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a437390310
Add a diff driver for Scheme-like languages which recognizes top level and local `define` forms, whether it is a function definition, binding, syntax definition or a user-defined `define-xyzzy` form. Also supports R6RS `library` forms, `module` forms along with class and struct declarations used in Racket (PLT Scheme). Alternate "def" syntax such as those in Gerbil Scheme are also supported, like defstruct, defsyntax and so on. The rationale for picking `define` forms for the hunk headers is because it is usually the only significant form for defining the structure of the program, and it is a common pattern for schemers to have local function definitions to hide their visibility, so it is not only the top level `define`'s that are of interest. Schemers also extend the language with macros to provide their own define forms (for example, something like a `define-test-suite`) which is also captured in the hunk header. Since it is common practice to extend syntax with variants of a form like `module+`, `class*` etc, those have been supported as well. The word regex is a best-effort attempt to conform to R7RS[1] valid identifiers, symbols and numbers. [1] https://small.r7rs.org/attachment/r7rs.pdf (section 2.1) Signed-off-by: Atharva Raykar <raykar.ath@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
406 lines
8.9 KiB
Bash
Executable File
406 lines
8.9 KiB
Bash
Executable File
#!/bin/sh
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test_description='word diff colors'
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/lib-diff.sh
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cat >pre.simple <<-\EOF
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h(4)
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a = b + c
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EOF
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cat >post.simple <<-\EOF
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h(4),hh[44]
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a = b + c
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aa = a
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aeff = aeff * ( aaa )
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EOF
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pre=$(git rev-parse --short $(git hash-object pre.simple))
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post=$(git rev-parse --short $(git hash-object post.simple))
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cat >expect.letter-runs-are-words <<-EOF
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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h(4),<GREEN>hh<RESET>[44]
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a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa<RESET> )
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EOF
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cat >expect.non-whitespace-is-word <<-EOF
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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h(4)<GREEN>,hh[44]<RESET>
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a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa )<RESET>
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EOF
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word_diff () {
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pre=$(git rev-parse --short $(git hash-object pre)) &&
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post=$(git rev-parse --short $(git hash-object post)) &&
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test_must_fail git diff --no-index "$@" pre post >output &&
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test_decode_color <output >output.decrypted &&
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sed -e "2s/index [^ ]*/index $pre..$post/" expect >expected
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test_cmp expected output.decrypted
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}
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test_language_driver () {
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lang=$1
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test_expect_success "diff driver '$lang'" '
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cp "$TEST_DIRECTORY/t4034/'"$lang"'/pre" \
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"$TEST_DIRECTORY/t4034/'"$lang"'/post" \
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"$TEST_DIRECTORY/t4034/'"$lang"'/expect" . &&
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echo "* diff='"$lang"'" >.gitattributes &&
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word_diff --color-words
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'
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}
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test_expect_success setup '
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git config diff.color.old red &&
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git config diff.color.new green &&
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git config diff.color.func magenta
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'
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test_expect_success 'set up pre and post with runs of whitespace' '
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cp pre.simple pre &&
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cp post.simple post
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'
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test_expect_success 'word diff with runs of whitespace' '
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cat >expect <<-EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
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a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa )<RESET>
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EOF
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word_diff --color-words &&
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word_diff --word-diff=color &&
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word_diff --color --word-diff=color
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'
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test_expect_success '--word-diff=porcelain' '
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sed "s/#.*$//" >expect <<-EOF &&
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diff --git a/pre b/post
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index $pre..$post 100644
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--- a/pre
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+++ b/post
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@@ -1,3 +1,7 @@
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-h(4)
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+h(4),hh[44]
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~
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# significant space
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~
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a = b + c
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~
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~
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+aa = a
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~
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~
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+aeff = aeff * ( aaa )
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~
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EOF
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word_diff --word-diff=porcelain
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'
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test_expect_success '--word-diff=plain' '
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cat >expect <<-EOF &&
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diff --git a/pre b/post
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index $pre..$post 100644
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--- a/pre
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+++ b/post
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@@ -1,3 +1,7 @@
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[-h(4)-]{+h(4),hh[44]+}
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a = b + c
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{+aa = a+}
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{+aeff = aeff * ( aaa )+}
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EOF
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word_diff --word-diff=plain &&
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word_diff --word-diff=plain --no-color
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'
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test_expect_success '--word-diff=plain --color' '
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cat >expect <<-EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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<RED>[-h(4)-]<RESET><GREEN>{+h(4),hh[44]+}<RESET>
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a = b + c<RESET>
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<GREEN>{+aa = a+}<RESET>
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<GREEN>{+aeff = aeff * ( aaa )+}<RESET>
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EOF
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word_diff --word-diff=plain --color
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'
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test_expect_success 'word diff without context' '
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cat >expect <<-EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1 +1 @@<RESET>
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<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
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<CYAN>@@ -3,0 +4,4 @@<RESET> <RESET><MAGENTA>a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa )<RESET>
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EOF
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word_diff --color-words --unified=0
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'
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test_expect_success 'word diff with a regular expression' '
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cp expect.letter-runs-are-words expect &&
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word_diff --color-words="[a-z]+"
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'
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test_expect_success 'set up a diff driver' '
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git config diff.testdriver.wordRegex "[^[:space:]]" &&
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cat <<-\EOF >.gitattributes
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pre diff=testdriver
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post diff=testdriver
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EOF
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'
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test_expect_success 'option overrides .gitattributes' '
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cp expect.letter-runs-are-words expect &&
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word_diff --color-words="[a-z]+"
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'
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test_expect_success 'use regex supplied by driver' '
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cp expect.non-whitespace-is-word expect &&
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word_diff --color-words
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'
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test_expect_success 'set up diff.wordRegex option' '
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git config diff.wordRegex "[[:alnum:]]+"
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'
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test_expect_success 'command-line overrides config' '
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cp expect.letter-runs-are-words expect &&
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word_diff --color-words="[a-z]+"
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'
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test_expect_success 'command-line overrides config: --word-diff-regex' '
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cat >expect <<-EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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h(4),<GREEN>{+hh+}<RESET>[44]
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a = b + c<RESET>
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<GREEN>{+aa = a+}<RESET>
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<GREEN>{+aeff = aeff * ( aaa+}<RESET> )
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EOF
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word_diff --color --word-diff-regex="[a-z]+"
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'
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test_expect_success '.gitattributes override config' '
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cp expect.non-whitespace-is-word expect &&
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word_diff --color-words
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'
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test_expect_success 'setup: remove diff driver regex' '
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test_unconfig diff.testdriver.wordRegex
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'
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test_expect_success 'use configured regex' '
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cat >expect <<-EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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h(4),<GREEN>hh[44<RESET>]
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a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa<RESET> )
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EOF
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word_diff --color-words
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'
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test_expect_success 'test parsing words for newline' '
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echo "aaa (aaa)" >pre &&
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echo "aaa (aaa) aaa" >post &&
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pre=$(git rev-parse --short $(git hash-object pre)) &&
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post=$(git rev-parse --short $(git hash-object post)) &&
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cat >expect <<-EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1 +1 @@<RESET>
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aaa (aaa) <GREEN>aaa<RESET>
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EOF
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word_diff --color-words="a+"
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'
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test_expect_success 'test when words are only removed at the end' '
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echo "(:" >pre &&
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echo "(" >post &&
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pre=$(git rev-parse --short $(git hash-object pre)) &&
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post=$(git rev-parse --short $(git hash-object post)) &&
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cat >expect <<-EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index $pre..$post 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1 +1 @@<RESET>
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(<RED>:<RESET>
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EOF
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word_diff --color-words=.
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'
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test_expect_success '--word-diff=none' '
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echo "(:" >pre &&
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echo "(" >post &&
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pre=$(git rev-parse --short $(git hash-object pre)) &&
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post=$(git rev-parse --short $(git hash-object post)) &&
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cat >expect <<-EOF &&
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diff --git a/pre b/post
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index $pre..$post 100644
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--- a/pre
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+++ b/post
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@@ -1 +1 @@
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-(:
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+(
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EOF
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word_diff --word-diff=plain --word-diff=none
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'
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test_expect_success 'unset default driver' '
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test_unconfig diff.wordregex
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'
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test_language_driver ada
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test_language_driver bibtex
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test_language_driver cpp
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test_language_driver csharp
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test_language_driver css
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test_language_driver dts
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test_language_driver fortran
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test_language_driver html
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test_language_driver java
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test_language_driver matlab
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test_language_driver objc
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test_language_driver pascal
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test_language_driver perl
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test_language_driver php
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test_language_driver python
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test_language_driver ruby
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test_language_driver scheme
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test_language_driver tex
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test_expect_success 'word-diff with diff.sbe' '
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cat >pre <<-\EOF &&
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a
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b
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EOF
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cat >post <<-\EOF &&
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a
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c
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EOF
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pre=$(git rev-parse --short $(git hash-object pre)) &&
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post=$(git rev-parse --short $(git hash-object post)) &&
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cat >expect <<-EOF &&
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diff --git a/pre b/post
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index $pre..$post 100644
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--- a/pre
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+++ b/post
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@@ -1,3 +1,3 @@
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a
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[-b-]{+c+}
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EOF
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test_config diff.suppress-blank-empty true &&
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word_diff --word-diff=plain
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'
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test_expect_success 'word-diff with no newline at EOF' '
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printf "%s" "a a a a a" >pre &&
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printf "%s" "a a ab a a" >post &&
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pre=$(git rev-parse --short $(git hash-object pre)) &&
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post=$(git rev-parse --short $(git hash-object post)) &&
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cat >expect <<-EOF &&
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diff --git a/pre b/post
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index $pre..$post 100644
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--- a/pre
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+++ b/post
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@@ -1 +1 @@
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a a [-a-]{+ab+} a a
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EOF
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word_diff --word-diff=plain
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'
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test_expect_success 'setup history with two files' '
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echo "a b; c" >a.tex &&
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echo "a b; c" >z.txt &&
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git add a.tex z.txt &&
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git commit -minitial &&
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# modify both
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echo "a bx; c" >a.tex &&
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echo "a bx; c" >z.txt &&
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git commit -mmodified -a
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'
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test_expect_success 'wordRegex for the first file does not apply to the second' '
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echo "*.tex diff=tex" >.gitattributes &&
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test_config diff.tex.wordRegex "[a-z]+|." &&
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cat >expect <<-\EOF &&
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diff --git a/a.tex b/a.tex
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--- a/a.tex
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+++ b/a.tex
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@@ -1 +1 @@
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a [-b-]{+bx+}; c
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diff --git a/z.txt b/z.txt
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--- a/z.txt
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+++ b/z.txt
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@@ -1 +1 @@
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a [-b;-]{+bx;+} c
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EOF
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git diff --word-diff HEAD~ >actual &&
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compare_diff_patch expect actual
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'
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test_done
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