3,
- opRS, // [44]
- },
- []int32{44},
- "",
- },
- {
- "comparison ops",
- []byte{
- opPUSHB001, // [10, 20]
- 10,
- 20,
- opLT, // [1]
- opPUSHB001, // [1, 10, 20]
- 10,
- 20,
- opLTEQ, // [1, 1]
- opPUSHB001, // [1, 1, 10, 20]
- 10,
- 20,
- opGT, // [1, 1, 0]
- opPUSHB001, // [1, 1, 0, 10, 20]
- 10,
- 20,
- opGTEQ, // [1, 1, 0, 0]
- opEQ, // [1, 1, 1]
- opNEQ, // [1, 0]
- },
- []int32{1, 0},
- "",
- },
- {
- "odd/even",
- // Calculate odd(2+31/64), odd(2+32/64), even(2), even(1).
- []byte{
- opPUSHB000, // [159]
- 159,
- opODD, // [0]
- opPUSHB000, // [0, 160]
- 160,
- opODD, // [0, 1]
- opPUSHB000, // [0, 1, 128]
- 128,
- opEVEN, // [0, 1, 1]
- opPUSHB000, // [0, 1, 1, 64]
- 64,
- opEVEN, // [0, 1, 1, 0]
- },
- []int32{0, 1, 1, 0},
- "",
- },
- {
- "if true",
- []byte{
- opPUSHB001, // [255, 1]
- 255,
- 1,
- opIF,
- opPUSHB000, // [255, 2]
- 2,
- opEIF,
- opPUSHB000, // [255, 2, 254]
- 254,
- },
- []int32{255, 2, 254},
- "",
- },
- {
- "if false",
- []byte{
- opPUSHB001, // [255, 0]
- 255,
- 0,
- opIF,
- opPUSHB000, // [255]
- 2,
- opEIF,
- opPUSHB000, // [255, 254]
- 254,
- },
- []int32{255, 254},
- "",
- },
- {
- "if/else true",
- []byte{
- opPUSHB000, // [1]
- 1,
- opIF,
- opPUSHB000, // [2]
- 2,
- opELSE,
- opPUSHB000, // not executed
- 3,
- opEIF,
- },
- []int32{2},
- "",
- },
- {
- "if/else false",
- []byte{
- opPUSHB000, // [0]
- 0,
- opIF,
- opPUSHB000, // not executed
- 2,
- opELSE,
- opPUSHB000, // [3]
- 3,
- opEIF,
- },
- []int32{3},
- "",
- },
- {
- "if/else true if/else false",
- // 0x58 is the opcode for opIF. The literal 0x58s below are pushed data.
- []byte{
- opPUSHB010, // [255, 0, 1]
- 255,
- 0,
- 1,
- opIF,
- opIF,
- opPUSHB001, // not executed
- 0x58,
- 0x58,
- opELSE,
- opPUSHW000, // [255, 0x5858]
- 0x58,
- 0x58,
- opEIF,
- opELSE,
- opIF,
- opNPUSHB, // not executed
- 3,
- 0x58,
- 0x58,
- 0x58,
- opELSE,
- opNPUSHW, // not executed
- 2,
- 0x58,
- 0x58,
- 0x58,
- 0x58,
- opEIF,
- opEIF,
- opPUSHB000, // [255, 0x5858, 254]
- 254,
- },
- []int32{255, 0x5858, 254},
- "",
- },
- {
- "if/else false if/else true",
- // 0x58 is the opcode for opIF. The literal 0x58s below are pushed data.
- []byte{
- opPUSHB010, // [255, 1, 0]
- 255,
- 1,
- 0,
- opIF,
- opIF,
- opPUSHB001, // not executed
- 0x58,
- 0x58,
- opELSE,
- opPUSHW000, // not executed
- 0x58,
- 0x58,
- opEIF,
- opELSE,
- opIF,
- opNPUSHB, // [255, 0x58, 0x58, 0x58]
- 3,
- 0x58,
- 0x58,
- 0x58,
- opELSE,
- opNPUSHW, // not executed
- 2,
- 0x58,
- 0x58,
- 0x58,
- 0x58,
- opEIF,
- opEIF,
- opPUSHB000, // [255, 0x58, 0x58, 0x58, 254]
- 254,
- },
- []int32{255, 0x58, 0x58, 0x58, 254},
- "",
- },
- {
- "logical ops",
- []byte{
- opPUSHB010, // [0, 10, 20]
- 0,
- 10,
- 20,
- opAND, // [0, 1]
- opOR, // [1]
- opNOT, // [0]
- },
- []int32{0},
- "",
- },
- {
- "arithmetic ops",
- // Calculate abs((-(1 - (2*3)))/2 + 1/64).
- // The answer is 5/2 + 1/64 in ideal numbers, or 161 in 26.6 fixed point math.
- []byte{
- opPUSHB010, // [64, 128, 192]
- 1 << 6,
- 2 << 6,
- 3 << 6,
- opMUL, // [64, 384]
- opSUB, // [-320]
- opNEG, // [320]
- opPUSHB000, // [320, 128]
- 2 << 6,
- opDIV, // [160]
- opPUSHB000, // [160, 1]
- 1,
- opADD, // [161]
- opABS, // [161]
- },
- []int32{161},
- "",
- },
- {
- "floor, ceiling",
- []byte{
- opPUSHB000, // [96]
- 96,
- opFLOOR, // [64]
- opPUSHB000, // [64, 96]
- 96,
- opCEILING, // [64, 128]
- },
- []int32{64, 128},
- "",
- },
- {
- "rounding",
- // Round 1.40625 (which is 90/64) under various rounding policies.
- // See figure 20 of https://developer.apple.com/fonts/TTRefMan/RM02/Chap2.html#rounding
- []byte{
- opROFF, // []
- opPUSHB000, // [90]
- 90,
- opROUND00, // [90]
- opRTG, // [90]
- opPUSHB000, // [90, 90]
- 90,
- opROUND00, // [90, 64]
- opRTHG, // [90, 64]
- opPUSHB000, // [90, 64, 90]
- 90,
- opROUND00, // [90, 64, 96]
- opRDTG, // [90, 64, 96]
- opPUSHB000, // [90, 64, 96, 90]
- 90,
- opROUND00, // [90, 64, 96, 64]
- opRUTG, // [90, 64, 96, 64]
- opPUSHB000, // [90, 64, 96, 64, 90]
- 90,
- opROUND00, // [90, 64, 96, 64, 128]
- opRTDG, // [90, 64, 96, 64, 128]
- opPUSHB000, // [90, 64, 96, 64, 128, 90]
- 90,
- opROUND00, // [90, 64, 96, 64, 128, 96]
- },
- []int32{90, 64, 96, 64, 128, 96},
- "",
- },
- {
- "super-rounding",
- // See figure 20 of https://developer.apple.com/fonts/TTRefMan/RM02/Chap2.html#rounding
- // and the sign preservation steps of the "Order of rounding operations" section.
- []byte{
- opPUSHB000, // [0x58]
- 0x58,
- opSROUND, // []
- opPUSHW000, // [-81]
- 0xff,
- 0xaf,
- opROUND00, // [-80]
- opPUSHW000, // [-80, -80]
- 0xff,
- 0xb0,
- opROUND00, // [-80, -80]
- opPUSHW000, // [-80, -80, -17]
- 0xff,
- 0xef,
- opROUND00, // [-80, -80, -16]
- opPUSHW000, // [-80, -80, -16, -16]
- 0xff,
- 0xf0,
- opROUND00, // [-80, -80, -16, -16]
- opPUSHB000, // [-80, -80, -16, -16, 0]
- 0,
- opROUND00, // [-80, -80, -16, -16, 16]
- opPUSHB000, // [-80, -80, -16, -16, 16, 16]
- 16,
- opROUND00, // [-80, -80, -16, -16, 16, 16]
- opPUSHB000, // [-80, -80, -16, -16, 16, 16, 47]
- 47,
- opROUND00, // [-80, -80, -16, -16, 16, 16, 16]
- opPUSHB000, // [-80, -80, -16, -16, 16, 16, 16, 48]
- 48,
- opROUND00, // [-80, -80, -16, -16, 16, 16, 16, 80]
- },
- []int32{-80, -80, -16, -16, 16, 16, 16, 80},
- "",
- },
- {
- "roll",
- []byte{
- opPUSHB010, // [1, 2, 3]
- 1,
- 2,
- 3,
- opROLL, // [2, 3, 1]
- },
- []int32{2, 3, 1},
- "",
- },
- {
- "max/min",
- []byte{
- opPUSHW001, // [-2, -3]
- 0xff,
- 0xfe,
- 0xff,
- 0xfd,
- opMAX, // [-2]
- opPUSHW001, // [-2, -4, -5]
- 0xff,
- 0xfc,
- 0xff,
- 0xfb,
- opMIN, // [-2, -5]
- },
- []int32{-2, -5},
- "",
- },
- {
- "functions",
- []byte{
- opPUSHB011, // [3, 7, 0, 3]
- 3,
- 7,
- 0,
- 3,
-
- opFDEF, // Function #3 (not called)
- opPUSHB000,
- 98,
- opENDF,
-
- opFDEF, // Function #0
- opDUP,
- opADD,
- opENDF,
-
- opFDEF, // Function #7
- opPUSHB001,
- 10,
- 0,
- opCALL,
- opDUP,
- opENDF,
-
- opFDEF, // Function #3 (again)
- opPUSHB000,
- 99,
- opENDF,
-
- opPUSHB001, // [2, 0]
- 2,
- 0,
- opCALL, // [4]
- opPUSHB000, // [4, 3]
- 3,
- opLOOPCALL, // [99, 99, 99, 99]
- opPUSHB000, // [99, 99, 99, 99, 7]
- 7,
- opCALL, // [99, 99, 99, 99, 20, 20]
- },
- []int32{99, 99, 99, 99, 20, 20},
- "",
- },
- }
-
- for _, tc := range testCases {
- h := &hinter{}
- h.init(&Font{
- maxStorage: 32,
- maxStackElements: 100,
- }, 768)
- err, errStr := h.run(tc.prog, nil, nil, nil, nil), ""
- if err != nil {
- errStr = err.Error()
- }
- if tc.errStr != "" {
- if errStr == "" {
- t.Errorf("%s: got no error, want %q", tc.desc, tc.errStr)
- } else if !strings.Contains(errStr, tc.errStr) {
- t.Errorf("%s: got error %q, want one containing %q", tc.desc, errStr, tc.errStr)
- }
- continue
- }
- if errStr != "" {
- t.Errorf("%s: got error %q, want none", tc.desc, errStr)
- continue
- }
- got := h.stack[:len(tc.want)]
- if !reflect.DeepEqual(got, tc.want) {
- t.Errorf("%s: got %v, want %v", tc.desc, got, tc.want)
- continue
- }
- }
-}
-
-// TestMove tests that the hinter.move method matches the output of the C
-// Freetype implementation.
-func TestMove(t *testing.T) {
- h, p := hinter{}, Point{}
- testCases := []struct {
- pvX, pvY, fvX, fvY f2dot14
- wantX, wantY int32
- }{
- {+0x4000, +0x0000, +0x4000, +0x0000, +1000, +0},
- {+0x4000, +0x0000, -0x4000, +0x0000, +1000, +0},
- {-0x4000, +0x0000, +0x4000, +0x0000, -1000, +0},
- {-0x4000, +0x0000, -0x4000, +0x0000, -1000, +0},
- {+0x0000, +0x4000, +0x0000, +0x4000, +0, +1000},
- {+0x0000, +0x4000, +0x0000, -0x4000, +0, +1000},
- {+0x4000, +0x0000, +0x2d41, +0x2d41, +1000, +1000},
- {+0x4000, +0x0000, -0x2d41, +0x2d41, +1000, -1000},
- {+0x4000, +0x0000, +0x2d41, -0x2d41, +1000, -1000},
- {+0x4000, +0x0000, -0x2d41, -0x2d41, +1000, +1000},
- {-0x4000, +0x0000, +0x2d41, +0x2d41, -1000, -1000},
- {-0x4000, +0x0000, -0x2d41, +0x2d41, -1000, +1000},
- {-0x4000, +0x0000, +0x2d41, -0x2d41, -1000, +1000},
- {-0x4000, +0x0000, -0x2d41, -0x2d41, -1000, -1000},
- {+0x376d, +0x2000, +0x2d41, +0x2d41, +732, +732},
- {-0x376d, +0x2000, +0x2d41, +0x2d41, -2732, -2732},
- {+0x376d, +0x2000, +0x2d41, -0x2d41, +2732, -2732},
- {-0x376d, +0x2000, +0x2d41, -0x2d41, -732, +732},
- {-0x376d, -0x2000, +0x2d41, +0x2d41, -732, -732},
- {+0x376d, +0x2000, +0x4000, +0x0000, +1155, +0},
- {+0x376d, +0x2000, +0x0000, +0x4000, +0, +2000},
- }
- for _, tc := range testCases {
- p = Point{}
- h.gs.pv = [2]f2dot14{tc.pvX, tc.pvY}
- h.gs.fv = [2]f2dot14{tc.fvX, tc.fvY}
- h.move(&p, 1000, true)
- tx := p.Flags&flagTouchedX != 0
- ty := p.Flags&flagTouchedY != 0
- wantTX := tc.fvX != 0
- wantTY := tc.fvY != 0
- if p.X != tc.wantX || p.Y != tc.wantY || tx != wantTX || ty != wantTY {
- t.Errorf("pv=%v, fv=%v\ngot %d, %d, %t, %t\nwant %d, %d, %t, %t",
- h.gs.pv, h.gs.fv, p.X, p.Y, tx, ty, tc.wantX, tc.wantY, wantTX, wantTY)
- continue
- }
-
- // Check that p is aligned with the freedom vector.
- a := int64(p.X) * int64(tc.fvY)
- b := int64(p.Y) * int64(tc.fvX)
- if a != b {
- t.Errorf("pv=%v, fv=%v, p=%v not aligned with fv", h.gs.pv, h.gs.fv, p)
- continue
- }
-
- // Check that the projected p is 1000 away from the origin.
- dotProd := (int64(p.X)*int64(tc.pvX) + int64(p.Y)*int64(tc.pvY) + 1<<13) >> 14
- if dotProd != 1000 {
- t.Errorf("pv=%v, fv=%v, p=%v not 1000 from origin", h.gs.pv, h.gs.fv, p)
- continue
- }
- }
-}
-
-// TestNormalize tests that the normalize function matches the output of the C
-// Freetype implementation.
-func TestNormalize(t *testing.T) {
- testCases := [][2]f2dot14{
- {-15895, 3974},
- {-15543, 5181},
- {-14654, 7327},
- {-11585, 11585},
- {0, 16384},
- {11585, 11585},
- {14654, 7327},
- {15543, 5181},
- {15895, 3974},
- {16066, 3213},
- {16161, 2694},
- {16219, 2317},
- {16257, 2032},
- {16284, 1809},
- }
- for i, want := range testCases {
- got := normalize(f2dot14(i)-4, 1)
- if got != want {
- t.Errorf("i=%d: got %v, want %v", i, got, want)
- }
- }
-}
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